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BID - 7225 LP TRANSFORMERS 75KVA & 300KVA
r Financial Services City 0 Purchasing Division 1} Fort Fort N. Mason Floor PO Box 580 Collins Fort Collins, CO 052522 8 970.221.6775 970.221.6707 Purchasing rcgov. com1purchasng INVITATION TO BID 7225 LP Transformers 75kVA & 300kVA BID OPENING: 3:00 P.M. (our clock), April 12, 2011 Sealed bids will be received and publicly opened at the office of the Director of Purchasing and Risk Management, PO Box 580, 215 North Mason St., 2nd floor, Fort Collins, Colorado 80522, at the time and date noted on the bid proposal and/or contract documents. If delivered, they are to be sent to 215 North Mason Street, 2nd Floor, Fort Collins, Colorado 80524. If mailed, the address is P.O. Box 580, Fort Collins, 80522-0580. Bids must be received at the Purchasing Office prior to 3:00 p.m. (our clock), April 12, 2010. Questions regarding bid submittal or process should be directed to Opal Dick, CPPO, Senior Buyer at (970) 221-6778. Special Instructions All bids must be properly signed by an authorized representative of the company with the legal capacity to bind the company to the agreement. Bids may be withdrawn up to the date and hour set for closing. Once bids have been accepted by the City and closing has occurred, failure to enter into contract or honor the purchase order will be cause for removal of supplier's name from the City of Fort Collins' bidders list for a period of twelve months from the date of the opening. The City may also pursue any remedies available at law or in equity. Bid prices must be held firm for a period of forty-five (45) days after bid openings. Submission of a bid is deemed as acceptance of all terms, conditions and specifications contained in the City's specifications initially provided to the bidder. Any proposed modification must be accepted in writing by the City prior to award of the bid. Only bids properly received by the Purchasing Office will be accepted. All bids should be clearly identified by the bid number and bid name contained in the bid proposal. No proposal will be accepted from, or any purchase order awarded, to any person, firm or corporation in default on any obligation to the City. Bids must be furnished exclusive of any federal excise tax, wherever applicable. Bidders must be properly licensed and secure necessary permits wherever applicable. Bidders not responding to this bid will be removed from our automated vendor listing for the subject commodities. The City may elect where applicable, to award bids on an individual item/group basis or on a total bid basis, whichever is most beneficial to the City. The City reserves the right to accept or reject any and all bids, and to waive any irregularities or informalities. REV.SYM: MM REVISION DESCRIPTIONS REVISION DESCRIPTION Previous on file APPROVED REVISION FF: Tim Sagen • Add Paragraph 5.2.2.9.3: pentahead locking bolts Susan Coram • Paragraph 3.2.2.13.1: add glossy requirement. 10-18-95 REVISION GG: Susan Coram • Title page: Remove revised date Tim Sagan • Paragraph 4.4 and Table 2A: Change Temperature Tests and Noise Test from every 9-22-95 unit to one unit of design. REVISION HH: Opal Dick • GE removed from Appendix B Tim Sagen 12-13-96 REVISION II: • Add paragraph 3.2.2.10 OVERCURRENT PROTECTION and renumber remaining paragraphs in section 3.2 Opal Dick • Revise Fig. 1 to reflect a "V" configuration for the primary bushing arrangement vs. an Tim Sagan in -line arrangement. 6/3/99 • Revise Fig. 17 to remove requirement for CT mounting studs and increase dimensions A from 5" and 5.5" to 6" on 225-2500 kVA sizes REVISION JJ Bill Bray • Reformat and converted to MS Word, delete List of Active Pages Tim Sagan 9 /14 / 2000 REVISION KK Kraig Bader • Added drawing 1a to describe cable accessory parking stand detail, revise to reflect Tim Sagan current editions of national standards, change impedance on 368' 300-009 from 9 / 11 / 2001 1.7% to 1.9%. REVISION LL Kraig Bader • Change fusing from oil -immersed current sensing weak link cartridge to a current 4/2/2004 sensing bay-o-net fuse link in series with an ELSP current limiting backup fuse (clause 3.2.2.10). • Change column header for impedance table in 3.2.2.1 to clarify that impedance numbers are nominal values. (Tolerances are consistent with ANSI C.57.12.00- 2000) • Changed wording from "Mr. Ouch" in 3.2.2.15 to "warning label" Revision MM Kraig Bader • Change clause 3.2.2.10 to specify current sensing bay-o-net fuse link by size and 2/2/2005 part number. Table 2 was added for this purpose. • Renamed table in 3.3.2.1 to from Table 2 to Table 3 • Renamed table in 4.3. from Table 2A to Table 4 3 368-300 REV. SYM: MM TABLE OF CONTENTS ITEMS COVERED BY THIS SPECIFICATION................................................................................................................................2 REVISIONDESCRIPTIONS......_.........................................................................................................................................................3 1. SCOPE..................................................................................................................................................................................................5 2. APPLICABLE DOCUMENTS....................................................................._.................................................................................._5 3. REQUIREMENTS ........................................... ........................................................... _....................................................................... 5 3.1 GENERAL REQUIREMENTS FOR DESIGN................................................................................................................................5 3.2 SPECIFIC REQUIREMENTS FOR DESIGN OF LOOP -FEED UNITS........................................................................................7 3.3 SPECIFIC REQUIREMENTS FOR DESIGN OF RADIAL -FEED UNITS................................................................................. 16 4. QUALITY ASSURANCE.................................................................................................................................................................16 4.1 GENERAL..................................................................................................................................................................................... 16 4.2 TEST CONDITIONS.....................................................................................................................................................................16 4.3 FUNCTIONAL TESTS..................................................................................................................................................................17 4.4 TEST METHODS -- FUNCTIONAL TESTS................................................................................................................................17 5. PREPARATION FOR DELIVERY.................................................................................................................................................17 6. DEFINITIONS AND ABBREVIATIONS.......................................................................................................................................18 APPENDIXA ..................... ................................................................................................................................................................... 19 APPENDIXB.................... _............................................. ».................................................................................................................... 23 APPENDIXC.........................................................................................................................................................................................24 TRANSFORMER LOSS EVALUATION -AVERAGE LOSSES................................................................................................25 INDIVIDUAL TRANSFORMER LOSS EVALUATION..............................................................................................................26 4 368-300 SPECIFICATION FOR PAD -MOUNTED COMPARTMENTAL -TYPE, THREE-PHASE DISTRIBUTION TRANSFORMERS WITH SEPARABLE INSULATED LOAD BREAK HIGH -VOLTAGE CONNECTORS 1. SCOPE REV. SYM: MM This Specification establishes the minimum electrical requirements and mechanical features of three phase, 60 HZ. mineral oil immersed, self -cooled, pad -mounted, compartmental -type distribution transformers rated 2500 kVA and smaller, high voltage 13,200 Grd Y17620 volts, with separable insulated load break high voltage connectors. These transformers are used for step down purposes from an underground primary cable supply. This standard generally conforms to ANSI requirements for pad -mounted compartmental -type, self -cooled, three-phase distribution transformers for use with separable insulated high -voltage connectors, C57.12.26. 2. APPLICABLE DOCUMENTS The following documents form a part of this Specification to the extent specified herein. The latest issue in effect on the date of invitafion for bids shall form a part of this Specification, unless otherwise noted. • ANSI C57.12.00 - Distribution, power, and regulating transformers, and shunt reactors, general requirements for • ANSI C57.12.26 - Pad mounted, compartmental -type, self -cooled three phase, distribution transformers for use with separable insulated high voltage connectors, high voltage 34,500 Grd Y/19,920 volts and below, 2500 kVA and smaller, requirements for • ANSI C57.12.70 - Terminal markings and connections for distribution and power transformers • ANSI C57.12.80 - Terminology for power and distribution transformers • ANSI C57.12.90 - Distribution, power, and regulating transformers, and shunt reactors, test code for • ANSI/IEEE 386 - Separable insulated connectors for power distribution systems above 600V • NEMA STANDARD TR1 -Transformers, regulators and reactors 3. REQUIREMENTS 3.1 GENERAL REQUIREMENTS FOR DESIGN 3.1.1 BASIC DESIGN STANDARDS Transformers purchased under these Specifications shall be new and, unless otherwise specified, meet the requirements of the applicable ANSI Standards and the modifications and additions given in the subsequent paragraphs. In case of conflict, the requirements of the following documents shall apply in the priority shown: a) This Specification. b) ANSI C57.12.26 c) Other applicable ANSI and NEMA Standards. 3.1.2 KILOVOLT -AMPERE TEMPERATURE RATINGS Kilovolt -ampere ratings are continuous and are based on not exceeding either a 650C average winding temperature or an 800C hot spot temperature rise. The temperature rise of the insulating oil shall not exceed 65°C when measured near the top of the tank. The temperature rise is based on an altitude of 3,300 feet. 3.1.3 GENERAL CONSTRUCTION 3.1.3.1 The pad -mounted compartmental -type transformers shall consist of the transformer tank, high -voltage cable terminating compartment, and the low -voltage cab](. -terminating compartment. All three of these components shall be assembled as an integral unit, tamperproof and weatherproof for mounting on a pad. There shall be no exposed screws, bolts or other fastening devices, which are externally removable, except the main cover bolts may be exposed. Where the main cover bolts are exposed, the 368.300 REV. SYM: MM corner bolts shall be welded or otherwise rendered tamperproof. There shall be no opening through which foreign objects such as sticks, rods, or wires might be inserted to contact live parts. Suitable means for padlocking the compartment door(s) shall be provided. 3.1.3.2 The high and low -voltage compartment shall be located side by side on one side of the transformer tank. When facing the compartment, the low -voltage compartment shall be on the right. 3.1.3.3 Construction of the unit shall be such that it can be lifted, skidded, and slid into place on the mounting pad without disturbing the entrance cables. 3.1.3.4 An undercoating over the regular finish or an equivalent treatment shall be applied to all surfaces that are in contact with the pad to minimize corrosion. 3.1.3.5 Minimum dimensions shall be as shown in Fig. 1 of this Specification. Maximum transformer and minimum pad dimensions are shown in Fig. 6 of this Specification. 