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Home My WebLink AboutBID - 8091 TRANSFORMERS 1500 KVA PAD-MOUNTED 3-PHASEINVITATION TO BID 8091 TRANSFORMERS, 1500KVA PAD-MOUNTED, 3 PHASE BID OPENING: 3:00 P.M. (our clock), APRIL 3, 2015 The City of Fort Collins is requesting bids from firms for 1500kVA, pad-mounted, 3 Phase, compartmental type transformers. Bid submission via email is preferred. Bids shall be submitted in Microsoft Excel, Word or PDF format and e-mailed to: purchasing@fcgov.com. If electing to submit hard copy bids instead, three (3) copies, will be received at the City of Fort Collins' Purchasing Division, 215 North Mason St., 2nd floor, Fort Collins, Colorado 80524. Bids will be received before 3:00 p.m. (our clock), April 3, 2015 and referenced as Bid No. 8091. 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. The City encourages all disadvantaged business enterprises to submit bid in response to all invitations and will not be discriminated against on the grounds of race, color, national origin. Any questions or inquiries regarding this bid should be directed to: Pat Johnson, CPPB, Senior Buyer at (970) 221-6816 or pjohnson@fcgov.com. A copy of the Bid may be obtained by downloading the RFP from the Rocky Mountain E-Purchasing System at www.rockymountainbidsystem.com. 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 Bids may be withdrawn up to the date and hour set for closing.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. Financial Services Purchasing Division 215 N. Mason St. 2nd Floor PO Box 580 Fort Collins, CO 80522 970.221.6775 970.221.6707 fcgov.com/purchasing 8091 Transformer 1500 kVA Pad-Mounted Page 1 of 32 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. New Vendors: The City requires new vendors receiving awards from the City to fill out and submit an IRS form W-9 and to register for Direct Deposit (Electronic) payment. If needed, the W- 9 form and the Vendor Direct Deposit Authorization Form can be found on the City’s Purchasing website at www.fcgov.com/purchasing under Vendor Reference Documents. 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. 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 your firm'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 will be posted online at www.rockymountainbidsystem.com. Gerry S. Paul Director of Purchasing and Risk Management 8091 Transformer 1500 kVA Pad-Mounted Page 2 of 32 FIRM NAME:_____________________________ CITY OF FORT COLLINS 8091 TRANSFORMERS, 1500KVA PAD-MOUNTED, 3 PHASE WE HEREBY ENTER OUR BID FOR THE CITY OF FORT COLLINS' REQUIREMENTS FOR TRANSFORMERS, 1500KVA PAD-MOUNTED, 3 PHASE PER THE BID INVITATION AND ANY REFERENCED SPECIFICATIONS. QUANTITY: DESCRIPTION: 2 ea. T3000151 TRANSFORMER, 1500 kVA PAD-MOUNTED COMPARTMENTAL TYPE, THREE PHASE DISTRIBUTION WITH SEPARABLE INSULATED LOAD BREAK HIGH VOLTAGE CONNECTORS. HIGH VOLTAGE RATING: 13200 GRDY/7620. LOW VOLTAGE RATING: 480Y/277. SERIAL NUMBER 151 TO BE IN ACCORDANCE WITH SPECIFICATION #368-300-151, REVISION PP. Please complete the Excel spreadsheet issued separately for bid submittal. The spreadsheet MUST be submitted in Excel format only. 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 items 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 submit with your bid documents. 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 is completed, will not be paid. Delivery lead time 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. 8091 Transformer 1500 kVA Pad-Mounted Page 3 of 32 Awards from this bid will be based primarily on the evaluated bid price. Delivery lead times, escalation and exceptions taken will also be considered. The City of Fort Collins reserves the right to split the bid award in whatever percentages are most advantageous to the City. Future orders of Transformers, 1500kVA, Pad-Mounted, 3 Phase may be authorized, at the option of the City, from this bid for a period of five years after bid closing date. Satisfactory pricing and delivery is required for future orders based on this bid. Pages 3 and 5 of this bid document comprise the bid submittal, along with the Excel Spreadsheet. Failure to submit any of these in the format requested may cause the submittal to be deemed incomplete and may be subject to rejection. 