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Home My WebLink About102795 WESCO DISTRIBUTION INC - PURCHASE ORDER - 6604944„ rH �Pg 1iZ hu 7 0 ,i' In, City of Fort Collins Page Number: 1 City of Fort Collins Date: 08/04/06 Purchase Order Number: 6604944 Delivery Date: 08/04/06 Buyer: DICK,OPAL Purchase Order number must appear on invoices, packing lists, labels, bills of lading, and all correspondence. Note: Line Oty UOM Description Unit Price Extended Price 1 6 EA T1200180; 167kVA transformer 2401120; single phase padmount T1200180 YARD TRANSFORMER, 167 kVA PAD -MOUNTED COMPARTMENTAL TYPE, SINGLE PHASE DISTRIBUTION WITH SEPARABLEINSULATED LOAD BREAK HIGH VOLTAGE CONNECTORS. HIGH VOLTAGE RATING: 13200 GRDY/7620. LOW VOLTAGE RATING: 2401120. SERIAL NUMBER 180 TO BE IN ACCORDANCE WITH SPECIFICATION #368-120-180, REVISION FF 3,757.000 22,542.00 Opal Dick- 368dash120.pdf _Page 7 REV. SYM: FF 3.2.2.6 ACCESSORY CABINET 3.2.2.6.1 The accessory cabinet shall consist ofa compartment containing high -and low -voltage bushings constructed in accordance with applicable ANSI spedficatons, including ANSI C57.12.28. Dimensions shall be in accordance with Fig. 1 of this specification. 3.2.2.6.2 Cabinet doors shall be hinged, removable, lockable, and ofsu fident size to provide adequate working space when removed or open. Unlocking the padlock shall permit access to both the high- and low - voltage terminations. Stainless steel hinge pins shall be provided. 3.2.2.7 ACCESSORY EQUIPMENT Accessory equipment shall be provided in accordance with the following details: 3.2.2.7.1 Deleted 3.2.2.7.2 The transformer base shall be arranged for rolling in two directions: Parallel to and at right angles to the center line of the high -voltage bushings. 3.2.2.7.3 Lilting lugs or bosses for screw -in lift bolts shall be provided. These lugs or bosses shall be adequate strength and size and arranged on the tank to provide a suitable balanced 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 atthe base ofthe accessory compartment to provide means for mounting the unit on the pad. (Fig. land Figure 2, Appendix B). 3.2.2.7.5 Terminal designations are shown in Figure 1 and Figure 2, Appendix B. The identification of terminal connections shall be shown on the instruction nameplate. Instruction nameplate shall be located in the low -voltage side and shall be readable with cables in place. Where the nameplate is mounted on a removable part, the manufacturer's name and transforms r serial number shall be permanently affixed to a non -removable part Instruction nameplate shall contain the information specified in 5.12 of ANSI C57.12.00-1987, Nameplate A. Also, on the nameplate, or label affixed near it, the manufacturer shall indicate that the dielectric fluid contains less than 1 ppm PCB. 3.2.2.7.6 A suitable marking inside ofthe tank shall indicate the correct oil level at 25•C. 3.2.2.7.7 An automatic pressure relief device shall be located within the compartment This device shall meet the following requirements. Y." NI'T or larger male Inlet Pat. B(posed parts of weather and corrosion resistant materials. Norrdeterioratin g gasket and o-ring material. Manual pull ring able to withstand 25 pound force minimum. Body able to withstand 100 pound shear force minimum. • Bug shield. Cracking pressure of 10 t 2 psig. Resealing pressure of 8 t 2 psig. Zero leak rate from 8 f 2 psig to -8 psig. • Minimum flow rate of 35 SCFM at 15 psig. 3.2.2.7.8 An RTE BAY-O-NET current sensing fuse and internally vaunted partial range current limiting fuse shall be furnished as shown in Table 1. 3.2.2.8 OIL PRESERVATION Transformers shall be of sealed -tank constuction. Sealed -tank construction is that which seals the interior ofthe 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-5•C to 105•C. 3.2.2.9 TANKS The tank shall be domed or sloped to shed water. T he tank shall be of suffld ant strength to support a minimum of 500 lbs. vertical load. Construction of the tank shall be in acoo rdance with ANSI C57.12.25- 1981, paragraphs 6.1 and 6.6. 