3.1.4 LOSSES The total losses of a transformer shall be the sum of the excitation losses and the load losses (I2R losses). Load loss tests shall be performed and reported on all units regardless of whether or not a record of such tests is available on duplicate units. Loss evaluations and loss costs will be based on the values shown in the "Special Conditions and Supplemental Instructions to Bidders." Transformers will be evaluated on excitation losses and 12R losses at the specified rates. If tested losses exceed quoted losses but are within the tolerances of paragraph 9.3, ANSI C57.12.00-2000, the additional cost incurred from the differential of losses will be calculated using the following equation and the above specified rates and will be deducted from the original Purchase Order or back charged to the manufacturer. In Table 18 and the following equation "Units" shall mean "Transformers of the same size and design on one order." Excess loss $ _ [No. of units] [(No Load Loss Evaluation $) (Avg. No Load Losses — Quoted No Load Losses) + (Load Loss Evaluation $) (Avg. Load Losses — Quoted Load Losses)]. If this equation results in a negative number no credit will be given the Supplier. If any unit or units exceed the tolerances of paragraph 9.3, ANSI C57.12.00-2000, that unit or units shall not be shipped without express permission from the City. If accepted, the deduction for excess losses will be based on the following equation: Excess loss $ _ (No Load Loss Evaluation $) (No Load Losses — Quoted No Load Losses) But Not Less Than Zero + (Load Loss Evaluation $) (Load Losses — Quoted Losses) But Not Less Than Zero. 3.1.5 SERVICE CONDITIONS Service conditions shall be as defined in paragraph 4.1 of ANSI C57.12.00 except the ambient temperature range shall be 40"C above to 320C below zero. The transformer shall operate safely with starting temperatures as low as 32°C below zero. 6 368-300 REV. SYM: MN 3.2 SPECIFIC REQUIREMENTS FOR DESIGN OF LOOP -FEED Units 3.2.1 FUNCTIONAL DESCRIPTION The transformer shall be a three phase, pad mounted, loop feed -safe break, "deadfront" type for use on a 13.8 kV grounded "Y" distribution system. 3.2.2 DESIGN AND CONSTRUCTION 3.2.2.1 RATINGS Table 1 - Loon -Feed Transformer Ratinas Stock No. kVA Low Voltage Nominal Impedance BushingT e/Confi . High Voltage Low Voltage 368-300- 008 75 208Y/120 1.9% T 3® 368-300- 009 75 480Y/277 1.7%O TO 368-300- 016 150 208Y/120 2.1 % T T @ 368-300- 016 150 480Y/277 2.1%T T® 368-300- 030 300 208Y/120 2.5% TO T® 368-300- 031 300 480Y/277 2.5% (D T oT 368-300- 060 500 208Y/120 3.04% 10 TOO 368-300- 051 500 480Y/277 3.04% D T® 368-300- 075 750 208Y/120 5.75% i0 Os 368-300- 076 750 480Y/277 5.75% TI 368-300- 100 1000 208Y/120 5.75% T T 368-300- 101 1000 480Y/277 5.75% D T 368-300- 161 1500 480Y/277 5.75% TO T 368-300- 201 2000 1 480Y/277 5.75% T T 368-300- 261 2500 1 480Y/277 5.75% TO T OFigure 1 (V-config.) of this specification T Low -voltage line and neutral terminals shall be stud type bushings in accordance with ANSI C57.12.26-1992, Fig. 9(d) and shall include a separate spade with NEMA standard drilling ®Figure 9(a) of ANSI C57.12.26 - 1992 (4-hole pad) ©Figure 9(b) of ANSI C57.12.26 - 1992 (6-hole pad) 3.2.2.2 INSULATION LEVEL 3.2.2.2.1 The basic impulse level (BIL) of the completely assembled transformer, including high -voltage and low -voltage terminals shall be 95 kV and 30 kV respectively. 3.2.2.2.2 Dielectric test levels shall be in accordance with the distribution levels in Paragraph 5.10 of ANSI C75.12.00-2000 3.2.2.2.3 The unit shall withstand test voltages in accordance with ANSI C57.12.00 and impulse tests in accordance with NEMA Standards for Transformers, Publications No. TR1. 3.2.2.3 TRANSFORMER CORE A five -legged core -coil assembly or three separate core -coil assemblies shall be employed. The use of three-legged designs is expressly prohibited. 368-300 REV. SYM: MM 3.2.2.4 HIGH VOLTAGE TAPS A no-load tap changer with external operating handle shall provide two 2'/2 full capacity taps above and below normal. The operating handle shall be mounted in the primary compartment. 3.2.2.5 BUSHING WELLS AND TERMINALS 3.2.2.5.1 The number, location, and arrangement of bushing wells, terminals and parking stands shall be as shown in Fig.1 and Fig. 5 of this specification. All low -voltage bushings and high -voltage wells shall be externally clamped and shall have leads of sufficient length to allow them to be changed without removing he cover. Welded bushings and wells are expressly prohibited. 3.2.2.5.2 High -voltage bushing wells shall be 200A load -break interface 8.3/14.4 kV bushings in accordance with ANSI/IEEE Sid. 386, 3.2.2.5.3 Low voltage bushing arrangement and spacing shall be "staggered", as shown in Fig. 5 of this Specification. 3.2.2.5.4 The low -voltage neutral shall be a fully insulated bushing. A ground pad shall be provided on the outer surface of the tank and a removable copper ground strap shall be provided and connected between the low -voltage neutral bushing and the ground pad. 3.2.2.5.5 The high -voltage neutral shall be connected to the low -voltage neutral internally with provision for opening this connection for testing. 3.2.2.6 ACCESSORY CABINET 3.2.2.6.1 The accessory cabinet shall consist of a high -voltage and low- voltage compartment generally constructed in accordance with applicable ANSI specifications and dimensioned in accordance with Fig. 1 of this Specification. 3.2.2.6.2 Cabinet doors shall be hinged, removable, and lockable. Stainless hinge pins shall be provided. 3.2.2.7 ACCESSORY EQUIPMENT Accessory equipment shall be provided in accordance with Table 1A and the following details: 3.2.2.7.1 Suitable jack bosses or equivalent jacking facilities shall be provided on the tank. Vertical clearance for a jack shall be 1 Yz inches minimum, 3'/2 inches maximum. 3.2.2.7.2 The transformer base shall be arranged for rolling in two directions: Parallel to and at right angles to the centerline of the high -voltage bushings. 3.2.2.7.3 Four lifting lugs shall be provided. These lugs shall be adequate strength and size and arranged on the tank to provide a suitable lift for the completely assembled unit. 3.2.2.7.4 The base of the assembly shall be provided with suitable means for mounting the unit.on the pad. An internal flange shall be provided at the base of the accessory compartment to provide means for mounting the unit on the pad. (Fig. 1). 3.2.2.7.5 Terminal designations are shown in Figure 1. The identification of terminal connections shall be shown on the instruction nameplate. Instruction nameplate shall be corrosion resistant, located in the low -voltage compartment, and shall be readable with cables in place. Where the nameplate is mounted on a removable part, the manufacturer's name and transformer serial number shall be permanently affixed to a non -removable part. Instruction nameplate shall contain the information specified in ANSI C57.12.00-2000, paragraph 5.12. In addition, either on the nameplate or label affixed near it, the manufacturer shall indicate that the dielectric fluid is non -PCB. 8 368-300 REV.SYM: MM 3.2.2.7.6 An automatic pressure relief device shall be located within the compartment. This device shall meet the following requirements: • '/4" NPT or larger male Inlet Port. • Exposed parts of weather and corrosion resistant materials. • Non -deteriorating gasket and o-ring material. • Manual pull ring able to withstand 25 pound force minimum. • Body able to withstand 100 pound force minimum. • Bug shield. • Cracking pressure of 10 t 2 psig. • Resealing pressure of 6 psig minimum. • Zero leak rate from resealing pressure to —8 psig. • Minimum flow rate of 35 SUM at 15 psig. 3.2.2.8 OIL PRESERVATION Transformers shall be of sealed -tank construction. Sealed -tank construction is that which seals the interior of the tank from the atmosphere, and in which the gas plus the oil volume remains constant. The transformer will remain effectively sealed for a top -oil temperature range of —320C to 105°C. 3.2.2.9 TANKS The tank shall be domed or sloped to shed water and shall be of sufficient strength to support a minimum of 500 lbs. Construction of the tank shall be in accordance with ANSI C57.12.26-1992, Section 7, except bolted cover is preferred. 3.2.2.9.1 If main cover is welded, adequate handhole(s) shall be provided. Handholes shall be concealed. Bolted -on covers shall be adequately gasketed and tamperproof. Main cover bolts may be exposed; however, where cover bolts are exposed, the corner bolts shall be welded or otherwise rendered tamperproof. 3.2.2.9.2 Tank grounding provision shall be in accordance with paragraph 7.6.4 of ANSI C52.12.26-1992. 3.2.2.9.3 Locking bolts shall be pentahead style. 3.2.2.10 OVERCURRENT PROTECTION Overcurrent protection shall consist of a single element current sensing bay-o-net fuse link in series with an ELSP current limiting backup fuse. Fuses shall be sized as shown in Table 2: Tahlp 2 _ Pusinn Rpnuirpmants Expulsion'F.use Continuous Current Limiting Fuse Stock kVA Current Rating Continuous Current Rating Number Capacity Part Number' Part Number' 368-300-008 75kVA 10A 30A 368-300-009 4000353C06 354403OM61M 368-300-015 150kVA 15A 40A - 368-300-016 4000353C08 3544040M61 M 368-300.030 300kVA 25A 65A 368-300.031 4000353C10 3544065M61M 368-300.051 500kVA 40A 100A 4000353C12 3544100M71M 368.300.075 750kVA 65A 125A 368-300-076 750kVA (4000353C14) (3544125M71M) 368-300-100 1000WA 368-300.101 1000kVA 368-300-151 1500kVA 140A 25OA : Parallel 125A fuses 368-300-201 2000kVA 4000353C17 3544125M71M 368-300-251 2500kVA 125A Hi -Amp OL Link C05CB 25OA : Parallel 125A fuses 3544125M71M Fuse shall be as specified in the table above or shall be an equivalent as approved in writing by Electric Standards Engineering. 9 368-300 REV.SYM: MM 3.2.2.11 COMPONENTS FOR LOOPED PRIMARY The minimum current -carrying capability of components for the looped primary cable system shall be 200 amperes (continuous) and 10,000 amperes symmetrical (momentary). 3.2.2.12 AUDIBLE SOUND LEVEL The audible sound level shall be in accordance with NEMA Standard TR1. 3.2.2.13 BASE PLAN The base plan of a completely assembled unit shall be such that it can be installed on a pad of the dimensions shown in Fig. 6 of this specification. 3.2.2.14 PAINT 3.2.2.14.1 Surfaces to be painted shall be blast cleaned (commercial blast) to provide a clean dry surface free of dirt, dust, chalk, loose paint, rust, grease and any other contaminants. 3.2.2.14.2 EEI "Finishing Guidelines" specification shall apply. Finish coat shall be Desert Tan, Munsell #10YR6.0/3.0, glossy. 3.2.2.15 SAFETY LABELS The manufacturer shall not apply NEMA 260 Safety Labels. The Purchaser will apply custom warning labels after delivery. 3.2.2.16 ANGULAR DISPLACEMENT: Per Fig.10(b) of ANSI C57.12.26-1992. 10 368-300 FLANGE 314- MIN 1 12" MA% i I i HEL[1W (L— _ .1_SJ I11N MIN i flay + + iI111 + �+ �. H� 4111 1 \:1 i —I 1- - - -Ld- + II D X� I I I I I I i i LL5 i t5 I 6_5 1 8.5 e.5 85 q. 380 MIN- — A - COMPARTMENT DIMENSIONS BUSHING (MINIMUM) HEIGHT KVA RATINGS LOW VOLTAGE RATINGS � R 75.150 ALL 23.25 27 225-500 I ALL 28 31 750-1000 ( 480Y277.208YI120 28 I 46 1500-2500 4ROY/227 28 45 NOTE: Denotes inside dimensions. Sae Fig 5 An danensions in (mches). Mannum dimensions shag allow no inch clearance from edge of pad (Fig. 6). MIN MIN - Figure 1 - Accessory compartment & Bushing Dimensions (Config. 1) REV.SYM: MM 368-300 2.85 MIN TANKSURFACE i TANK SURFACE � 1 I t 1 I iR I I I I I It I I I I I I I 0.75 + 1/8 -0 INSIDE Cable Accessory Parking Stand Figure 1A — Cable Accessory Parking Stand Detail Figure 2 (Config. 2) - DELETED 7/92 Figures 3 & 4 - DELETED 11/00 Ref. now to: ANSI C57.12.26 - 1992 figures 9(a) & 9(b) REV.SYM: MM 12 368-300 Sales prohibited/conflict of interest: no officer, employee, or member of City Council, shall have a financial interest in the sale to the City of any real or personal property, equipment, material, supplies or services where such officer or employee exercises directly or indirectly any decision - making authority concerning such sale or any supervisory authority over the services to be rendered. This rule also applies to subcontracts with the City. Soliciting or accepting any gift, gratuity, favor, entertainment, kickback or any items of monetary value from any person who has or is seeking to do business with the City of Fort Collins is prohibited. Freight terms: unless otherwise noted, all freight is F.O.B. Destination, Freight Prepaid. All freight charges must be included in prices submitted on proposal. Discounts: any discounts allowed for prompt payment, etc., must be reflected in bid figures and not entered as separate pricing on the proposal form. Purchasing restrictions: your authorized signature of this bid assures yourfirm's compliance with the City's purchasing restrictions. A copy of the resolutions is available for review in the Purchasing Office or the City Clerk's Office. Request Resolution 91-121 for cement restrictions. Collusive or sham bids: any bid deemed to be collusive or a sham bid will be rejected and reported to authorities as such. Your authorized signature of this bid assures that such bid is genuine and is not a collusive or sham bid. Bid results: for information regarding results for individual bids send a self-addressed, self -stamped envelope and a bid tally will be mailed to you. Bid results will be posted in our office 7 days after the bid opening. James B. O'Neill II, CPPO, FNIGP Director of Purchasing and Risk Management 4.01111, A A A 4.0" MIN �i MIN L X X3 - 1 t\ X0 /� t\ X2 /1 REV. SYM: MM 6" RADIUS TYPICAL 3 PLACES KVA RATINGS LOW VOLTAGE A B RATINGS 75-150 ALL 4.75 8 225-500 ALL 6 8 750-2500 480/277, 208Y/120 6 10 Figure 5 - Staggered Low - Voltage Bushing Arrangement (all dimensions minimum inches). NOTE: An area having a 6 inch radius around each bushing shall remain clear of obstructions such as gauges, etc. 13 368-300 REV.SYM: MM KVA SERIAL PAD DIMENSIONS (inches) A B C D E F 75 -006 thru -009 75 55 40 21 15 61 150 -015 75 55 40 21 15 61 150 -016 75 55 40 21 15 '61 300 -030 75 55 40 21 15 61 300 -031 75 55 40 21 15 61 500 -050 75 55 40 21 15 61 500 -051 75 55 40 21 15 61 750 -076,-075 85 72 49 23 15 67 1000 -101,-100 85 72 49 23 15 67 1500 -151 101 87 51 23 15 76 2000 -201 107 88 51 23 15 79 2500 -251 107 88 51 23 15 79 Fig. 6 - Pad Dimensions 14 368-300 REV.SYM: MM TABLE 1A ACCESSORY EQUIPMENT ACCESSORY KVA 75-150 300 500-2500 Tap changer handle in HV compartment X x x Instruction nameplate in LV compartment x x x Jacking provisions x x x Provisions for rolling in two directions x x x Lifting lugs x x x Provisions for mounting on pad x x x Arrester mounting provisions Grounding provisions in both compartments x x x V oil drain plug x 1" oil drain valve with sampling device x x Upper filter press and filling plug (or cap) (1") x x x Provisions for oil gauge x Provisions for pressure -vacuum gauge x x Oil gauge x Thermometer x x x Secondary CT mounting holes (4 holes on 4 3/8" x 5 5/8" centers) x x x Manuat/automatic pressure relief valve x x x 15 368-300 REV.SYM: MM 3.3 SPECIFIC REQUIREMENTS FOR DESIGN OF RADIAL -FEED Units 3.3.1 FUNCTIONAL DESCRIPTION The transformer shall be a three phase, pad mounted, radial feed safe break, "deadfront" type for use on a 13.8 kV grounded "Y" distribution system. 