8091 Transformer 1500 kVA Pad-Mounted Page 4 of 32 EXHIBIT A BID ACKNOWLEDGEMENT Contractor hereby acknowledges receipt of the City of Fort Collins Utilities’ Request for Bids for the Transformers and acknowledges that it has read and agrees to be fully bound by all of the terms, conditions and other provisions set forth in the Bid. Additionally, the Contractor hereby makes the following representations to Utilities: a. All of the statements and representations made in this bid are true to the best of the Contractor’s knowledge and belief. b. The Contractor has obtained all necessary authorizations and approvals that will enable the Contractor to commit to the terms provided in this bid submittal. c. This bid submittal is a firm and binding offer, for a period of 45 days from the date hereof. d. I further agree that the method of award is acceptable to my company. e. I acknowledge receipt of addenda. Contractor Firm Name: Physical Address: Remit to Address: Phone: Authorized Agent of Firm Name: Signature of Authorized Agent: Primary Contact for Project: Title: Email Address: Phone: Cell Phone: 8091 Transformer 1500 kVA Pad-Mounted Page 5 of 32 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 UPDATED BY: Adam Bromley Senior Electrical Engineer APPROVED BY:______________________________________ Kraig Bader Standards Engineering Division Manager ORIGINATION DATE: 8/12/83 REVISED: 5/9/2014 8091 Transformer 1500 kVA Pad-Mounted Page 6 of 32 REV. SYM: PP 2 368-300 ITEMS COVERED BY THIS SPECIFICATION DESCRIPTION STOCK NO. SPECIFICATION NO. SERIAL 75 KVA, 208Y/120 RADIAL 368-300 -006 75 KVA, 480Y/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, 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 8091 Transformer 1500 kVA Pad-Mounted Page 7 of 32 REV. SYM: PP 3 368-300 REVISION DESCRIPTIONS REVISION DESCRIPTION (Previous on file) APPROVED REVISION FF:  Add Paragraph 5.2.2.9.3: pentahead locking bolts  Paragraph 3.2.2.13.1: add glossy requirement. Tim Sagen Susan Coram 10-18-95 REVISION GG:  Title page: Remove revised date  Paragraph 4.4 and Table 2A: Change Temperature Tests and Noise Test from every unit to one unit of design. Susan Coram Tim Sagen 9-22-95 REVISION HH:  GE removed from Appendix B Opal Dick Tim Sagen 12-13-96 REVISION II:  Add paragraph 3.2.2.10 OVERCURRENT PROTECTION and renumber remaining paragraphs in section 3.2  Revise Fig. 1 to reflect a "V" configuration for the primary bushing arrangement vs. an in-line arrangement.  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 Opal Dick Tim Sagen 6/3/99 REVISION JJ  Reformat and converted to MS Word, delete List of Active Pages Bill Bray Tim Sagen 9 /14 / 2000 REVISION KK  Added drawing 1a to describe cable accessory parking stand detail, revise to reflect current editions of national standards, change impedance on 368-300-009 from 1.7% to 1.9%. Kraig Bader Tim Sagen 9 / 11 / 2001 REVISION LL  Change fusing from oil-immersed current sensing weak link cartridge to a current 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” Kraig Bader 4/2/2004 Revision MM  Change clause 3.2.2.10 to specify current sensing bay-o-net fuse link by size and 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 REV. SYM: PP 4 368-300  Added reference to IEEE C57.12.28 – Enclosure Integrity and requirement for an additional enclosure security design test (See section 3.1.3.2).  Added IEEE C57.12.37 – Electronic Reporting of Distribution Transformer Test Data as a reference standard. Amended section 5.1.2 to include details for the application of IEEE C57.12.37.  Changed requirement for operation of compartment doors so that access to the low- voltage compartment is allowed only after the door to the high-voltage compartment has been opened in order to reduce hazards associated with arc flash.  Added section on DOE Energy Efficiency Requirements.  Changed Table 1 to include Impedance Tolerances; deleted bushing arrangement from Table and inserted description and reference in Section 3.2.2.5.3.  Amended section 3.2.2.7.6 to specify a pressure relief device that includes detection and indication of internal transformer faults. The approved device is manufactured by IFD Corporation.  Changed Table 3 to include Impedance Tolerances; deleted bushing arrangement from Table and inserted description and reference in Section 3.3.2.2.  Moved and updated section on Losses (now Section 4) to include new required information to be submitted by manufacturers during the bid process. Additional information to be supplied includes expected winding’s stray losses and losses associated with auxiliary devices such as fuses, breakers, switches, etc. Also updated Special Conditions and Supplemental Instructions to Bidders with new required losses information.  