7 3W120 Opal Dick - 368dash120.pdf Page g REV. SYM: FF 3.2.2.9.1 The cover shall be welded construction. 3.2.2.9.2 Tank grounding provision shall consist oftwo steel pads, each with 'F inch - 13 NC tapped hole, 7l16 inch deep. 3.2.2.9.3 These ground pads shall be welded on the transformer base or on the tank wall near the base, one in the high -voltage side and one in the low -voltage side. In cases where the transformer tank and compartments are separate, provisions shall be made for electrically connecting them. 3.2.2.9.4 Looking bolts shall be pentahead. 3.2.2.10 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). 3.2.2.11 AUDIBLE SOUND LEVEL The audible sound level shall be in accordance with NEMA Standard TR1-1980. 3.2.2.12 BASE PLAN The base plan of completely assembled unit shall be such that itcen be installed on a pad of the dimensions shown in Fig. 1B. 3.2.2.13 PAINT EEI "Finishing Guidelines" specification shall apply. Finish coat shall be Munsell Green, glossy. 3.2.2.14 LOSSES The total losses of transformer shall be the su m of the excitation losses and the load losses (12R 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 Instruction to Bidders." Transformers will be evaluated on excitation losses and FR losses at the specified rates. If tested losses exceed quote losses but are within the tolerances of Table 18, ANSI C57.12.00-1987, the additional cost incurred from the differential of losses Wit 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 as me sire 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. 9 any unit or units exceed the tolerances of Table 18, ANSI C57.12.00-1987, 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 followng 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. 3.2.2.15 SAFETY LABELS NEMA 1260 Safety Labels shall not be applied bythe manufacturer: Purchaser will applycustomer warning labels after delivery. 8 368-120 Opal Dick - 368dash 120. pdf Page REV. SYM: FF 4 QUALITYASSURANCE 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 funish to the purchaser certified copies of the results of loss tests prior to payment. Copies shall be sent to the Design Section as well as with the invoice. Unsigned copes 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 required by Section 4.4 shall be conducted under the following conditions: 4.2.1 REFERENCE TEMPERATURE The reference temperature to which losses, impedanc e, regulation, and efficiency are corrected shall be 85°C. 4.2.2 TOLERANCE ON IMPEDANCE VOLTAGE Impedance on competed units shall fall within the range specified herein. 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 Not used. 4.4 TESTS The kinds of tests to be performed and the test procedur as shall be as specified in ANSI C57.12.20, ANSI C57.12.00, and C57.12.90 except as specified herein. 4.4.1 DIELECTRIC TESTS No applied potential test shall be made. The induced-potentia I test shall be made by applying between the terminals of one winding a voltage which will develop from high -voltage line terminals to ground a voltage of 1000 volts pus 3.46 times the rated transformer winding voltage. 4.4.2IMPEDANCE AND LOAD -LOSS TESTS Impedance and load -loss tests shall be made on each unit and may not be omitted even if a record of such tests made on a duplicate unit is available. 5 PREPARATION FOR DELIVERY Transformers shall be preflled with the appropriate amount of transformer oil and shall be shipped by open -bed trick. Units shall be packaged in such a way as to provide for ease of handling and to protect units from shipping damage. 9 368-120 Opal Dick - 368dash120.pdf Page 10 REV. SYM: FF Units shall be packaged on four-way universal pallets with 34 inches minimum opening and loaded on the truck for side removal. 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 arry additional requirerents or modifications shown on the purchase order andlor supplemental instructions. 