3.3.2 DESIGN AND CONSTRUCTION The requirements for radial -feed transformers shall be the same as those of loop -feed with the following exceptions: 3.3.2.1 RATINGS Tabla 3 . Radial -Feed Transformer Ratings Stock No. kVA Low voltage Impedance BushingT e/Conft . High Voltage Low Voltage 368-300- 006 75 208Y/120 1.9% m ®8 368-300- 007 75 480YI277 1.9% m OD m Per Figures 5A, & 7 of ANSI C57.12.26-1992 (In -Line) EXCEPTION: high voltage bushings shall be 32 - 36 inches above the base of the transformer 00 Figures 9(a) & 9(d) of ANSI C57.12.26 - 1992 (stud with 4-hole pad) 6 Figure 8(a) of ANSI C57.12.26-1992 (Staggered) 3.3.2.2 ACCESSORY CABINET The accessory cabinet shall be dimensioned in accordance with Fig. 7 of ANSI C57.12.26-1992. 4. QUALITY ASSURANCE 4.1 GENERAL 4.1.1 RESPONSIBILITY FOR INSPECTION Unless otherwise specified, the vendor is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified, the vendor may utilize his own facilities or any commercial laboratory acceptable to the City of Fort Collins. The City reserves the right to perform or witness any of the inspections set forth in this Specification where such inspections are deemed necessary. 4.1.2 TEST REPORT The manufacturer shall fumish to the purchaser certified copies of the results of all tests prior to payment. Copies shall be sent to the Design Section as well as with the invoice. Unsigned copies are not acceptable even if accompanied by a signed cover letter. The Quality Control Manager shall review and sign each test report. 4.2 TEST CONDITIONS Unless otherwise specified, testing defined in Section 4.6 shall be conducted under the following conditions: 4.2.1 REFERENCE TEMPERATURE The reference temperature to which losses, impedance, regulation, and efficiency are corrected shall be 85° C. 4.2.2 TOLERANCE ON IMPEDANCE VOLTAGE Tolerance shall be as specified in ANSI C57.12.00. 16 368-300 REV. SYM: MM 4.2.3 TOLERANCE ON IMPEDANCE VOLTAGE ON A TAP The percent departure of tested impedance voltage on any tap from tested impedance voltage at rated voltage shall not be greater than the total tap voltage range expressed as a percentage of the rated voltage. 4.3 FUNCTIONAL TESTS Functional tests shall consist of those tests and related requirements as cross referenced in Table 4 and shall be performed on each unit, except Temperature and Noise Tests which shall be performed on one unit of each design (KVA) per order. Tahla d - Functinnal Twata TEST TEST PARAGRAPH REQUIREMENT OR REFERENCE Examination Of Product 4.6 3.0, 3.1, 3.2. 3.3 hisspecification) Ratio 4.6 ANSI C57.12.00 Section 8 Polarity And Phase Relation 4.6 ANSI C57.12.00 Section 8 Excitation Loss 4.6 ANSI C57.12.00 Section 8 Excitation Current 4.6 ANSI C57.12.00 Section 8 Impedance & Load Loss 4.6 ANSI C57.12.00 Section 8 Temperature Tests' 4.6 ANSI C57.12.00 Section 8 Dielectric Tests 4.6.1 3.2.2.2 hisspecification) Impulse Tests 4.6.2 3.2.2.2 hisspecification) Leak Testing 4.6.3 3.2.2.8 & 3.2.2.9 hisspecification) Noise Testing* 4.6.4 3.2.2.12 hisspecification) 'One unit per design per order. 4.4 TEST METHODS -- FUNCTIONAL TESTS Each completed unit shall be inspected to determine compliance with respect to dimensions, material, workmanship, construction and marking, and routine tests on all units shall be made as specified in Section 8 of ANSI Standard C57.12.00, and in ANSI Standard C57.12.90. In addition to routine tests, the following test requirements and/or modifications shall apply. 4.4.1 DIELECTRIC TESTS Induced and applied potential Dielectric Tests shall be performed in accordance with ANSI C57.12.00 and C57.12.90. The low voltage windings shall have a test potential to ground of 10,000 volts for one minute. The test potential between high voltage windings shall be 34,000 volts for one minute. 4.4.2 IMPULSE TESTS ANSI Standard Impulse Tests shall be performed. Full Wave Impulse Test shall use a 1.5 x 50 microsecond wave. 4.4.3 LEAK TESTING The transformer tank shall be filled with oil and tested for air and oil leaks under (1) 4 psig vacuum for Y: hour, (2) 7 psig pressure for 24 hours in the sequence indicated. An alternate method of leak testing may be performed by injecting halogen gas under 10 psig and detecting leaks through the use of a halogen detector. (Note, the automatic/manual pressure relief device must be removed for this test). 4.4.4 NOISE TESTING Noise testing shall be conducted in accordance with applicable NEMA Standards. 5. PREPARATION FOR DELIVERY Transformers shall be prefilled with the appropriate amount of transformer oil and shall be shipped by open -bed truck. Units shall be packaged in such a way as to provide for ease of handling and to protect units from shipping damage. Units shall be fully palletized in four-way universal pallets with 28" minimum openings to facilitate handling from any side. Pallets shall be independent of the transformer. The Supplier shall give 24-hour notice prior to delivery for any shipments where an individual transformer weighs over 4,000 pounds. In addition to these requirements, the Supplier shall comply with any additional requirements or modifications shown on the purchase order and/or supplemental instructions. 17 368-300 REV.SYM: MM 6. DEFINITIONS AND ABBREVIATIONS • Vendor or Supplier - The manufacturer and/or manufacturer's agent supplying or quoting on the specified article. • Article, Unit, Assembly - All refers to the equipment defined by this specification. • DC or dc. - Direct Current. • AC or a.c. - Alternating Current. • •C - Degree Celsius (Centigrade) • •F - Degree Fahrenheit • kV -1000 volts. • CPS or Hz - Cycles per second. • psig - Pounds per square inch gauge. • V or v - Volts. • WA -1000 Volt-amperes. 18 368-300 REV.SYM: MM APPENDIX A Typical pad designs are shown in Figures 1A through 3A. The dimensions in inches of Figures 1A through 3A will fit the minimum compartments on transformers covered by this Specification as well as the maximum transformer envelope. 19 368-300 REV. SYM: MM I ��• I 55' (' -; Ijj,-/, i -r -i — T3- (I' !N I FRARY SEC I I I ° I F.R ONi y _L— 3' I 1 _ - r— 5' — 27' i9' FOUR =:1 REBAR LENGTH AND VID1H -%3 Notes on Poe Materiel — I. Concrete must be 3.000 psi minimum. 2. Mayimum coarse aggregate size 1 1/2 inches. Space reeuirements for pod and primary switching cabinet will generally be 9' % i2'. Factors to be considered in locating the pad include — 1. Accessibility — The transformer pod shall be accessible to line boom trucks equipped for the installation and removal of heavy transformers. Such cccessibility shall not require intrusion on adjacent property. 2. Proximity of E!Odlnas, Wells, 9crriers, cnd/or Overhangs — br addition to the clearances required for installation anc removal, the minimum clearance in front of the transformer pad shell be eight (8) feet and the minimum clearance from all other sides shall be :hree (3) feet. If the building has an overhang, clearance, to the edge of the transformer pad shall be measures horizontally from the outer edge of the ovenccng. Transformers through 300 KVA may be installed uncer the ovencitng if the vertical clearance between the pod and the ovencnng is of least 25 feet and the location is accessible to line boom trucks. 3. Codes and Standards - In cddltion to the above, the installotion shall conform to the Notional Electric Code and federal, state and city codes and standards. 2 8/25/93 REV NO. DATE DWN D.E. APP IDSING. ENG APP DIST. ARP CITY OF FORT COLLINS DING 3-PHASE-1 A1aM6M--MLWj LIGHT AND PCN/ER DEPARTMENT i TRANSFORMER PAD DESIGN � 4WD Mt 75 - 500 KVA usN snd 01tw111IR 3 PHASE Figure 1A - Pad Design (75 - 500XVA) 20 368-300 REV.SYM: MM I as' 1 I I J2 I PRIMARY V SECONDARYY I5I' FRONT— FOUR REBAR LENaTR -NC WIDTH --I — ag• — --;. —L_ r 3' Notes on Pod Material - I. Concrete must be 3,000 osi minimum. 2. Mayimum coarse aggregate sire i 1/2 inches. Sacce requirements for pod and primary switching cabinet will generally be 9' % 12'. Fecto:s to be considered in locating the pact include - i, Accessibility - The L•ansform �r pod snoll be accessible to line boom trucks equipped for ;he installation cnd removal of heavy transformers. Such accessibility shall not require intrusion on adjacent property. 2. Proximity of Buildings, Walls, Barriers, ona/ar Overhangs In addition to the clearances required for instcllotion end removol, the minimum clearance in front of the transformer pcd shall be eight (8) feet and the minimum clearance from oil other sides shall be four (3) fee:. If the building has an overhang, cicaranca to the edge of the tronsformer pad sheli be measured horizontally from the outer edge of the ovenccnq. Transformers through 300 KVA mcy be installed under Inc overhang if the varlicrl clearance oalween the ocd one the overhang is at least 25 feet and the location is accessible to line boom trucks. 3. Codes end Standards - In cadilion to the coove, Inc instcllotion shall conform to the National Electric Code end feaerol, stale and city codes end stcr.cards. I i l 02 '90 I NO.1 DATE 0 DIST. ARP A CITY Or O ORT COLLINS ! DavG 3PHASE2 LIGHT ANiO ROWEP. DEPARTMENT ( ' TRANSFORMER PAD OESiGN e..m.e..� v 500 — 1000 KVA uar.r .ne oowea 3 PHAS1= I I Figure 2A - Pad Design (500 - 1000 KVA) 21 368-300 REV. SYM: MM I 3. PR:MARY _ t I WI,IDOv SECONDARY _I I I J- 9• FRONT —1— Li �— c'9'--� c3"—_'— 28' — 2A'-- — FIVE 45 RE BAR LENGi� AND WIDTH II -- r 3' 7 5/9' _ _ _ _ _ — — L I I Notes on Pod Material — Concrete must be 3.000 psi minimum. 2. Mc%imum coarse aggregote size 1 1/2 inches. Space recui,amerus for pad and primary switching cabinet will generally be 9' % i2•. Fcclors to be considered in locating the pod include — I. Accessibility — the transformer pad shall be accessible to line boom trucks equipped for the installation and removal of hcovy transformers. Such accessibility shall not require intrusion on od;aeent property. 2. Proximity of Buildings, Wells, Barriers. and/or Overhangs — In cdditian to the clecrances required 'or installation and removal, the minimum clearance in front of the transformer Dad shall be eight (B) feel and the minimum clearonce from ell other side shall be four (a) feet. It the duildlng has an overhang, clearance to tie edge of tie transformer pod shell be mcosorec horizontally Irom the outer edge of the overhang. Transformers through 300 KVA may be installed under the overhang if the vertical clearance between the pod end the overhang is at least 25 feel and the location is accessible to line boom ;rucks. 