Added Central Moloney to the Conditionally Approved Manufacturers list.  Deleted Individual Transformer Loss Evaluation Form. Typically, orders include more than one unit and the average form is used. Fort Collins Utilities has always and continues to reserve the right to calculate losses and assess penalties individually, if favorable to Fort Collins Utilities.  Added Special Conditions and Supplemental Instructions to Bidders to the end of this specification. Previously, this had been submitted to Bidders separately. This merge helps to maintain consistency among transformer specifications. Revision PP  Removed requirement for operation of compartment doors so that access to the low-voltage compartment is allowed only after the door to the high-voltage compartment has been opened in order to reduce hazards associated with arc flash. Changed back to previous language to have low-voltage door opened first. New version of C57.12.34, due to NESC requirements, will alleviate arc flash concerns.  Added requirement for silicon steel cores. Fort Collins is not currently specifying amorphous core technology at this time, but may entertain amorphous core proposals when the “No load losses” and “Load Losses” per watt are updated to reflect the current electric system in Fort Collins.  Added 3.2.2.5.4 to include low-voltage terminal supports on all low-voltage terminals in order to support cantilever weights that extend out farther than spade connectors specified in IEEE C57.12.34, Figure 15A.  Updated Figure 1 to clarify the minimum dimensions inside compartment.  Updated Figure 6 to reflect dimensions of transformer pads that are currently being specified and purchased.  Deleted CT mounting provisions from and added the IFD/PRV to Table 1A – Accessory Equipment.  Deleted reference to Figure 8 of IEEE C57.12.34-2009 for radial feed transformers. This reference is out of alignment with our requirement for low voltage bushing arrangements for loop feed (reference is to Figure 5 of this specification). There is no reason they should not be the same as we are utilizing the same set-screw connectors that bolt onto our spade terminals.  Added requirement for tested stray loss value in the “Reserved Space” field to electronic test data section 5.1.2.  Updated Transformer Pad figures in Appendix A with our current pad specifications. Adam Bromley REV. SYM: PP 5 368-300 TABLE OF CONTENTS ITEMS COVERED BY THIS SPECIFICATION ................................................................................................................................ 2 REVISION DESCRIPTIONS ................................................................................................................................................................. 3 1. SCOPE .................................................................................................................................................................................................. 6 2. APPLICABLE DOCUMENTS ........................................................................................................................................................... 6 3. REQUIREMENTS ............................................................................................................................................................................... 6 3.1 GENERAL REQUIREMENTS FOR DESIGN ................................................................................................................................ 6 3.2 SPECIFIC REQUIREMENTS FOR DESIGN OF LOOP -FEED UNITS ........................................................................................ 8 3.3 SPECIFIC REQUIREMENTS FOR DESIGN OF RADIAL -FEED UNITS ................................................................................. 17 4. LOSSES .............................................................................................................................................................................................. 17 5. QUALITY ASSURANCE ................................................................................................................................................................. 18 5.1 GENERAL ..................................................................................................................................................................................... 18 5.2 TEST CONDITIONS ..................................................................................................................................................................... 