6 DEFINITIONS AND ABBREVIATIONS Vendor or Supplier - The manufacturer arKLor manufacturer's agent supplying or quoting on the specified article. Article, Unit, Assembly - AN refer to the equipment defined by this Specification, • DC or d.c. - Direct Current. • AC or a.c. - Altercating 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. 10 368-120 Opal Dick - 368dash120.pdf Page 11� REV. SYM: FF APPENDIX A— Transformer Stock Number Coding Below are examples that demonstrate the coding method used by City of Fort Collins to establish transformer stock numbers. I. SINGLE PHASE Example #1:19--* Trn mfnm Single Phase 00 = 13.2Y/7620 & 7620/13.2Y x 2400/4160 outside pole 05=13.2Y7620 ESNA pole 20 = 13.2Y/7620 ESNA pad II. THREE PHASE Example #2 E* Transformer 3 Phase Pad 3T68 - f 368 -1 YZ Other KVA 0 = 5 5=50 1=10 6=75 2=15 7=100 3=25 8=167 4 = 37.5 9 = 250 1 = single voltage 2 = dual voltage - XYZ KVA 006 = 75 075 = 750 015 = 150 100 = 1000 030 = 300 150 = 1500 050 = 500 All suffixes indicate 208Y/120 sec. For 480Y/277 sec., add 1 to XYZ (ie. 007 would indicate a 75kVA with 480Y/477 sea) 11 368-120 Opal Dick - 368dash120.pdf Page 12� APPENDIX B — DIMENSIONAL DRAWINGS 40' MAX 20" MIN 4VI MIN 3e453k3IkN' , 4j'�I MIN IN M MMIN MAIN" NIA' HIB 'X3 'XI CABLE ACCFSSORY 1 7*11` 32"max PARKING STAND 1 X2 f GROUND PAD -- 18":2' MAX. OIM. 25 do 50 32. S" 100 -- 42` 1$7 42" 0' 23D 44' 55" WITHOUT WITH MINIMUM OPENING KV RADIATORS RADIATORS YO IN ROTM OF COMPARTMENT fOR CABLE ENTRANCE Figure 1 - Type 1 Transformer Dimensions and bushing Designations (not to scale) 12 36&120 Opal Dick - 368dash120.pdf Page 13 �I - E z° z TANK SURFACE DErAIL A CABLE ACCESSORY PARKING STAND BOTTOM ► 1 10.E FLANGE 4 MIN t--------_-_- r 4 MAX is MAJ 60ftlua ti MkN 7. REV. SYM: FF A INSME 31TpAA*f POaJT _ Zrl 2 i 3, MIN MIN 8.1 PLANE 4 Stock Number Dimension A 1 Dimension $ I Dimension C I Dimension D I'Dimension E 368-120-155 1 13" 1 5" 1 4" 1 a, 1 3 Y," Figure 2 - Type 2 Transformer Dimensions and bushing Designations (not to scale) 13 36&120 Opal Dick - 368dash120.pdf Page 14 REV. SYM: FF Pad Dimensions This drawing is riot intended to dictate requirements for items purchased under Specification 368-120 but is included as an aid to those users desiring a minimum of pad designs for the transformers covered by Specification 368-120. The dimensions in inches of Figure 3 will fit the minimum compartments on transformers covered by this Specification as well as the maximum transformer envelope. 01— FUUROREBW LERGT MOWUTM y L3 T 112' T T fax on Pad Material - 1. Concrete mmt W 3,Gg3 pi mnhum. 2 Maximum cear'e apprepate ... l 112.m.. Space ret,.k.eMs for it end Pknry.Mt Ng ceEnet .1 Bemraly be 9 % 12. Factors to M comitleretl in bcetkg tits, pas! rcNds - 1. Accesslfkty- TM tmmformer pit shal M accessibe to less born trucks equipetl forth. krtelM. eM remwel of harry trensformers. Such accessNily shal not requke ird.icn an e4went W wy. 2. P.Mkyef Bidengs, Wells, Berms, Moor Ovadrorp - tneddiion to ihocbarerwes r,4W irnet.11M. ant r ss,, the mnimum clearMkx n front of thetramfonmr pad steel be oW (8) feat ant the mimmn cbamma from al IXM'sees steel M two (2) feel. Iftm WIkMp has en werMng, cle sewe to the odpe of tM Iramform W stud be measured tw noisy frwntie outer edp of tMwedrrg Tremfwmers though M KVA m W nstalbd under the werhaw 8 the vestess cbamlwe between the ptl ant the weVang is a bast 2b feet ant Vie bcalidn is accessible to Me bops trucks. 3. Codes rid Standrde - Inaddkicn to tMaboae, the imtatatorl sMl conform to tM National Ebctrn Code and fedrel, elate end city code, erid staNerils. Finure 3 - Pad Olmensions 14 368-120 Opal Dick - 368dash120.pdf Page 15] REV. SYM: FF APPENDIX C —Approved Manufacturers Transformers purchased under this Specific ation shall be of the make shown below. Manufacturers not listed below may submit written proposals demonstrating compliance with these Specifications for corsiderati on of addition to the accepted manufacturers list prior to the next request for bids. In addition to inclusion on the list below, manufacturers equipment must also satisfy all requirements of this Specification