3. Codes and Standards — In addition to the above• the installation shall conform to the National Electric Code and federal• state and city codes and stoncords. i l i /02/90 I j REV NO. ( DATE OWN D.E. APP OSNG. ENG APP DIST. .APP CITY OF FORT COLLINSARTOWG 3PHASE3 LIGHT AND POWER DEPARTMENT I TRANSFORMER PAD DESIGN i e .o..a..ew.. 1000 — 2500 :,VA �.nur ..a PCw 3 FHAS^ Figure 3A - Pad Design (1000-2500 KVA) 22 368-300 FIRM CITY OF FORT COLLINS BID PROPOSAL BID NO. 7225 LP Transformers, 75kVA & 300kVA, Pad -Mounted, Compartmental Type BID DATE: 3:00 p.m. (Our clock) April 12, 2011 WE HEREBY ENTER OUR BID FOR THE CITY OF FORT COLLINS' REQUIREMENTS FOR LP Transformers, 75 kVA & 300kVA, Pad -Mounted, Compartmental Type, PER THE BID INVITATION AND ANY REFERENCED SPECIFICATIONS. QUANTITY: DESCRIPTION: 5 Ea. TRANSFORMER, 75kVA PAD -MOUNTED COMPARTMENTAL TYPE, THREE PHASE DISTRIBUTION WITH SEPARABLE INSULATED LOAD BREAK HIGH VOLTAGE CONNECTORS. HIGH VOLTAGE RATING: 13200 GRDY/7620. LOW VOLTAGE RATING:208Y/120. SERIAL NUMBER 008 TO BE IN ACCORDANCE WITH SPECIFICATION #368-300-008, REVISION, MM 5 Ea. TRANSFORMER, 300kVA PAD -MOUNTED COMPARTMENTAL TYPE, THREE PHASE DISTRIBUTION WITH SEPARABLE INSULATED LOAD BREAK HIGH VOLTAGE CONNECTORS. HIGH VOLTAGE RATING: 13200 GRDY/7620. LOW VOLTAGE RATING:208Y/120. SERIAL NUMBER 030 TO BE IN ACCORDANCE WITH SPECIFICATION #368-300-030, REVISION, MM PLEASE COMPLETE THE ATTACHED EXCEL SPREAD SHEET FOR BID SUBMITTAL. IF YOU ELECT TO PASSWORD PROTECT YOUR BID, PLEASE NOTE THAT PASSWORD BELOW. *Any surcharges or additional costs shall be noted & included in bid submittal. The transformers being bid meet or exceed the specifications. Yes No. If not, please list exceptions,(specifying paragraph reference number) on a separate sheet of paper and attach to your bid. Escalation is , is not applicable for the transformers bid. If escalation applies, the bidder shall indicate in his bid the specific items or materials subject to escalation, and shall give the method and indices to be used in computing the amount thereof. Escalation occurring after the quoted delivery date will not be paid unless delays are the result of actions by the city. Escalation occurring after acceptance if purchaser exercises the option to delay shipment after manufacturing REV.SYM: MM APPENDIX B Transformers purchased under this Specification shall be of the make shown below. Manufacturers not listed below may submit written proposals demonstrating compliance with these Specifications for consideration of addition to the accepted manufacturer list prior to the next request for bids. In addition to inclusion on the list below, manufacturer's equipment must also satisfy all requirements of this Specification to be acceptable. TABLE 3B MANUFACTURER SERIAL NO. Cooper Power Systems All ASEA Brown-Bovari (ABB) All Howard Industries All Pauwels Transformers All The manufacturers in the following list have been conditionally approved and may bid as an alternate. The definition and intent of "Conditional Approval" of a manufacturer is to allow the City to gain some experience with the manufacturers product. Should a conditionally approved manufacturer be the evaluated low bidder, the City reserves the right to award all, part, or none of the order to them, dependant upon the current needs of the City for that item or items. 23 368-300 REV. SYM: MM APPENDIX C The following forms for Individual and Average Transformer Losses are used by the City of Fort Collins to determine loss penalties. 1) Transformer Loss Evaluation Average Losses Form 2) Individual Transformer Loss Evaluation Form 24 368-300 City Order No. Manufacturer KVA/Unit (6) (7) (8) H (10) TRANSFORMER LOSS EVALUATION -AVERAGE LOSSES S/N Invoice No. DESCRIPTION No. of units Average core losses Quoted core losses Excess average core losses: line (2) less line (3) Penalty for excess average core losses line (1) x line (4) x $ Average copper losses Quoted copper losses Excess average copper losses: line (6) less line (7) Penalty for excess average copper losses: line (1) x line (8) x $ Penalty to be assessed manufacturer: line (5) plus line (9) but not less than zero Date Prepared By: Design Engineering AMOUNT REV.SYM: MM NOTE: If any unit(s) exceeds the loss tolerances of ANSI C57.12.00, Light & Power will either reject it, include it on these averages, or calculate losses using the Individual Transformer Losses Evaluation Form, whichever is most favorable to Light and Power. 25 368-300 INDIVIDUAL TRANSFORMER LOSS EVALUATION City Order No Manufacturer KVA/Unit LINE DESCRIPTION (1) Tested core losses (2) Quoted core losses (3) Excess core losses line (1) less line (2) but not less than zero (4) Percent difference Line (3) =line (2) x 100 (5) Tested total losses (6) Quoted total losses (7) Excess total losses Line (5) less line (6) but not less than zero. (8) Percent difference Line (7) _ line (6) x 100 (9) Tested copper losses (10) Quoted copper losses (11) Excess copper losses Line (9) less line (10) but not less than zero. (12) Penalty for excess core losses Line (3) x $ (13) Penalty for excess copper losses Line (11) x $ S/N (14) Penalty to be assessed manufacturer Line (12) plus line (13) Date Invoice No. Prepared By: Design Engineering AMOUNT REV.SYM: MM 26 368-300 Revised 12/13/96 Special Conditions and Supplemental Instructions to Bidders Applicable to Specification 368-300 A. Data to be supplied with Bidders Proposal The following data shall be supplied with the bidder's proposal in addition to that information required by the "Invitation to Bid" and the "Purchase Requisition". l . Impedance volts in percent (%) at full load, high voltage to low voltage at 850C 2. No load and total losses at 85°C 3. Delivery in weeks 4. A statement indicating compliance with our Specification with exception or a detailed list of exceptions. 5. Escalation IS / IS NOT applicable for the transfonners bid. If escalation applies, the Bidder shall indicate in his bid, the specific items or materials subject to escalation and shall provide the method and indices to be used in computing the amount thereof. Escalation occurring after acceptance, if Purchaser exercises the option to delay shipment after manufacturing is completed, will not be paid. If the above information and compliance statement are not supplied the proposal will not be evaluated An alternate bid for the total order may be submitted in addition to the unit bids. B. Loss Evaluations Loss penalties and loss evaluations will be based on the following values: 1. No-load or excitation losses at $3.90/watt 2. Load losses at $2.30/watt C. Shipping Terms Ship F.O.B. point of destination, freight prepaid. D. Terms of Payment I . If escalation applies, the City of Fort Collins shall not be billed for escalation occurring after the promised delivery date. 2. Test reports shall accompany the invoice. If test reports do no accompany the invoice, late payment penalty charges incurred due to delays in obtaining the test reports will not be paid. Certified copies of test reports shall be sent to the Standards Engineering Section, Fort Collins Utilities - Light & Power. 3. Loss penalty credits and escalation charges shall be itemized on the invoice. THE CITY OF FORT COLLINS Light and Power Department P.O. Box 580 Fort Collins. CO 80522 SPECIFICATION NO: 368-300 TITLE: PAD -MOUNTED COMPARTMENTAL-TYPE.THREE-PHASE DISTRIBUTION TRANSFORMERS WITH SEPARABLE INSULATED LOAD BREAK HIGH -VOLTAGE CONNECTORS APPROVED BY: Kraig Bader Standards Engineering Division Manager ORIGINATION DATE: 8/12/83 REVISED: 2/2/2005 REV. SYM: MM ITEMS COVERED BY THIS SPECIFICATION DESCRIPTION STOCK NO. SPECIFICATION NO. SERIAL 75 KVA, 208Y/120 RADIAL 368-300 -006 75 KVA, 408Y/277 RADIAL 368-300 -007 75 KVA, 208Y/120 LOOP 368-300 -008 75 KVA, 480Y/277 LOOP 368-300 -009 150 KVA, 208Y/120 LOOP 368-300 -015 150 KVA, 480Y/277 LOOP 368-300 -016 300 KVA, 208Y/120 LOOP 368-300 -030 300 KVA, 480Y/277 LOOP 368-300 -031 500 KVA, 208Y/120 LOOP 368-300 -050 500 KVA, 480Y/277 LOOP 368-300 -051 750 KVA, 208Y/120 LOOP 368-300 -075 750 KVA, 480Y/277 LOOP 368-300 -076 1000 KVA, 208Y/120 LOOP 368-300 -100 1000 KVA, 480Y1277 LOOP 368-300 -101 1500 KVA, 480Y/277 LOOP 368-300 -151 2000 KVA, 480Y/277 LOOP 368-300 -201 2500 KVA, 480Y/277 LOOP 368-300 -251 368-300 REV. SYM: MM REVISION DESCRIPTIONS REVISION DESCRIPTION Previous on file APPROVED REVISION FF: Tim Sagan • Add Paragraph 5.2.2.9.3: pentahead locking bolts Susan Coram • Paragraph 3.2.2.13.1: add glossy requirement. 10-18-95 REVISION GG: Susan Coram • Title page: Remove revised date Tim Sagen • Paragraph 4.4 and Table 2A: Change Temperature Tests and Noise Test from every 9-22-95 unit to one unit of design. REVISION HH: Opal Dick • GE removed from Appendix B Tim Sagen 12-13-96 REVISION II: • Add paragraph 3.2.2.10 OVERCURRENT PROTECTION and renumber remaining paragraphs in section 3.2 Opal Dick • Revise Fig. 1 to reflect a "V' configuration for the primary bushing arrangement vs. an Tim Sagan in -line arrangement. 6/3/99 • Revise Fig. 17 to remove requirement for CT mounting studs and increase dimensions A from 5" and 5.5" to 6" on 225-2500 kVA sizes REVISION JJ , Bill Bray • Reformat and converted to MS Word, delete List of Active Pages Tim Sagan 9 /14 / 2000 REVISION KK Kraig Bader • Added drawing 1a to describe cable accessory parking stand detail, revise to reflect Tim Sagen current editions of national standards, change impedance on 368-300-009 from 9 / 11 / 2001 1.7% to 1.9%. REVISION LL Kraig Bader • Change fusing from oil -immersed current sensing weak link cartridge to a current 4/2/2004 sensing bay-o-net fuse link in series with an ELSP current limiting backup fuse (clause 3.2.2.10). • Change column header for impedance table in 3.2.2.1 to clarity that impedance numbers are nominal values. (Tolerances are consistent with ANSI C.57.12.00- 2000) • Changed wording from "Mr. Ouch" in 3.2.2.15 to "warning label" Revision MM Kraig Bader • Change clause 3.2.2.10 to specify current sensing bay-o-net fuse link by size and 2/2/2005 part number. Table 2 was added for this purpose. • Renamed table in 3.3.2.1 to from Table 2 to Table 3 • Renamed table in 4.3. from Table 2A to Table 4 3 368-300 REV. SYM: MM TABLE OF CONTENTS ITEMS COVERED BY THIS SPECIFICATION................................................................................................................................2 REVISIONDESCRIPTIONS......_.........................................................................................................................................................3 1. SCOPE..................................................................................................................................................................................................5 2. APPLICABLE DOCUMENTS........................................................................................................................................................._5 3. REQUIREMENTS......................................................................................................_.......................................................................5 3.1 GENERAL REQUIREMENTS FOR DESIGN................................................................................................................................5 3.2 SPECIFIC REQUIREMENTS FOR DESIGN OF LOOP -FEED UNITS........................................................................................7 3.3 SPECIFIC REQUIREMENTS FOR DESIGN OF RADIAL -FEED UNITS................................................................................. 16 4. QUALITY ASSURANCE.................................................................................................................................................................16 4.1 GENERAL.....................................................................................................................................................................................16 4.2 TEST CONDITIONS..................................................................................................................................................................... 16 4.3 FUNCTIONAL TESTS..................................................................................................................................................................17 4.4 TEST METHODS -- FUNCTIONAL TESTS................................................................................................................................17 5. PREPARATION FOR DELIVERY.................................................................................................................................................17 6. DEFINITIONS AND ABBREVIATIONS.......................................................................................................................................18 APPENDIXA.........................................................................................................................................................................................19 APPENDIXB.........................................................................................................................................................................................23 APPENDIXC.........................................................................................................................................................................................24 TRANSFORMER LOSS EVALUATION -AVERAGE LOSSES.................................................................................................25 INDIVIDUAL TRANSFORMER LOSS EVALUATION..............................................................................................................26 4 368-300 SPECIFICATION FOR PAD -MOUNTED COMPARTMENTAL -TYPE, THREE-PHASE DISTRIBUTION TRANSFORMERS WITH SEPARABLE INSULATED LOAD BREAK HIGH -VOLTAGE CONNECTORS 1. SCOPE REV.SYM: mm This Specification establishes the minimum electrical requirements and mechanical features of three phase, 60 HZ, mineral oil immersed, self -cooled, pad -mounted, compartmental -type distribution transformers rated 2500 kVA and smaller, high voltage 13,200 Grd Y/7620 volts, with separable insulated load break high voltage connectors. These transformers are used for step down purposes from an underground primary cable supply. This standard generally conforms to ANSI requirements for pad -mounted compartmental -type, self -cooled, three-phase distribution transformers for use with separable insulated high -voltage connectors, C57.12.26. 