18 5.3 FUNCTIONAL TESTS .................................................................................................................................................................. 18 5.4 TEST METHODS -- FUNCTIONAL TESTS ................................................................................................................................ 19 6. PREPARATION FOR DELIVERY ................................................................................................................................................. 19 7. DEFINITIONS AND ABBREVIATIONS ....................................................................................................................................... 20 APPENDIX A – TRANSFORMER PAD DESIGNS .......................................................................................................................... 21 APPENDIX B – APPROVED MANUFACTURERS ......................................................................................................................... 25 APPENDIX C – TRANSFORMER LOSS EVALUATION ............................................................................................................... 26 SPECIAL CONDITIONS AND SUPPLEMENTAL INSTRUCTIONS TO BIDDERS APPLICABLE TO SPECIFICATION 368-300 .................................................................................................................................................................................................... 27 8091 Transformer 1500 kVA Pad-Mounted Page 10 of 32 REV. SYM: PP 6 368-300 SPECIFICATION FOR PAD-MOUNTED COMPARTMENTAL-TYPE, THREE-PHASE DISTRIBUTION TRANSFORMERS WITH SEPARABLE INSULATED LOAD BREAK HIGH-VOLTAGE CONNECTORS 1. SCOPE 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 Institute of Electrical and Electronics Engineers (IEEE) requirements for pad- mounted, compartmental-type, self-cooled, three-phase distribution transformers, 5 MVA and smaller; High Voltage, 34.5 kV nominal system voltage and below; Low Voltage, 15 kV nominal system voltage and below, C57.12.34. 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.  IEEE C57.12.00 - Standard for General Requirements for Liquid-Immersed Distribution, Power, and Regulating Transformers  IEEE C57.12.28 – Standard for Pad-Mounted Equipment – Enclosure Integrity  IEEE C57.12.34 – Pad-mounted, compartmental-type, self-cooled, three-phase distribution transformers, 5 MVA and smaller;, high voltage 34.5 kV nominal system voltage and below; low voltage, 15 kV nominal system voltage and below  IEEE C57.12.37 – Electronic Reporting of Test Data  IEEE C57.12.70 - Terminal markings and connections for distribution and power transformers  IEEEC57.12.80 - Terminology for power and distribution transformers  IEEE C57.12.90 - Distribution, power, and regulating transformers, and shunt reactors, test code for  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 Standards identified herein, 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) IEEE C57.12.34 c) Other applicable ANSI, IEEE, and NEMA Standards. 3.1.2 KILOVOLT-AMPERE TEMPERATURE RATINGS Kilovolt-ampere ratings are continuous and are based on not exceeding either a 65°C average winding temperature or an 80°C 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 Transformers shall conform to IEEE Standard for Pad-Mounted Equipment – Enclosure Integrity, C57.12.28. 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 8091 Transformer 1500 kVA Pad-Mounted Page 11 of 32 REV. SYM: PP 7 368-300 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 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 In addition to the enclosure security design tests listed in Section 4.3.1 of IEEE C57.12.28, the manufacturer shall perform an “Operation test”. The unit shall be lifted, utilizing provided lifting lugs, at least one meter in accordance with the manufacturer’s standard lift instructions and then set again on a flat surface. The doors shall be easily opened, closed, latched and locked without requiring adjustments to the cabinet, latch mechanism and/or enclosure door(s). All of the door latch points must fully engage when the door is closed. 3.1.3.3 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. 3.1.3.4 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. 3.1.3.5 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. 