to be acceptable. MANUFACTURER SERIAL NO. ABB Ail Cooper Power Systems All General Bectric Al Howard Industries Al The manufacturers in the following list have been conditionally approved and may rid as an alternate. The definition and intent of "Conditional Approval' of a maid acturer 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 dens. 15 368-120 Opal Dick- W8dash120.pdf Page 16� REV. SYM: FF TRANSFORMER LOSS EVALUATION - AVERAGE LOSSES City Order No. SIN Manufacturer Invoice No. WA/Unit LINE DESCRIPTION A MOUNT (1) No. of units (2) Average core losses (3) Quoted core losses (4) Excess average care losses: line (2) less fine (3) (5) Penalty for excess average core losses: line (1) x line (4) x $ (6) Average copper losses (7) Quoted capper losses (8) Excess average c r losses: less line (V6) Tine (9) IPe l�v)forl ramie Sj z $ e copper losses: (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 ANSI C57.12.00, Light & Power will either reject it, include it on these averages, or calculate losses using the Individual Transformer Losses Evaluation Forth, whichever is most favorable to Light and Power. 16 368-120 0 a a , Citv of Fort Collins Page Number: 2 City of Fort Collins Date: 08/04/06 Purchase Order Number: 6604944 Delivery Date: 08/04/06 Buyer: DICK,OPAL Purchase Order number must appear on invoices, packing lists, labels, bills of lading, and all correspondence. Note: Line Qty UOM Description Unit Price Extended Price PREVIOUS QUOTE 23931 MFR. ABB ESCALATION IS APPLICABLE ADJUSTMENTS WILL BE REVIEWED BYCITY PRIOR TO PRODUCTION AND IN ACCORDANCEWITH STATED INDICES IN PRICING. ANY INDEX ESCALATION (INCREASE) AFTER THE QUOTED DELIEVERY DATE WILL NOT BE ALLOWED. NO LOAD LOSS - 242 FULL LOAD LOSS - 1101 TOTAL LOAD LOSS - 1343 IMPEDANCE 2.51% DELIVERY: 32 WEEKS OR CITY OF FORT COLLINS MAY CONSIDER THE CAPACTIY Opal Dick - 368dash120.pdf Page 17 INDIVIDUAL TRANSFORMER LOSS EVALUATION City Order No. SIN Manufacturer Invoice No. KVNUrd LINE DESCRIPTION AMOUNT (1) Tested core losses (2) Quoted con: losses (3) Excess core losses line (1) less line (2) but rat less than zero (4) Percent difference % line (3) D line (2) x 100 (5) Tested total losses (6) Quoted total losses () Excess total losses line (5) less line (6) but not less than zero (8) Percent difference % line (7) D line (6) x 100 (9) Tested copper losses (10) Quoted capper losses (11) Excess copper losses (12) 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 $ (14) Penalty to be assessed manufacturer line (12) plus line (13) Date Prepared By: Design Engineering REV. SYM: FF 17 368-120 Opal Dick - 368dashMinstructions.pdf Page I Issued: 8/17/72 Revised: 1 /21 /94 Special Conditions and Supplemental Instructions to Bidders Applicable to Specification 368-120 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 bythe "Invitationto Bid" and the "Purchase Requisition". 1. Atypical listofusers of I phase padmounted distribution class transformers manufactured bythe bidd erduring the past five years. 2. Atypical drawing of the transformers showing that they will meetthe critical dimensions required by the Specification. 3. Impedance volts in% at full load, high voltage to low voltage at 850C. 4. No load and total losses at 85oC. 5. Delivery in weeks. 6. A statement indicating compliance with our Specification without exception or detailed list of exceptions. 7. Escalation is _ is not _applicable for the transformers bid. Ifescalation applies, the Bidder shall indicate inhis bid the specific items ormaterials subject to escalation, and shall give the method and indices to be used in computing the amount thereof. Escalation occurring afterthe quoted delivery date will not be paid unless delays are the result of actions by the C ity. 