2. APPLICABLE DOCUMENTS The following documents form a part of this Specification to the extent specified herein. The latest issue in effect on the date of invitation for bids shall form a part of this Specification, unless otherwise noted. • ANSI C57.12.00 - Distribution, power, and regulating transformers, and shunt reactors, general requirements for • ANSI C57.12.26 - Pad mounted, compartmental -type, self -cooled three phase, distribution transformers for use with separable insulated high voltage connectors, high voltage 34,500 Grd Y/19,920 volts and below, 2500 kVA and smaller, requirements for • ANSI C57.12.70 - Terminal markings and connections for distribution and power transformers • ANSI C57.12.80 - Terminology for power and distribution transformers • ANSI C57.12.90 - Distribution, power, and regulating transformers, and shunt reactors, test code for • ANSIIIEEE 386 - Separable insulated connectors for power distribution systems above 600V • NEMA STANDARD TR1 - Transformers, regulators and reactors 3. REQUIREMENTS 3.1 GENERAL REQUIREMENTS FOR DESIGN 3.1.1 BASIC DESIGN STANDARDS Transformers purchased under these Specifications shall be new and, unless otherwise specified, meet the requirements of the applicable ANSI Standards and the modifications and additions given in the subsequent paragraphs. In case of conflict, the requirements of the following documents shall apply in the priority shown: a) This Specification. b) ANSI C57.12.26 c) Other applicable ANSI and NEMA Standards. 3.1.2 KILOVOLT -AMPERE TEMPERATURE RATINGS Kilovolt -ampere ratings are continuous and are based on not exceeding either a 650C average winding temperature or an 800C hot spot temperature rise. The temperature rise of the insulating oil shall not exceed 65°C when measured near the top of the tank. The temperature rise is based on an altitude of 3,300 feet. 3.1.3 GENERAL CONSTRUCTION 3.1.3.1 The pad -mounted compartmental -type transformers shall consist of the transformer tank, high -voltage cable terminating compartment, and the low -voltage cable -terminating compartment. All three of these components shall be assembled as an integral unit, tamperproof and weatherproof for mounting on a pad. There shall be no exposed screws, bolts or other fastening devices, which are externally removable, except the main cover bolts may be exposed. Where the main cover bolts are exposed, the 5 368-300 is completed, will not be paid. Delivery may be a consideration of bid award For purposes of warranty and service ONLY approved manufacturers or distributors authorized by an approved manufacturer to serve the Fort Collins area may bid. The City of Fort Collins reserves the right to split the bid in whatever percentages are most advantageous to the City. Future orders of LP Transformers, 75kVA & 300kVA, Pad -Mounted, Compartmental Style may be authorized, at the option of the City, from this bid for a period of five years after date of award. Satisfactory pricing and delivery is required for future orders based on this bid. SUPPLEMENTAL INSTRUCTIONS Prices quoted must remain firm for a 30 day period after the opening date. Freight terms: F.O.B. destination freight prepaid. All freight charges must be included in pricing submitted on proposal and not entered as separate pricing. Any discount allowed by Vendor for prompt payment, etc. must be reflected in quoted figure, and not entered as separate pricing. The City reserves the right to accept or reject any and all quotes. Bidder not responding to the services requested in this bid shall be removed from our automated listing for: Not Applicable Any questions or inquiries regarding this bid should be directed to: Opal F. Dick, CPPO, Senior Buyer (970)221-6778 SIGNATURE AND TITLE: TYPED OR PRINTED NAME AND TITLE COMPANY NAME: (AREA CODE) TELEPHONE NUMBER/FAX NUMBER ADDRESS: STREET, CITY, STATE, ZIP DATE EMAIL: REV. SYM: MM corner bolts shall be welded or otherwise rendered tamperproof. There shall be no opening through which foreign objects such as sticks, rods, or wires might be inserted to contact live parts. Suitable means for padlocking the compartment door(s) shall be provided. 3.1.3.2 The high and low -voltage compartment shall be located side by side on one side of the transformer tank. When facing the compartment, the low -voltage compartment shall be on the right. 3.1.3.3 Construction of the unit shall be such that it can be lifted, skidded, and slid into place on the mounting pad without disturbing the entrance cables. 3.1.3.4 An undercoating over the regular finish or an equivalent treatment shall be applied to all surfaces that are in contact with the pad to minimize corrosion. 3.1.3.5 Minimum dimensions shall be as shown in Fig. 1 of this Specification. Maximum transformer and minimum pad dimensions are shown in Fig. 6 of this Specification. 3.1.4 LOSSES The total losses of a transformer shall be the sum of the excitation losses and the load losses (IZR losses). Load loss tests shall be performed and reported on all units regardless of whether or not a record of such tests is available on duplicate units. Loss evaluations and loss costs will be based on the values shown in the "Special Conditions and Supplemental Instructions to Bidders." Transformers will be evaluated on excitation losses and IZR losses at the specified rates. If tested losses exceed quoted losses but are within the tolerances of paragraph 9.3, ANSI C57.12.00-2000, the additional cost incurred from the differential of losses will be calculated using the following equation and the above specified rates and will be deducted from the original Purchase Order or back charged to the manufacturer. In Table 18 and the following equation "Units" shall mean "Transformers of the same size and design on one order." Excess loss $ _ [No. of units] ((No Load Loss Evaluation $) (Avg. No Load Losses — Quoted No Load Losses) + (Load Loss Evaluation $) (Avg. Load Losses — Quoted Load Losses)]. If this equation results in a negative number no credit will be given the Supplier. If any unit or units exceed the tolerances of paragraph 9.3, ANSI C57.12.00-2000, that unit or units shall not be shipped without express permission from the City. If accepted, the deduction for excess losses will be based on the following equation: Excess loss $ _ (No Load Loss Evaluation $) (No Load Losses — Quoted No Load Losses) But Not Less Than Zero + (Load Loss Evaluation $) (Load Losses — Quoted Losses) But Not Less Than Zero. 3.1.5 SERVICE CONDITIONS Service conditions shall be as defined in paragraph 4.1 of ANSI C57.12.00 except the ambient temperature range shall be 40°C above to 32°C below zero. The transformer shall operate safely with starting temperatures as low as 32°C below zero. 6 368-300 REV. SYM: MN 3.2 SPECIFIC REQUIREMENTS FOR DESIGN OF LOOP -FEED Units 3.2.1 FUNCTIONAL DESCRIPTION The transformer shall be a three phase, pad mounted, loop feed -safe break, "deadfront" type for use on a 13.8 kV grounded "Y" distribution system. 3.2.2 DESIGN AND CONSTRUCTION 3.2.2.1 RATINGS Table 1 - L000-Feed Transformer Ratings Stock No. kVA Low Voltage Nominal Impedance BushingT e/Confi . High Voltage Low Voltage 368-300- 008 75 208Y/120 1.9% i0 3® 368-300- 009 75 480Y/277 1.7% i0 OO O 368-300- 015 150 208Y/120 2.1% (D 0® 368-300- 016 150 480Y/277 2.1% TO OO 368-300- 030 300 208Y/120 2.5% OO O® 368-300- 031 300 480Y/277 2.5% iO O® 368-300- 050 500 208Y/120 3.04% OO 00 368-300- 051 500 480Y/277 3.04% (D O D 368-300- 075 750 208Y/120 5.75% i0 0 368-300- 076 750 480Y/277 5.75% OO 0 368-300- 100 1000 208Y/120 5.75% O 0 368-300- 101 1000 480Y/277 5.75% TO 0 368-300- 151 1500 480Y/277 5.75% OO 0 368-300- 201 2000 480Y/277 5.75% OO 0 368-300- 261 1 2500 480Y/277 5.75% TO 0 OFigure 1 (V-config.) of this specification O Low -voltage line and neutral terminals shall be stud type bushings in accordance with ANSI C57.12.26-1992, Fig. 9(d) and shall include a separate spade with NEMA standard drilling ®Figure 9(a) of ANSI C57.12.26 - 1992 (4-hole pad) OFigure 9(b) of ANSI C57.12.26 - 1992 (6-hole pad) 3.2.2.2 INSULATION LEVEL 3.2.2.2.1 The basic impulse level (BIL) of the completely assembled transformer, including high -voltage and low -voltage terminals shall be 95 kV and 30 kV respectively. 3.2.2.2.2 Dielectric test levels shall be in accordance with the distribution levels in Paragraph 5.10 of ANSI C75.12.00-2000 3.2.2.2.3 The unit shall withstand test voltages in accordance with ANSI C57.12.00 and impulse tests in accordance with NEMA Standards for Transformers, Publications No. TRi. 3.2.2.3 TRANSFORMER CORE A five -legged core -coil assembly or three separate core -coil assemblies shall be employed. The use of three-legged designs is expressly prohibited. 368-300 REV. SYM: MM 3.2.2.4 HIGH VOLTAGE TAPS A no-load tap changer with external operating handle shall provide two 2'/z full capacity taps above and below normal. The operating handle shall be mounted in the primary compartment. 3.2.2.5 BUSHING WELLS AND TERMINALS 3.2.2.5.1 The number, location, and arrangement of bushing wells, terminals and parking stands shall be as shown in Fig.1 and Fig. 5 of this specification. All low -voltage bushings and high -voltage wells shall be externally clamped and shall have leads of sufficient length to allow them to be changed without removing he cover. Welded bushings and wells are expressly prohibited. 3.2.2.5.2 High -voltage bushing wells shall be 200A load -break interface 8.3/14.4 kV bushings in accordance with ANSI/IEEE Sid. 386. 3.2.2.5.3 Low voltage bushing arrangement and spacing shall be "staggered", as shown in Fig. 5 of this Specification. 3.2.2.5.4 The low -voltage neutral shall be a fully insulated bushing. A ground pad shall be provided on the outer surface of the tank and a removable copper ground strap shall be provided and connected between the low -voltage neutral bushing and the ground pad. 3.2.2.5.5 The high -voltage neutral shall be connected to the low -voltage neutral internally with provision for opening this connection for testing. 3.2.2.6 ACCESSORY CABINET 3.2.2.6.1 The accessory cabinet shall consist of a high -voltage and low- voltage compartment generally constructed in accordance with applicable ANSI specifications and dimensioned in accordance with Fig. 1 of this Specification. 3.2.2.6.2 Cabinet doors shall be hinged, removable, and lockable. Stainless hinge pins shall be provided. 3.2.2.7 ACCESSORY EQUIPMENT Accessory equipment shall be provided in accordance with Table 1A and the following details: 3.2.2.7.1 Suitable jack bosses or equivalent jacking facilities shall be provided on the tank. Vertical clearance for a jack shall be 1'/2 inches minimum, 3'/z inches maximum. 3.2.2.7.2 The transformer base shall be arranged for rolling in two directions: Parallel to and at right angles to the centerline of the high -voltage bushings. 3.2.2.7.3 Four lifting lugs shall be provided. These lugs shall be adequate strength and size and arranged on the tank to provide a suitable lift for the completely assembled unit. 3.2.2.7.4 The base of the assembly shall be provided with suitable means for mounting the unit on the pad. An internal flange shall be provided at the base of the accessory compartment to provide means for mounting the unit on the pad. (Fig. 1). 3.2.2.7.5 Terminal designations are shown in Figure 1. The identification of terminal connections shall be shown on the instruction nameplate. Instruction nameplate shall be corrosion resistant, located in the low -voltage compartment, and shall be readable with cables in place. Where the nameplate is mounted on a removable part, the manufacturer's name and transformer serial number shall be permanently affixed to a non -removable part. Instruction nameplate shall contain the information specified in ANSI C57.12.00-2000, paragraph 5.12. In addition, either on the nameplate or label affixed near it, the manufacturer shall indicate that the dielectric fluid is non -PCB. 8 368-300 REV.SYM: MM 3.2.2.7.6 An automatic pressure relief device shall be located within the compartment. This device shall meet the following requirements: • %4" NPT or larger male Inlet Port. • Exposed parts of weather and corrosion resistant materials. • Non -deteriorating gasket and o-ring material. • Manual pull ring able to withstand 25 pound force minimum. • Body able to withstand 100 pound force minimum. • Bug shield. • Cracking pressure of 10 t 2 psig. • Resealing pressure of 6 psig minimum. • Zero leak rate from resealing pressure to —8 psig. • Minimum flow rate of 35 SUM at 15 psig. 3.2.2.8 OIL PRESERVATION Transformers shall be of sealed -tank construction. Sealed -tank construction is that which seals the interior of the tank from the atmosphere, and in which the gas plus the oil volume remains constant. The transformer will remain effectively sealed for a top -oil temperature range of-320C to 105°C. 3.2.2.9 TANKS The tank shall be domed or sloped to shed water and shall be of sufficient strength to support a minimum of 500 lbs. Construction of the tank shall be in accordance with ANSI C57.12.26-1992, Section 7, except bolted cover is preferred. 3.2.2.9.1 If main cover is welded, adequate handhole(s) shall be provided. Handholes shall be concealed. Bolted -on covers shall be adequately gasketed and tamperproof. Main cover bolts may be exposed; however, where cover bolts are exposed, the corner bolts shall be welded or otherwise rendered tamperproof. 3.2.2.9.2 Tank grounding provision shall be in accordance with paragraph 7.6.4 of ANSI C52.12.26-1992. 