3.1.3.6 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 ENERGY EFFICIENCY Transformers shall be designed to meet the minimum energy efficiency ratings defined in the United States Department of Energy October 12, 2007 Final Rule: 10 CFR Part 31, Energy Conservation Program for Commercial Equipment: Distribution Transformers Energy Conservation Standards. 3.1.5 SERVICE CONDITIONS Service conditions shall be as defined in paragraph 4.1 of IEEE 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. 8091 Transformer 1500 kVA Pad-Mounted Page 12 of 32 REV. SYM: PP 8 368-300 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 13.2 kV grounded “Y” distribution system. 3.2.2 DESIGN AND CONSTRUCTION 3.2.2.1 RATINGS Table 1 - Loop-Feed Transformer Ratings Stock No. kVA Low Voltage Nominal Impedance Impedance Tolerance1 Minimum Maximum 368-300- 008 75 208Y/120 1.9% 1.71% 2.09% 368-300- 009 75 480Y/277 1.9% 1.53% 1.87% 368-300- 015 150 208Y/120 2.1% 1.89% 2.31% 368-300- 016 150 480Y/277 2.1% 1.89% 2.31% 368-300- 030 300 208Y/120 2.5% 2.25% 2.75% 368-300- 031 300 480Y/277 2.5% 2.25% 2.75% 368-300- 050 500 208Y/120 3.04% 2.81% 3.27% 368-300- 051 500 480Y/277 3.04% 2.81% 3.27% 368-300- 075 750 208Y/120 5.75% 5.32% 6.18% 368-300- 076 750 480Y/277 5.75% 5.32% 6.18% 368-300- 100 1000 208Y/120 5.75% 5.32% 6.18% 368-300- 101 1000 480Y/277 5.75% 5.32% 6.18% 368-300- 151 1500 480Y/277 5.75% 5.32% 6.18% 368-300- 201 2000 480Y/277 5.75% 5.32% 6.18% 368-300- 251 2500 480Y/277 5.75% 5.32% 6.18% 1 Tolerances for impedance voltage shall be consistent with requirements in section 9.2 of IEEE C57.12.00-2010. 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 Section 5.10 of IEEE C57.12.00-2010. 3.2.2.2.3 The unit shall withstand test voltages in accordance with IEEE C57.12.00 and impulse tests in accordance with NEMA Standards for Transformers, Publications No. TR1. 3.2.2.3 TRANSFORMER CORE 3.2.2.3.1 A five-legged core-coil assembly or three separate core-coil assemblies shall be employed. The use of three-legged designs is expressly prohibited. 3.2.2.3.2 The transformer core material shall be constructed with a silicon steel material. All core materials that do not meet that requirement shall be specifically approved in writing by Fort Collins Utilities Engineering Standards Division. 3.2.2.4 HIGH VOLTAGE TAPS A no-load tap changer with external operating handle shall provide two 2 ½ full capacity taps above and below normal. The operating handle shall be mounted in the primary compartment. 8091 Transformer 1500 kVA Pad-Mounted Page 13 of 32 REV. SYM: PP 9 368-300 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 the cover. Welded bushings and wells are expressly prohibited. 3.2.2.5.2 High-voltage bushing wells shall be compatible with 200A load-break interface 8.3/14.4 kV bushings well inserts in accordance with IEEE Std. 386. It is not required that the bushing well insert be supplied with the transformer. 3.2.2.5.3 Low voltage bushing arrangement and spacing shall be “staggered”, as shown in Fig. 5 of this Specification. Transformers 500 kVA and smaller shall have low voltage terminals meeting the requirements contained in Figure 15B of IEEE C57.12.34-2009; there shall also be a separate spade included that meets requirements for the respective size of transformer contained in Figure 15A of IEEE C57.12.34-2009. Transformers larger than 500 kVA shall have low voltage terminals meeting the requirements contained in Figure 15A of IEEE C57.12.34-2009. 3.2.2.5.4 In addition to the low-voltage terminal requirements in 3.2.2.5.3, all low voltage terminals equipped with spades shall be furnished with additional support. A manufacturer designed support shall be attached at the end that is the farthest from the tank wall and mounted in such a way that it will not interfere with the use of any of the holes of the spade or protrude beyond the width of the spade that would interfere with set-screw connectors attached to and extending beyond the length of the spade. 3.2.2.5.5 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. 3.2.2.5.6 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 IEEE 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 steel 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 1½ inches minimum, 3½ 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. 8091 Transformer 1500 kVA Pad-Mounted Page 14 of 32 REV. SYM: PP 10 368-300 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 high-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 IEEE C57.12.00-2010, 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. 3.2.2.7.6 A non-resettable device which detects and provides external indication of internal transformer faults, as well as incorporating automatic pressure relief functionality shall be provided. The pressure relief device shall meet the following requirements:  ¼” 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 a static force of 25 pounds for 1 minute without permanent deformation. The valve shall also withstand for 1 minute a static force of 100 lbf applied normal to its longitudinal axis at the outermost extremity of the body.  Bug shield to prevent entry of dust, moisture, and insects before and after the valve has operated.  Cracking pressure of 10 ± 2 psig.  Resealing pressure of 6 psig minimum.  Zero leakage from resealing pressure to –8 psig.  Minimum flow rate of 35 SCFM at 15 psig. The approved manufacturer for this device is IFD Corporation. Other devices meeting the requirements defined in this specification shall be specifically approved in writing by Fort Collins Utilities Engineering Standards Division. 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 –32°C 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 IEEE C57.12.34-2009, Section 8.10, except that a 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 Section 8.11 of IEEE C57.12.34-2009. 3.2.2.9.3 Locking bolts shall be pentahead style. 8091 Transformer 1500 kVA Pad-Mounted Page 15 of 32 REV. SYM: PP 11 368-300 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 – Fusing Requirements Stock Number kVA Capacity Expulsion Fuse Continuous Current Rating (Part Number*) Current Limiting Fuse Continuous Current Rating (Part Number*) 368-300-008 368-300-009 75kVA 10A (4000353C06) 30A 3544030M61M 368-300-015 368-300-016 150kVA 15A (4000353C08) 40A (3544040M61M) 368-300-030 368-300-031 300kVA 25A (4000353C10) 65A (3544065M61M) 368-300-050 368-300-051 500kVA 40A (4000353C12) 100A (3544100M71M) 368-300-075 368-300-076 368-300-100 368-300-101 750kVA 750kVA 1000kVA 1000kVA 65A (4000353C14) 125A (3544125M71M) 368-300-151 368-300-201 1500kVA 2000kVA 140A (4000353C17) 250A : Parallel 125A fuses REV. SYM: PP 12 368-300 Figure 1 - Accessory compartment & Bushing Dimensions (Config. 1) 8091 Transformer 1500 kVA Pad-Mounted Page 17 of 32 REV. SYM: PP 13 368-300 Figure 1A – Cable Accessory Parking Stand Detail Figure 2 (Config. 2) - DELETED 7/92 Figures 3 & 4 - DELETED 11/00 Ref. now to: 3.2.2.5.3 and 3.2.2.5.4 of this Specification 8091 Transformer 1500 kVA Pad-Mounted Page 18 of 32 REV. SYM: PP 14 368-300 4.0" MIN B 6" RADIUS TYPICAL 3 PLACES 4.0" MIN A 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. 8 10 6 480/277, 208Y/120 6 ALL 750-2500 225-500 75-150 LOW VOLTAGE A B RATINGS KVA RATINGS AA 4.75 8 ALL 8091 Transformer 1500 kVA Pad-Mounted Page 19 of 32 REV. SYM: PP 15 368-300 KVA SERIAL PAD DIMENSIONS (inches) A B C D E F 75 -006 thru –009 79 56 52 22 16 65.5 150 -015 79 56 52 22 16 65.5 150 -016 79 56 52 22 16 65.5 300 -030 79 56 52 22 16 65.5 300 -031 79 56 52 22 16 65.5 500 -050 79 56 52 22 16 65.5 500 -051 79 56 52 22 16 65.5 750 -076, -075 84 73 52 22 16 68 1000 -101, -100 84 73 52 22 16 68 1500 -151 107 88 52 22 16 79.5 2000 -201 107 88 52 22 16 79.5 2500 -251 107 88 52 22 16 79.5 Fig. 6 – Pad Dimensions A B E D C F 8091 Transformer 1500 kVA Pad-Mounted Page 20 of 32 REV. SYM: PP 16 368-300 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 1” 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 Internal Fault Detector (IFD) with manual/ automatic pressure relief valve. See section 3.2.2.7.6. X X X 8091 Transformer 1500 kVA Pad-Mounted Page 21 of 32 REV. SYM: PP 17 368-300 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 13.2 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 Table 3 - Radial-Feed Transformer Ratings Stock No. kVA Low Voltage Nominal Impedance Impedance Tolerance1 Minimum Maximum 368-300- 006 75 208Y/120 1.9% 1.71% 2.09% 368-300- 007 75 480Y/277 1.9% 1.71% 2.09% 1. Tolerances for impedance voltage shall be consistent with requirements in section 9.2 of IEEE C57.12.00-2010. 3.3.2.2 BUSHING WELLS AND TERMINALS The number, location, and arrangement of bushing wells, terminals and parking stands shall be as shown in Figures 12 and 13A of IEEE C57.12.34-2009. EXCEPTION: high voltage bushings shall be 32 - 36 inches above the base of the transformer. 