3.2.2.9.3 Locking bolts shall be pentahead style. 3.2.2.10 OVERCURRENT PROTECTION Overcurrent protection shall consist of a single element current sensing bay-o-net fuse link in series with an ELSP current limiting backup fuse. Fuses shall be sized as shown in Table 2: Table 2 — Fusina Reauieements Expulsion Fuse Continuous Current Limiting Fuse Stock kVA Current Rating Continuous Current Rating Number Capacity Part Number" Part Number' 368-300-008 75kVA 10A 30A 368-300.009 4000353C06 3544030M61M 368-300-015 150kVA 15A 40A 368-300-016 4000353C08 3544040M61M 368-300-030 300kVA 25A 65A 368-300-031 4000353C10 3544065M61M 368-300-051 500kVA 40A 100A 4000353C12 3544100M71M 368-300-075 750kVA 65A 125A 368-300-076 750kVA (4000353C14) (3544125M71M) 368-300-100 1000kVA 368-300.101 1000kVA 368-300-151 1500kVA 140A 25OA : Parallel 125A fuses 368-300-201 2000kVA 4000353C17 3544125M71M 368-300-257 2500kVA 125A Hi -Amp OL Link C05C8 25OA : Parallel 125A fuses 3544125M71M Fuse shall be as specified in the table above or shall be an equivalent as approved in writing by Electric Standards Engineering. 9 368-300 REV.SYM: MM 3.2.2.11 COMPONENTS FOR LOOPED PRIMARY The minimum current -carrying capability of components for the looped primary cable system shall be 200 amperes (continuous) and 10,000 amperes symmetrical (momentary). 3.2.2.12 AUDIBLE SOUND LEVEL The audible sound level shall be in accordance with NEMA Standard TR1. 3.2.2.13 BASE PLAN The base plan of a completely assembled unit shall be such that it can be installed on a pad of the dimensions shown in Fig. 6 of this specification. 3.2.2.14 PAINT 3.2.2.14.1 Surfaces to be painted shall be blast cleaned (commercial blast) to provide a clean dry surface free of dirt, dust, chalk, loose paint, rust, grease and any other contaminants. 3.2.2.14.2 EEI "Finishing Guidelines' specification shall apply. Finish coat shall be Desert Tan, Munsell #10YR6.0/3.0, glossy. 3.2.2.15 SAFETY LABELS The manufacturer shall not apply NEMA 260 Safety Labels. The Purchaser will apply custom warning labels after delivery. 3.2.2.16 ANGULAR DISPLACEMENT: Per Fig. 10(b) of ANSI C57.12.26-1992. 10 368-300 27 0 FLANGE 310' MIN 1 12' MAX I i Ifk:LI7W fL — •I_5 I + ri�tlN I MIN X 1 ' X.1 ( 4. — _�T _ _ .1_11 .I XO X2 II B I I LI_s 0_5 i e 5 I 9.5 4.5 T 85 f�. 38.0 MIN' A COMPARTMENT DIMENSIONS BUSHING (MINIMUM) HEIGHT KVA RATINGS LOW VOLTAGE RATINGS A' I B 75.150 ALL 23.25 27 225-500 ALL 28 I 31 750Q7000 480Y277.20SY1120 28 I IB 1500-2500 4BOY1227 28 /6 NOTE: Denotes inside dimensions. ^ Sao Fig.S All dimensions in (InMes). M".m dimensons shag allow one inch clearance from edge of pad (Fig. 8). MIN MIN. Figure 1 -Accessory compartment & Bushing Dimensions (Config. 1) REV.SYM: MM 11 368-300 2.85 MIN TANK SURFACE TANK SURFACE 1 I 1 1 I � 1 iR I I 1 I I I I I I i 1 i 0.75 + 1/8 -0 INSIDE Cable AccnwrV Parking Stand Figure 1A — Cable Accessory Parking Stand Detail Figure 2 (Config. 2) - DELETED 7/92 Figures 3 & 4 - DELETED 11/00 Ref. now to: ANSI C57.12.26 - 1992 figures 9(a) & 9(b) REV.SYM: MM 12 368-300 A nit A A A a nfo _r XO i X2 REV. SYM: MM 6" RADIUS TYPICAL 3 PLACES KVA RATINGS LOW VOLTAGE A B RATINGS 75-150 ALL 4.75 8 225-500 ALL 6 8 750-2500 i 480/277, 208Y/120 6 10 Figure 5 - Staggered Low - Voltage Bushing Arrangement (all dimensions minimum inches). NOTE: An area having a 6 inch radius around each bushing shall remain clear of obstructions such as gauges, etc. 368-300 REV.SYM: MM KVA SERIAL PAD DIMENSIONS (inches) A B C D E F 75 -006 thru —009 75 55 40 21 15 61 150 -015 75 55 40 21 15 61 150 -016 75 55 40 21 15 '61 300 -030 75 55 40 21 15 61 300 -031 75 55 40 21 15 61 500 -050 75 55 40 21 15 61 500 -051 75 55 40 21 15 61 750 -076,-075 85 1 72 1 49 23 15 67 1000 -101,-100 85 72 49 23 15 67 1500 -151 101 87 51 23 15 76 2000 -201 107 88 51 23 15 79 2500 -251 107 88 51 1 23 15 1 79 Fig. 6 — Pad Dimensions 14 368-300 REV. SYM: MM TABLE 1A ACCESSORY EQUIPMENT ACCESSORY KVA 75-150 300 500-2500 Tap changer handle in HV compartment X X X Instruction nameplate in LV compartment X X X Jacking provisions X X X Provisions for rolling in two directions X X X Lifting lugs X X X Provisions for mounting on pad X X X Arrester mounting provisions Grounding provisions in both compartments X X X V oil drain plug X 1" oil drain valve with sampling device X X Upper filter press and filling plug (or cap) (1") X X X Provisions for oil gauge X Provisions for pressure -vacuum gauge X X Oil gauge X Thermometer X X X Secondary CT mounting holes (4 holes on 4 3/8" x 5 5/8" centers) X X X Manual/automatic pressure relief valve X X X 15 368-300 Fort Collins Utilities Transformer Bid Loss Data Sheet # Units 5 Bid #: 7225 Preparer Name: Name Size 75kVA Date: April 12, 2011 Preparer Contact Num: Number NL Loss Cost $ 3.90 FL Loss Cost $ 2.30 Escalation Base Bid $ / Guar No Load Guar Full Load Meet Specs? (is / is not) Guar Total NL Loss' NL Supplier Mfr / Mfr# Each Del/Wks Loss Loss Impedance (Yes / No) a factor Load Loss Loss Cost Supplier 1 Mfg 1 $ 0 0 0.00 - 0$ Supplier 2 Mfr 2 $ 0 0 0.00 0$ Supplier 3 Mfr 3 $ 0 0 0.00 0$ Directions for Bidders: 1) Fill out the information in the cells with blue text. 2) Save the file using your company name and the bid number and e-mail it to: purchasing@fcgov.com (Example: TransformerSales_Bid_58.xls) If you are concerned about security, you may password -protect this file after you have entered your data. To protect this file, take the following steps: 1) Select Tools, Options 2) Select Security Tab 3) Type your password in the "Password to Open" field. 4) Re-enter your password to confirm it. Important! Please remember to include this password in the bid information that will be sealed in the envelope that will be unsealed at Bid Opening. This will secure your data until the time of the bid opening. 5) Save the file and e-mail it to: purchasing@fcgov.com REV.SYM: MM 3.3 SPECIFIC REQUIREMENTS FOR DESIGN OF RADIAL -FEED Units 3.3.1 FUNCTIONAL DESCRIPTION The transformer shall be a three phase, pad mounted, radial feed safe break, "deadfront" type for use on a 13.8 kV grounded "Y" distribution system. 3.3.2 DESIGN AND CONSTRUCTION The requirements for radial -feed transformers shall be the same as those of loop -feed with the following exceptions: 3.3.2.1 RATINGS Tahlp 3 - Radial-Fppd Transfnrmpr Ratings Stock No. kVA Low Voltage Impedance Bushin T e/Confi . High Voltage Low Voltage 368-300- 006 75 208Y/120 1.9% 0 ®6 368-300- 007 75 480Y/277 1.9% 0 @6 m Per Figures 5A, & 7 of ANSI C57.1226-1992 (In -Line) EXCEPTION: high voltage bushings shall be 32 - 36 inches above the base of the transformer 01) Figures 9(a) & 9(d) of ANSI C57.12.26 - 1992 (stud with 4-hole pad) (6) Figure 8(a) of ANSI C57.1226-1992 (Staggered) 3.3.2.2 ACCESSORY CABINET The accessory cabinet shall be dimensioned in accordance with Fig. 7 of ANSI C57.12.26-1992. 4. QUALITY ASSURANCE 4.1 GENERAL 4.1.1 RESPONSIBILITY FOR INSPECTION Unless otherwise specified, the vendor is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified, the vendor may utilize his own facilities or any commercial laboratory acceptable to the City of Fort Collins. The City reserves the right to perform or witness any of the inspections set forth in this Specification where such inspections are deemed necessary. 4.1.2 TEST REPORT The manufacturer shall furnish to the purchaser certified copies of the results of all tests prior to payment. Copies shall be sent to the Design Section as well as with the invoice. Unsigned copies are not acceptable even if accompanied by a signed cover letter. The Quality Control Manager shall review and sign each test report. 4.2 TEST CONDITIONS Unless otherwise specified, testing defined in Section 4.6 shall be conducted under the following conditions: 4.2.1 REFERENCE TEMPERATURE The reference temperature to which losses, impedance, regulation, and efficiency are corrected shall be 850 C. 4.2.2 TOLERANCE ON IMPEDANCE VOLTAGE Tolerance shall be as specified in ANSI C57.12.00. 16 368-300 REV. SYM: MM 4.2.3 TOLERANCE ON IMPEDANCE VOLTAGE ON A TAP The percent departure of tested impedance voltage on any tap from tested impedance voltage at rated voltage shall not be greater than the total tap voltage range expressed as a percentage of the rated voltage. 4.3 FUNCTIONAL TESTS Functional tests shall consist of those tests and related requirements as cross referenced in Table 4 and shall be performed on each unit, except Temperature and Noise Tests which shall be performed on one unit of each design (KVA) per order. Table 4 - Functional Tests TEST TEST PARAGRAPH REQUIREMENT OR REFERENCE Examination Of Product 4.6 3.0, 3.1, 3.2. 3.3 hisspecification) Ratio 4.6 ANSI C57.12.00 Section 8 Polarity And Phase Relation 4.6 ANSI C57.12.00 Section 8 Excitation Loss 4.6 ANSI C57.12.00 Section 8 Excitation Current 4.6 ANSI C57.12.00 Section 8 Impedance & Load Loss 4.6 ANSI C57.12.00 Section 8 Temperature Tests' 4.6 ANSI C57.12.00 Section 8 Dielectric Tests 4.6.1 3.2.2.2 hisspecification) Impulse Tests 4.6.2 3.2.2.2 hisspecification) Leak Testing 4.6.3 3.2.2.8 & 3.2.2.9 hisspecification) Noise Testing* 4.6.4 3.2.2.12 hisspecification) 'One unit per design per order. 4.4 TEST METHODS -- FUNCTIONAL TESTS Each completed unit shall be inspected to determine compliance with respect to dimensions, material, workmanship, construction and marking, and routine tests on all units shall be made as specified in Section 8 of ANSI Standard C57.12.00, and in ANSI Standard C57.12.90. In addition to routine tests, the following test requirements and/or modifications shall apply. 4.4.1 DIELECTRIC TESTS Induced and applied potential Dielectric Tests shall be performed in accordance with ANSI C57.12.00 and C57.12.90. The low voltage windings shall have a test potential to ground of 10,000 volts for one minute. The test potential between high voltage windings shall be 34,000 volts for one minute. 4.4.2 IMPULSE TESTS ANSI Standard Impulse Tests shall be performed. Full Wave Impulse Test shall use a 1.5 x 50 microsecond wave. 4.4.3 LEAK TESTING The transformer tank shall be filled with oil and tested for air and oil leaks under (1) 4 psig vacuum for Y: hour, (2) 7 psig pressure for 24 hours in the sequence indicated. An alternate method of leak testing may be performed by injecting halogen gas under 10 psig and detecting leaks through the use of a halogen detector. (Note, the automaticimanual pressure relief device must be removed for this test). 4.4.4 NOISE TESTING Noise testing shall be conducted in accordance with applicable NEMA Standards. 5. PREPARATION FOR DELIVERY Transformers shall be prefilled with the appropriate amount of transformer oil and shall be shipped by open -bed truck. Units shall be packaged in such a way as to provide for ease of handling and to protect units from shipping damage. Units shall be fully palletized in four-way universal pallets with 28" minimum openings to facilitate handling from any side. Pallets shall be independent of the transformer. The Supplier shall give 24-hour notice prior to delivery for any shipments where an individual transformer weighs over 4,000 pounds. In addition to these requirements, the Supplier shall comply with any additional requirements or modifications shown on the purchase order and/or supplemental instructions. 17 368-300 REV.SYM: MM 6. DEFINITIONS AND ABBREVIATIONS • Vendor or Supplier -The manufacturer and/or manufacturers agent supplying or quoting on the specified article. • Article, Unit, Assembly - All refers to the equipment defined by this specification. • DC or dc. - Direct Current. • AC ora.c. -Alternating Current. • •C - Degree Celsius (Centigrade) • OF - Degree Fahrenheit • kV -1000 volts. • CPS or Hz - Cycles per second. • psig - Pounds per square inch gauge. • V or v - Volts. • kVA -1000 Volt-amperes. 18 368-300 REV.SYM: MM APPENDIX A Typical pad designs are shown in Figures 1A through 3A. The dimensions in inches of Figures 1A through 3A will fit the minimum compartments on transformers covered by this Specification as well as the maximum transformer envelope. 19 368-300 REV. SYM: MM - -�- - -i 55 I• — —� —1— -i I- ji' FRINoRY RK, L 6 1 I FROM �— f I —�-- �5•— -- 2]• — .-1 -�—. i9• _ i —FOU2 =7 REUAR — � LEtIGiH AND W101H —. / .c0, 7 5/Ei' Illll��;;I — — � —� -' Rates or. Pcd Mciericl — 1. Concrete roust be 3,000 psi minimum. 'l.. Maximum coarse aggregate size 1 1/2 inches. Spoce reeuiremenls for pad and primary switching cabinet will generally be 9' X 12'. -actors to be considered in locating the pad include — I. Accessibility — Tho transformer pod snail be accessible to line boom trucks equipped for the installation and removal of heavy transformers. Such accessibility shall not require intrusion on adjacent property. 2. proximity of Buildincs. Molls. Bcrriers, and/or Overhangs — in addition to the clearances required for installeeion anc removal, the minimum clearance in front of the transformer pod shell be eight (8) feel and the minimum clearance from all other sides shall be three (3) feel. If the building nos on overheng, clearance. to ;he edge of the transformer par. shed be measures horizontally from the outer edge of the overlong. Transformers through 300 KVA may be installed unCer the overhang if the vertical clearance between the pod and the overheng is at least 25 feel and the location is accessible to line 'boom trucks. 3. Codes and Standards — In addition to the above, the installation sholl conform to the National Electric Code and federal, state and city codes and standards. 2 REV NO. DATE i D`NN D.E.. APP DSNG. ENG APP DIST. APP CITY CE FORT COLLINS DING 3PHASE1 LIGHT ?CN DEPARTMENT � rRANs=cRMR PAD DESIGN SF� ery m.a.. eouuu 75 — 500 KVA wHr and POw�R 3 PHASE Figure 1A - Pad Design (75 - 500 KVA) 20 368-300 REV.SYM: MM i L I I I I I I 72 , i5I' i I PRIMARY SECON Dr 1 , 1 _L — t r— — — iRD.9t L 3• T�— !B• — I — 26• — 1 — 23• —T— 18• --I — f'Duk 0 REBAR 3•__I _ qg• _ �_ 3• / LENGTH -NI'. WIDTH —L — 3• Notes on Pad Material — Co^crete must ba 3,000 osi minimum. 2. mcMimum course aggregate size i 112 inches. Socce requirements far pod and primary switching cabinet will generally be 9' S 12'. Factors to be considered In local�9 the pod include — i. Accessibility — The tronsformer pod sno�l be accessible fo line boom trucks equipped for the instd'.Iction cnd remavcl of heavy transformers. Such accessibility shall not recuire intrusion on adjacent property. 2. Proximity of Buildings, Walls. Barriers, endlor Overhangs — !n addition to the clearances required for installation end removal, the minimurn clearance in front of the Vcns!armer pad shall be eight (8) feet and the minimum clearance from all other sides shall be four (4) feet. If the building nos an overhang, clearance to the edge of the transformer pad shcli i be measured horizontclly from the outer edge of the ovemcng. I Transformers through 300 'KVA may be installed under the overhang if the verticcl clearance between the pad cnc the overhang is at least 25 feet and the location is a^_Cessio!c to line boom trucks. 3. Codes and Standards — In addition to the obove, tie inslcllation shall conform to the National Electric Code and federal, slate and city codes and standards. I11/02/90 I I REV NO. DATE DW\ D.E. AP.- FpsiyG. E\G AP DIST. ADP 1. CITI' O ORT COLLINS O'NG P}1ASE2 f LIGHT AND POWER. DEPARTMI.EINT TRANSFORMER PAD DESiGN ! ^1 500 1000 KVA EI WOW d 0 '"°""' 3 PHASE I Figure 2A - Pad Design (500 -1000 KVA) 21 368-300 REV.SYM: MM 107 ' i — — (— — — — — — — — T . BB �• I — — — 'f� �i — J— PRINPRY ' !i' I W1t�00W //tiEC/ONOnkY L I B" I FRonr -- �T FivE uj .REBAR LENGi- AND WITH —L r 3' /— 7 5/9' — L —t— 7- I I Notes on Pod Material - 1. Concrete must be 3,000 psi minimum. 2. Mcnimum coarse aggregate size i 1/2 inches. Speco recuiremencs for nod and primary switching cabinet will generally be 9• X i2*. Fccio.s to be considered in locating the pad include - i. Accessibility - !no transformer pod shall be accessible to line boom Trucks equipped for the installation and removal of heavy transformers. Such accessibility shod not require intrusion an adjacent properly. 2. Proximity of Buildings. Walls. Barriers, and/or Overhangs - In addition to the clearances required for installation and removal, the minimum clearcnce in front of me transformer pad shall be eight (d) feel and the minimum clearance from all other side shall be four (4) fee;. If the cuilding has on overhung, clearance eo Ene edge of the transformer pad shall be measures horizontally from the outer edge of the averhong. Transformers through 300 KVA may be installed under the ov.,nang if the varticol clearcnce between the pad chat the overicng is cl leas; 25 feet and the location is cccessible to line boom ;racks. 3. Cocos and Stanca,ds - In addition in the above, the installation shell conform to the National Electric Code end Iedercl, state and city codes old standards. 1 i /02/90 1 j REV N0. i DATE om D.E. APP DSNG. =NG APP LIST. .APP CITY OF FORT COLLINS DwG 3PHASE3 LIG: ; T ANC POWER DEPAREPAR TM EN T I TRANSFORMER PAD HSIGN e..v•.. s 1000 — 2500 :VA uo.er •^' """"" l 3 PHAS. Figure 3A - Pad Design (1000-2500 KVA) 22 368-300 REV. SYM: MM APPENDIX B Transformers purchased under this Specification shall be of the make shown below. Manufacturers not listed below may submit written proposals demonstrating compliance with these Specifications for consideration of addition to the accepted manufacturer list prior to the next request for bids. In addition to inclusion on the list below, manufacturer's equipment must also satisfy all requirements of this Specification to be acceptable. TABLE 3B MANUFACTURER SERIAL NO. Cooper Power Systems All ASEA Brown-Bovari (ABB) All Howard Industries All Pauwels Transformers All The manufacturers in the following list have been conditionally approved and may bid as an alternate. The definition and intent of "Conditional Approval" of a manufacturer is to allow the City to gain some experience with the manufacturer's product. Should a conditionally approved manufacturer be the evaluated low bidder, the City reserves the right to award all, part, or none of the order to them, dependant upon the current needs of the City for that item or items. 23 368-300 REV.SYM: MM APPENDIX C The following forms for Individual and Average Transformer Losses are used by the City of Fort Collins to determine loss penalties. 1) Transformer Loss Evaluation Average Losses Form 2) Individual Transformer Loss Evaluation Form 24 368-300 City Order No. Manufacturer TRANSFORMER LOSS EVALUATION -AVERAGE LOSSES S/N Invoice KVA/Unit LINE DESCRIPTION (1) No. of units (2) Average core losses (3) Quoted core losses (4) Excess average core losses: line (2) less line (3) (5) Penalty for excess average core losses: line (1) x line (4) x $ (6) Average copper losses (7) Quoted copper losses (8) Excess average copper losses: line (6) less line (7) (9) Penalty for excess average copper losses: line (1) x line (8) x $ (10) Penalty to be assessed manufacturer: line (5) plus line (9) but not less than zero Date Prepared By: Design Engineering AMOUNT REV.SYM: MM NOTE: If any unit(s) exceeds the loss tolerances of ANSI C57.12.00, Light & Power will either reject it, include it on these averages, or calculate losses using the Individual Transformer Losses Evaluation Form, whichever is most favorable to Light and Power. 25 368-300 Fort Collins Utilities Transformer Bid Loss Data Sheet # Units 5 Bid #: 7225 Preparer Name: Size 300kVA Date: April 12, 2011 Preparer Contact Num: NL Loss Cost $ 3.90 FL Loss Cost $ 2.30 Base Bid $ I Guar No Load Guar Full Load Meet Specs? Supplier Mfr / Mfr# Each Del/Wks Loss Loss Impedance (Yes / No) Supplier 1 Mfg 1 $ 0 0 0.00 - Supplier 2 Mfr 2 $ 0 0 0.00 Supplier 3 Mfr 3 $ 0 0 0.00 Name Number Escalation (is / is not) Guar Total a factor Load Loss Directions for Bidders: 1) Fill out the information in the cells with blue text. 2) Save the file using your company name and the bid number and e-mail it to: purchasing@fcgov.corr (Example: TransformerSales_Bid_58.xls) If you are concerned about security, you may password -protect this file after you have entered your data. To protect this file, take the following steps: 1) Select Tools, Options 2) Select Security Tab 3) Type your password in the "Password to Open" field. 4) Re-enter your password to confirm it. Important! Please remember to include this.password in the bid information that will be sealed in the envelope that will be unsealed at Bid Opening. This will secure your data until the time of the bid opening. 5) Save the file and e-mail it to: purchasing@fcgov.com r—� City Order No, Manufacturer KVA/Unit LINE (1) (2) (3) (4) (5) (6) (7) INDIVIDUAL TRANSFORMER LOSS EVALUATION DESCRIPTION Tested core losses Quoted core losses Excess core losses line (1) less line (2) but not less than zero Percent difference Line (3) —,.line (2) x 100 Tested total losses Quoted total losses Excess total losses Line (5) less line (6) but not less than zero. (8) Percent difference Line (7) _ line (6) x 100 (9) Tested copper losses (10) Quoted copper losses (11) Excess copper losses Line (9) less line (10) but not less than zero. (12) Penalty for excess core losses Line (3) x $ (13) Penalty for excess copper losses Line (11) x $ S/N (14) Penalty to be assessed manufacturer Line (12) plus line (13) Date Invoice No. Prepared By: Design Engineering AMOUNT REV.SYM: MM 26 368-300 Revised 12/13/96 Special Conditions and Supplemental Instructions to Bidders Applicable to Specification 368-300 A. Data to be supplied with Bidder's Proposal The following data shall be supplied with the bidder's proposal in addition to that information required by the "Invitation to Bid" and the "Purchase Requisition". l . Impedance volts in percent (%) at full load, high voltage to low voltage at 850C 2. No load and total losses at 850C 3. Delivery in weeks 4. A statement indicating compliance with our Specification with exception or a detailed list of exceptions. 5. Escalation IS / IS NOT applicable for the transformers bid. If escalation applies, the Bidder shall indicate in his bid, the specific items or materials subject to escalation and shall provide the method and indices to be used in computing the amount thereof. Escalation occurring after acceptance, if Purchaser exercises the option to delay shipment after manufacturing is completed, will not be paid. If the above information and compliance statement are not supplied the proposal will not be evaluated An alternate bid for the total order may be submitted in addition to the unit bids. B. Loss Evaluations Loss penalties and loss evaluations will be based on the following values:, 1. No-load or excitation losses at $3.90/watt 2. Load losses at $2.30/watt C. Shipping Terms Ship F.O.B. point of destination, freight prepaid. D. Terms of Payment I . If escalation applies, the City of Fort Collins shall not be billed for escalation occurring after the promised delivery date. 2. Test reports shall accompany the invoice. If test reports do no accompany the invoice, late payment penalty charges incurred due to delays in obtaining the test reports will not be paid. Certified copies of test reports shall be sent to the Standards Engineering Section, Fort Collins Utilities - Light & Power. 3. Loss penalty credits and escalation charges shall be itemized on the invoice. Purchase Order Terms and Conditions I. COMMERCIALDEfAIS. Ta exemp6om. Bystamtethe CityofFort Collim is exempt (ram stmc and lDcal = s.Our Exemption Number is 98-01502. Federal Excise Tax Exemption Certificate of Regis ry 94-6000587 is registered with the Collector of Internal Revenue, Derwer, Colorado (Ref. Colorado Revised Statutes 1973, Chapter 39-26, 114 (a). Goods Rejected GOODS REJECTED due to failure to [neat specifications, eitherwhen shipped ordueto defects of damage in musit, may be returned to you for credit and are not to be replaced except upon receipt of written instructions from the City effect Collins. Inspection. GOODS are subject to the City of Fort Collins inspection on arrival. Final Acceptance. Receipt of the merchandise, services or equipment in response to this order can result in authorized payment on the pat of the City of Fort Collins. However, it is to be understood that FINAL ACCEPTANCE is dependent upon completion of all applicable required inspection procedures. Freight Tams. Shipments most be F.O.B., City of Fart Collins, 700 Wood SL, Fort Collins, CO 80522. unless othawise specified on this order. If permission is given o prepay freight and charge separately, the original freight bill must accompany invoice. Additional charges for packing will not be accepted. Shipment Distance. Where manufacturers have distributing points in various parts of the country, shipment is expected from the nearest distribution point to destination, and excess freight will be deducted from Invoice when shipments are nude from greater distance. Permits. Sella shall procure at sellers sole cost all necessary permits, certificates and licenses requited by all applicable laws, regulations, ordinances and riles of the state, municipality, territory or political subdivision where the work is performed, or required by any other duly constituted public authority havingjurisdiction over the work of vendor. Sella further agrees to hold the City of Fort Collins harmless from and against all liability and loss intoned by than by reason of an asserted or established violation of any such laws, regulations, ordinances, mlm and reyuiremmts. Authorization. All parties to this contract agree that the representatives are, in fact, bona fide and possess full and complete authority to bind said parties. LIMITATION OF TERMS. This Purchase Order expressly limits acceptance to the terms and conditions stated herein set forth and anysupplementary or additional terms and conditions annexed hereto or incorporated herein by reference. Any additional or different terns and conditions proposed by sells are objected to and hereby rejected. 