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 I2R losses at the specified rates. If tested losses exceed quoted losses but are within the tolerances of paragraph 9.3, IEEE C57.12.00-2010, 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 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, IEEE C57.12.00-2010, 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. Quoted losses submitted by manufacturers shall include the following:  Core material type  No load losses  Full load losses – it shall be clearly stated whether this number includes the winding’s expected stray losses and losses associated with auxiliary devices  Winding’s expected stray losses related to quoted transformer design  Losses associated with auxiliary devices such as fuses, breakers, switches, etc. All quoted loss values shall be corrected to a reference temperature of 85˚C. Quotations submitted during the bid process without the required losses information shall be deemed unresponsive and are subject to rejection by the City of Fort Collins. 8091 Transformer 1500 kVA Pad-Mounted Page 22 of 32 REV. SYM: PP 18 368-300 5. QUALITY ASSURANCE 5.1 GENERAL 5.1.1 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 Utilities. The City reserves the right to perform or witness any of the inspections set forth in this Specification where such inspections are deemed necessary. 5.1.2 TEST REPORT The manufacturer shall furnish to the purchaser, prior to payment, certified copies of the results of all tests as well as electronic reports including transformer test data as specified in IEEE C57.12.37. Unsigned copies of the certified test reports are not acceptable even if accompanied by a signed cover letter. The manufacturer’s Quality Control Manager shall review and approve each test report. The electronic reports shall include the standard data set and the extended data set as specified in sections 4.2 and 4.3, respectively, of IEEE C57.12.37-2006. If the manufacturer performs resistance testing that yields a tested stray loss value, this value shall be reported in the “Reserved Space” field specified in section 4.3.12 of IEEE C57.12.37-2006. These reports shall be formatted in a comma delimited file as specified in section 5.3 of IEEE C57.12.37-2006. These reports shall be sent to the Material Control Section along with the invoice, and to Engineering Standards Division via Electronic Mail (E-mail). E-mail addresses shall be provided to manufacturer upon award of bid. 5.2 TEST CONDITIONS Unless otherwise specified, testing defined in Section 4.6 shall be conducted under the following conditions: 5.2.1 REFERENCE TEMPERATURE The reference temperature to which losses, impedance, regulation, and efficiency are corrected shall be 85° C. 5.2.2 TOLERANCE ON IMPEDANCE VOLTAGE Tolerance shall be as specified in Tables 1 and 3. 5.2.3 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. 5.3 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 (This specification) Ratio 4.6 IEEE C57.12.00 Section 8 Polarity And Phase Relation 4.6 IEEE C57.12.00 Section 8 Excitation Loss 4.6 IEEE C57.12.00 Section 8 Excitation Current 4.6 IEEE C57.12.00 Section 8 Impedance & Load Loss 4.6 IEEE C57.12.00 Section 8 Temperature Tests* 4.6 IEEE C57.12.00 Section 8 Dielectric Tests 4.6.1 3.2.2.2 (This specification) Impulse Tests 4.6.2 3.2.2.2 (This specification) Leak Testing 4.6.3 3.2.2.8 & 3.2.2.9 (This specification) Noise Testing* 4.6.4 3.2.2.12 (This specification) *One unit per design per order. 8091 Transformer 1500 kVA Pad-Mounted Page 23 of 32 REV. SYM: PP 19 368-300 5.4 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 IEEE Standard C57.12.00, and in IEEE Standard C57.12.90. In addition to routine tests, the following test requirements and/or modifications shall apply. 5.4.1 DIELECTRIC TESTS Induced and applied potential Dielectric Tests shall be performed in accordance with IEEE 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. 5.4.2 IMPULSE TESTS IEEE Standard Impulse Tests shall be performed. Full Wave Impulse Test shall use a 1.5 x 50 microsecond wave. 5.4.3 LEAK TESTING The transformer tank shall be filled with oil and tested for air and oil leaks under (1) 4 psig vacuum for ½ 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). 5.4.4 NOISE TESTING Noise testing shall be conducted in accordance with applicable NEMA Standards. 6. 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 two-way pallets or four-way universal pallets with 30" minimum openings (to accommodate minimum fork spacing) and loaded on the truck for side removal. 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 5,000 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. 8091 Transformer 1500 kVA Pad-Mounted Page 24 of 32 REV. SYM: PP 20 368-300 7. 