2. DELIVERY. PLEASE ADV[SE PURCHASING AGENT immediately ifyou cannot make complete shipment to arrive on your premised delivery time as noted Time is ofthe essence. Delivery and performance must be effmed widen the time stated on the purchase order and the docmments attached hereto. No acts of the Purchasers including, without limitation, acceptance ofpartial late deliveries, shall operate as a waiver of this provision. In the event ofany delay, the Purchases shall have, in addition to other legal and equitable remedies, the option ofplacing this order elsewhere and holding the Sella liable for damages. However, the Sella shall not be liable for damages as a result of delays due to causes not reasonably foreseeable which are beyond its reasonable control and without its fault ofnegligence, such acts of God, acts ofavil or military authodfies, governmental priorities, fires, strikes, Flood, epidemics, wars or riots provided that notice of the conditions causing such delay is given to the Purchaser within five (5) days of the time when the Sella first received knowledge thereof. In the event of any such delay, the date of delivery shall be extended for the pared equal to the time actually lost by reason of the delay. 3. WARRANTY. The Sella warrants that all goods, articles, materials and work covered by this order will conform with applicable drawings, specifications, sample and/or other descriptions given, will be fit for the purposes intended, and performed with the highest degree of tare and competence in accordance with accepted standards for work of a similar nature The Sella agrees to hold the purchase hornless from any loss, damage or expense which the Purchasa may suffer or in tax on account ofthe Sellers breach ofwaranty. The Sella shall replace, repair or make good, without =1 to the purchaser, anydefms or faults arising within one (I) yearor within such longer period of time as may be prescribed by law or by the terms ofany applicable warranty provided by the Sellerafter the date of acceptance ofthe goods furnished hero nder(acceptance net to be mneisonablydclayed), resulting from imperfect or defective work done or materials famished by the Sella. Acceptance or we of goods by the Purchaser shall not constote awaivaofmy claim under this warranty. Except as otherwise provided in this purchase odes, the Sellers liability hereunder shall extend to all damages proximately caused by the breach ofany ofthe foregoing warranties orguararhtas, but such liability shall in no event include loss ofprefits or loss ofuse. NO IMPLIED WARRANTY OR MERCHANTABILITY OR OF FITNESS FOR PURPOSE SHALL APPLY. 4. CHANGES IN LEGAL TERMS. The Purchaser may crake changes to legal terms by written change order. 5. CHANGES IN COMMERCIAL TERMS. The Purchases may make any changes to the terms, other than legal terms, including additions to ordelaions from the quantities originally ordered in the specifications or drawings, by verbal or written change order. If any such change affau the amount due or the time of performance hereunder, an equitable adjustment shall be made. 6. TERMINATIONS. The Purchaser may at any time by written change order, terminate this agraxnent as to any or all potions of the goods then net shipped, subject to any equitable adjustment between the patties as to any work or materials then in progress provided that the Purchases shall not be liable for arty claims for anticipated profits on the uncompleted portion of the goods and/or work for incidental or consequential damages, and that no such adjustment be made in favor of the Sella with respect to any goods which are the Sellers standard stock No such termination shall relieve the Purchase or the Sella of any of their obligations as to any goods delivered hereunder. 7. CLA AIMS FOR ADJUSTMENT. Any claim for adjustment must be asserted within thirty (30) days from thedme thechangeor termination is ordered. S. COMPLIANCE WITH LAW. The Sella warrants that ail goods sold hereunder shall have been produced, sold, delivered and famished in strict compliance with all applicable laws and regulations to which the goods are subject The Sella shall execute and deliversuch documents as may be required to effect or evidence compliance. All laws and regulations required to be incorporated in agreements of this character are hereby incorporated herein by this reference. The Sella agrees to indemnify and hold the Purchases harmless from all costs and damages suffered by the Purchaser as a result ofthe Sellers failure to comply with such law. 9. ASSIGNMENT. Neither patty shall assign, transfer, orcom'ey this order, or any monies due or to became due hereunderwithout the prior wrnen consent ofthe otherpatty. 10. TITLE. The Sellawarmnts full, clear and unrestricted title to the Purchaser forall equipment, materials, and items furnished in performance of this agrmnent, free and clear ofany and all liens, restrictions, reservations, security interest encumbrances and claims of others. 11. NONWAIVER Failure of the Purchaser to insist upon stria performance ofthe terms and conditions hereof, failure or delay to exercise any rights or remedies provided herein or by law, failure to promptly notify the Sella in the event of a breach, the acceptance ofor payment for goods hesmndaorapproval ofthe design, shall not release the Sellaof any of the wartamies or obligations of this purchase order and shall not be deemed a waiver ofany right of the purchasato insist upon stria performance hereofor anyofits rights or remedies as to anysuch goods, regardless of when shipped, received or accepted, as to any prior or subsequent default hereunder, nor shall any purported oral modification or rescission of this purchase order by the Purchaser operate as a waiver of any of the tams hereof. 12. ASSIGNMENT OF ANTITRUST CLAIMS. Seller and the Purchaserrecognize that in actual economic practice, overcharges resulting from antitrust violations are in fact home by the Purchasa. Theretofore, for good cause and as consideration for executing this purchase order, the Sella hereby assigns to the Purchaser any and all claims it may now have or hereafter acquired under Federal or state antitrust laws for such overcharges relating to the particular goods or services purchased or acquired by the Purchaser pursuant to this purchase order. 13. PURCHASERS PERFORMANCE OF SELLERS OBLIGATIONS. Ifthe Purchase, threat the Sella to corral nonconforming or defective goods by date to be agreed upon by the Purchasa and the Sella, and the Sella tharaRa indicates its inability or unwillingness to comply, the Purchaser may cause the work to be performed by the most expeditious means available to it, and the Sella shall pay all costs associated with such work. The Sella shall release the Purchases and its contractors of any tier from all liability and claims of any nature resulting from the performance of such work. This release shall apply even in the event of fault of negligence of the party released and shall extend to the directors, oticas and employees of such party. The Seller's contractual obligations, including warranty, shall not be deemed to be reduced, in any way, because such work is performed or caused to be performed by the Purchaser. 14. PATENS. Wheneverthe Selleris required to use anydesigm, device, material orprocess covered by lots, patent, trademark orcopyright, the Sellashall indemnifyand save harmless the Purchaser from anyand all claims for infringement by reason ofthe use ofsuch patented design, device, material orprocess in connation with the comma, and shall indemnify the Purchaser for any cast, expense or damage which it may be obliged to pay by reason of such infringement at any time during the persecution orafter the completion ofthe work In case said equipmenLor arty put thereof or the intended use ofthe goods, is in such suit held to constitute infringement and the use of said equipment or part is enjoined, the Sella shall, at its own expense and at its option eithapm sere forthe PutWser the right to continue using said equipment or parts, replace the same with substantially equal but non -infringing equipment, or modify it se, it becomes non -infringing 15. INSOLVENCY. Ifthe Sellershall become insolvent or bankrupt, make an assignment for the benefit ofcreditom, appoint a receiver or trustee for any ofthe Sellers property or business, this order may forthwith becanaled by the Purchaserwithout liability. 16. GOVERNING JAW. The definitions oft. used or the interpretation ofthe agreement and therights ofall partieshereunda shall be construed underand governed by the laws ofthe State of Colorado, USA. The following Additional Conditions apply only in cases where the Sellais to pafomh work hereunder, including the services of Sellers Reprmentative(s), on the premises ofothas. 17. SELLERS RESPONSIBILITY. The Sella shall tarty on said work a Sellers own risk until the same is fully completed and accepted, and shall, in case of any accident, destruction or injury to the work and/or materials before Sellers final completion and acceptance, complete the work as Sul lees own expense and to the satisfaction ofthe Purchaser. When materials and equipment are furnished by others for installation or erection by the Sella, the Sella shall receive, unload, store and handle same a the site and become responsible therefor as though such materials and/or equipment were being furnished by the Sella under the order. 18. INSURANCE. The Sella shall, at his own expense, provide for the payment ofworkers compensation, including occupational disease benefits, to its employees employed on or in connection with the work covered by this purchase order, and/or to their dependent; in accordance with the laws ofthe state in which the work is to be done. The Sellershall also carry comprehensive general liability including, but not limited to, contractual and automobile public liability insurance with bodily injury and death limits of at least 5300,000 for any one person, 5500,000 for any one accident and property damage limit per accident of 5400,000. The Sella shall likewise require his contractors, if any, to provide for such compensation and insurance. Before myof the Sellers or his contractors employees shall do any work upon the premises of others, the Sella shall furnish the Purchaser with a cmificate that such compensation and insurance have been provided Such certificates shall specify thedate when such compensation and itmnrancehave been provided. Such certificates shall specify the datewhm such compensation and insurance expires. The Selleragras than such compensation and insurance shall be maintained until after the entire work is completed and accepted- 19. PROTECTION AGAINST ACCIDENTS AND DAMAGES. The Sella hereby assumes the entire responsibility and liability formy and all damage, loss or injuryofany, kind or naturewhasoever to persons or property caused by or resulting from the maution ofthe work provided for in this purchase order or in connection herewith. The Sella will indemnify and hold harmless the Purchaserond any or all of the Purchasers officers, agents and employees from and against any and all claims, losses, damages, charges or expenses, whether direct or indirect, and whether to persons orproperry to which the Purchasermay, be put or subject by reason of any out, action, neglect, omission or default on the part of the Sella, any of his contractors, or any of the Sellers or contractors oficerslanet agents or employees. In case any suit or other proceedings shall be brought against the Purchaser, or its officers, agents or employees at any time on account or by reason ofany act, action, neglect, omission or default ofthe Sella ofmy ofhis contractors or my of its or their officers, agents or employees as aforesaid, the Sella hereby agrees to assume the defense thereofand to defend the same at the Sellers own expense, to pay any and all costs, charges, attomeys fees and other expenses, any and all judgments that may be incurred by or obtained against the Purchase or any of its or their oficas, agents or employees in such suits or other proceedings, and in case judgment or other lira be placed upon or obtained against the property ofthe Purchaser, orsaid parties in oral a result ofsuch suits or otherprrmee7ings, the Sella will at once ease the same to be dissolved and discharged by giving bond or otherwise. The Sella and his contractors shall take all safety precautions, famish and install all guards necessary forthe prevention ofaccidmts, comply with all laws and regvla ions with regard to safety including, but without limitation, the Occupational Safety and Health Act of 1970 and all rules and regulations issued pursuant thereto. Revised 04/2 THE CITY OF FORT COLLINS Light and Power Department P.O. Box 580 Fort Collins, CO 80522 SPECIFICATION NO: 368-300 TITLE: PAD -MOUNTED COMPARTMENTAL-TYPE.THREE-PHASE DISTRIBUTION TRANSFORMERS WITH SEPARABLE INSULATED LOAD BREAK HIGH -VOLTAGE CONNECTORS APPROVED BY: Kraig Bader Standards Engineering Division Manager ORIGINATION DATE: 8/12/83 REVISED: 2/2/2005 REV. SYM: MM ITEMS COVERED BY THIS SPECIFICATION DESCRIPTION STOCK NO. SPECIFICATION NO. SERIAL 75 KVA, 208Y/120 RADIAL 368-300 -006 75 KVA, 408Y/277 RADIAL 368-300 -007 75 KVA, 208Y/120 LOOP 368-300 -008 75 KVA, 480Y/277 LOOP 368-300 -009 150 KVA, 208Y/120 LOOP 368-300 -015 150 KVA, 480Y/277 LOOP 368-300 -016 300 KVA, 208Y/120 LOOP 368-300 -030 300 KVA, 480Y/277 LOOP 368-300 -031 500 KVA, 208Y/120 LOOP 368-300 -050 500 KVA, 480Y1277 LOOP 368-300 -051 750 KVA, 208Y/120 LOOP 368-300 -075 750 KVA, 480Y/277 LOOP 368-300 -076 1000 KVA, 208Y/120 LOOP 368-300 -100 1000 KVA 480Y/277 LOOP 368-300 -101 1500 KVA, 480Y/277 LOOP 368-300 -151 2000 KVA, 480Y/277 LOOP 368-300 -201 2500 KVA, 480Y/277 LOOP 368-300 -251 2 368-300