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 d.c. - 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.  kVA - 1000 Volt-amperes. 8091 Transformer 1500 kVA Pad-Mounted Page 25 of 32 REV. SYM: PP 21 368-300 APPENDIX A – Transformer Pad Designs Transformer Pad Specifications are shown in Figures 1A through 3A and correspond to Fort Collins Utilities specifications 368-400-01, 368-400-02, and 368-400-03 respectively. 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. 8091 Transformer 1500 kVA Pad-Mounted Page 26 of 32 REV. SYM: PP 22 368-300 Figure 1A - Pad Design (75 - 500 KVA) 8091 Transformer 1500 kVA Pad-Mounted Page 27 of 32 REV. SYM: PP 23 368-300 Figure 2A - Pad Design (750 - 1000 KVA) 8091 Transformer 1500 kVA Pad-Mounted Page 28 of 32 REV. SYM: PP 24 368-300 Figure 3A - Pad Design (1500-2500 KVA) 8091 Transformer 1500 kVA Pad-Mounted Page 29 of 32 REV. SYM: PP 25 368-300 APPENDIX B – Approved Manufacturers 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. Approved manufacturers must have constructed and submitted prototype units for inspection and deemed satisfactory by the Fort Collins Utilities Electric Department. APPROVED MANUFACTURERS Cooper Power Systems ASEA Brown-Bovari (ABB) Howard Industries CG Power Systems 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. In order to be added to the Conditionally Approved List, the manufacturer shall submit drawings demonstrating that their design meets technical and dimensional requirements contained within this Specification. 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. CONDITIONALLY APPROVED MANUFACTURERS Central Moloney 8091 Transformer 1500 kVA Pad-Mounted Page 30 of 32 REV. SYM: PP 26 368-300 APPENDIX C – Transformer Loss Evaluation TRANSFORMER LOSS EVALUATION - AVERAGE LOSSES City Order No. _____________________________ S/N __________________________________ Manufacturer _____________________________ Invoice No. __________________________ KVA/Unit ________________________________ LINE DESCRIPTION AMOUNT (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 NOTE: If any unit(s) exceeds the loss tolerances of IEEE C57.12.00, Utilities Electric Department will (1) either reject it, (2) include it on these averages, or (3) calculate losses and assess penalties individually, whichever is most favorable to Utilities Electric Department. 8091 Transformer 1500 kVA Pad-Mounted Page 31 of 32 REV. SYM: PP 27 368-300 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". 1. Impedance volts in percent (%) at full load, high voltage to low voltage at 85°C 2. No load losses, full load losses, total losses, expected winding’s stray losses, auxiliary devices’ losses all corrected to a reference of 85°C. Please see Section 4 – Losses for more information. 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 1. If escalation applies, the City of Fort Collins shall not be billed for escalation occurring after the promised delivery date. 2. Electronic test reports as describe in Section 5.1.2 sent via E-mail shall accompany the invoice sent to the Material Control Section. If test reports do not accompany the invoice, late payment penalty charges incurred due to delays in obtaining the test reports will not be paid. Electronic test reports shall also be sent via E-mail to Engineering Standards Division, Fort Collins Utilities - Light & Power. 3. Loss penalty credits and escalation charges shall be itemized on the invoice. 8091 Transformer 1500 kVA Pad-Mounted Page 32 of 32 (3544125M71M) 368-300-251 2500kVA 125A Hi-Amp OL Link C05CB 3 250A : 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. 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 Figure 16(b) of IEEE C57.12.34-2009. 8091 Transformer 1500 kVA Pad-Mounted Page 16 of 32 Kraig Bader 8 May 2014 8091 Transformer 1500 kVA Pad-Mounted Page 9 of 32 Kraig Bader 2/2/2005 Revision NN  Change clause 3.2.2.5 to better clarify that the transformer manufacture need only provide bushing wells that are compatible with IEEE 386 bushing well inserts, not the inserts themselves. Kraig Bader 24 August 2010 Revision OO  Updated all references from ANSI to IEEE standards. The standards development process utilized by IEEE is approved by ANSI, so they do not explicitly place their name on each IEEE standard anymore.  Updated references to IEEE C57.12.26, which is no longer active, to now reference IEEE C57.12.34 and the corresponding sections and figures within the new standard. Adam Bromley Kraig Bader 2 April 2013 8091 Transformer 1500 kVA Pad-Mounted Page 8 of 32