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: No load or excitation losses at $3.90/watt. 2. Load losses at $1.50/watt. Opal Dick - 368dashl20instructions.pdf Page 21 Shipping Terms Ship F.O.B. point of destination, freight prepaid. D. Terms of Payment 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 not 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 Design Section, Fort Collins Light and Power Utility. Loss penalty credits and escalation charges shall be itemized on the invoice. Date: 08/04/06 City of Fort Collins Page Number: 3 City of Fort Collins Purchase Order Number: 6604944 Delivery Date: 08/04/06 Buyer: DICK,OPAL Purchase Order number must appear on invoices, packing lists, labels, bills of lading, and all correspondence. Note: Line Qty UOM Description Unit Price Extended Price PLAN ARRANGEMENT AS PROVIDED IN THE QUOTATION FOR THESE UNITS WITH SPECIFIC SHIPMENTS AND QUANTITIES TO BE STATED WITHIN THE NEXT 7 CALENDAR DAYS BY WESCO Total $22,542.00 City of Fort qllifis Director of Purchasing and Risk Management City of Fort Collins This order is valid over $2000 unless signed by James B. O'Neill II, CPPO, FNIGP Accounting Department City of Fort Collins Purchasing, PO Box 580, Fort Collins, CO 80522.0580 PO Box 580 Fort Collins, CO 80522-0580 Opal Dick - 368dash120.pdf Page THE CITY OF FORT COLLINS Light and Power Department P.O. Box 580 Fart Collins, CO 80522 SPECIFICATION NO: 368420 TITLE PAD -MOUNTED COMPARTMENTAL -TYPE, SINGLE-PHASE DISTRIBUTION TRANSFORMERS WITH SEPARABLE INSULATED LOAD BREAK HIGH -VOLTAGE CONNECTORS APPROVED BY: Kraig E Standards Engineering Manager ORIGINATED: 09/14/72 LAST REVISED: 712112004 ITEMS COVERED BYTHIS SPECIFICATION DESCRIPTION STOCK NO. SPECIFICATION NO. SERIAL 25 KVA 120/240 ANSI Type 1 Transformer. 368-120 -130 50 KVA 120/240 ANSI Type 1 Transformer. 368-120 -150 50 KVA 120/240 ANSI Type 2 Transformer. 368-120 - 155 100 KVA 1201240 ANSI Type 1 Transformer. 368-120 -170 167 KVA 1201240 ANSI Type 1 Transformer. 368-120 -180 250 KVA 120/240 ANSI Type 1 Transformer. I 368-120 I -190 Opal Dick - 368dash12O pdf Page 2 REV. SYM: FF PREVIOUS REVISION DESCRIPTIONS ON FILE REVISION DESCRIPTION APPROVED REVISION DD: Sagen Paragraph 3.2.2.7.5: Editorial 10/21/94 • Acid paragraph 3.2.2.9.4 requiring pentahead locking bolts • Paragraph 3.2.2.13 add glossy to paint requirement • Paragraph 4.2.2: Cladfy impedance requirement REVISION EE: Sayan • Paragraph 5.0: revised pallet size from 28 to 34 inches 2/25198 REVISION FF Kraig Bader • Added 50kVA ANSI Type 2 Transformer (368-120-155) to Specification 7/21/2004 • Changed paint color to standard Munsell Green • Reorganized to consolidate impedance and fusing requirements into one table. • Consolidated secondary terminal requirements into one table. • Added maximum impedance requirement for 250kVA transformer (+/-7.5%from nominal for transformers with impedance greater than 2.5%) per ANSI/IEEE C57.12.00-2000. • Reevaluated fusing requirements of all transformers in this specification. Went from dual sensing bay-o-net (expulsion) fuses to current sensing bay-o-net (expulsion) fuses. Fuse sizing was charged as follows: Changed 25 kVA from 8A expulsion / 40 amp CL to IOA expulsion 130A CL Charged 50 WA from 15A expulsion 180 amp CL tol5A expulsion / 40A CL Changed 100 kVA from 25A expulsion 1176 amp CL to25A expulsion / BOA CL Charged 167 kVA from 40A expulsion 1200amp CL to40A expulsion / 125A CL • Changed 250 kVA from 65A expulsion 1350amp CL to65A expulsion 1125A CL 2 368-120 Opal Dick - 368dash120.pdf Page TABLE OF CONTENTS PREVIOUS REVISION DESCRIPTIONS ON FILE . 1 SCOPE REV. SYM: FF ............ ............. .2 .._....„._......._.._... ............. .._......... ............. ...4 2APPLICABLE DOCUMENTS_...._. ._.._._.._ .._„_.„..„ .._.._._... .._...._.._ ...... _..... ............. .._..„.._.. _.._.._..... ...„4 2.1 ANSI C57.12.00-DISTRIBUTION,POWER, AND REGULATINGTRANSFORMERS, AND SHUNT REACTORS, GENERAL REQUIREMENTS FOR................. ................ ................ ................ ................ ................ ................ .............. .................. ................ ................ ................ ........4 2.2 ANSI C57.12.25 -PAD MOUNTEII COMPARTMENTAL -TYPE, SINGLE-PHASE, D19MBUTIONTRANSFORMERS WITH SEPARABLE H-V CONNECTORS, STANDARD REQUIREMENTS FOR ................. ................ ................ ................ ................ ................ ................ .............. ........4 2.3 ANSI C57.12.28-SWITCHGEARANDTRANSFORMERS -PAD-MOUNTEDEQUIPMENT-ENCLOSUREINTEGRITY....................... _...... 4 2.4 ANSI C57.12.70 -TERMINAL MARKINGSAND CONNECTIONSFOR DISTRIBUTION AND POWER TRANSFORMERS .................... ...........4 2.5 ANSI C57.12.50-TERMINOLOGYFOR POWER AND DISTRIBUTIONTRANSFORMERS ................. ................ ................ ................ .......4 2.6 ANSI C57.12.90 - DISTRIBUTION, POWER, AND REGULATINGTRANSFORMERS , AND SHUNT REACTORS, TEST CODE FOR. ................ 4 2.7 IEEE C57.91 - GUIDEFOR LOADINGMINERAGOIL IMNMRSED OVERHEAD AND PAD-MOUNTEDDISTRIBUTIONTRANSFORMERS RATED 500 KVA AND LESS WITH 65°C OR 550C AVERAGE W INDINGRISE................. ................ ................ ................ ................ ........A 3 REQUIREMENTS......_ ._„_ _._.._.._. ... _....... ._.._...... ........_... .._.._....... ...... .._.. ............... .._....„„..„ ... .......... ...........A 3.1 GENERAL REQUIREMENTS FOR DESIGN ................ ................ ................ ................ ................ ................ ................ ...............4 3.2 SPECIFIC DESIGN REQUIREMENTS .... ................ ................ ................ ................ ................ ................ ............... ................. ......5 4 QUALITY ASSURANCE___.. ............... ......._....... ............. _..... ........ .. ....9 4.1 GENERAL ......... ................ ._............. ................ ................ ................ ................ ............... ................. ................ ................ ..............9 4.2 TEST CONDITIONS ...... ................ ................ ................ ................ ................ ................ ............... ................. ................ ................ .9 4.3 NOT USED ................. ................ ................ ................ ................ ................ ................ .............. .................. ................ ................ ......_9 4.4 TESTS ........... ................ ................ ................ ................ ................ ................ ............... ................. ................ ................ ................ ...9 5PREPARATION FORDEUVERY_.._. ._._._.._. ._.._._..... ....___..__ ._...... .... ......... ..._..__. ....._._.„.._ ._.._.._.._. _..„.._.9 6 DEFINITIONS AND ABBREVIATIONS.....__._._ _..„._..„.. ............ _....___.. _. _.._.. _.._._... APPENDIX A -TRANSFORMER STOCK NUMBER CODING...„._.. ..... _.._.. .„„_...__ ............. APPENDIX B- DIMENSIONAL DRAWINGS ... _...___......_. ............. „..„..„..... ........ _.. ....... PADDIMENSIONS ._..... _... ... ._..„._.._ ._.._.._.„. ._....__..... ............. .._........ ............. .... APPENDIX C-APPROVED MANUFACTURERS .............. ...... ._...... _...... ....... _..... _...... ............ TRANSFORMER LOSS EVALUATION -AVERAGE LOSSES.„..... ............. ........... .„..„_...... INDIVIDUAL TRANSFORMER LOSS EVALUATION ......... _... .......... _.... ......... _... .............. ........ ._......... _...10 _.._.___.. „........... _ ._...... 11 .............. _..... ...... _12 ....... _ ..__...„„.. ............14 .............. _... ....... .. .....15 ........ ._--------- .... „.... 16 .. ............. ............. .17 3 368-120 Opal Dick - 368dash120.pdf Page 4 REV. SYM: FF SPECIFICATION FOR PAD -MOUNTED COMPARTMENTAL -TYPE SINGLE-PHASE DISTRIBUTION TRANSFORMERS WITH SEPARABLE INSULATED LOAD BREAK HIGH -VOLTAGE CONNECTORS 1 SCOPE This Specification establishes the minimum electrical requirements and mechari cal features of single phase, 60 HZ, mineral oil immersed, self -coded, pad -mounted, compar trnental-ty pe distribution transformers rated 250 WA and smaller, high voltage 13,200 Grd Y/7620 volts, with separabl a insulated load break high voltage connectors. These transformers are used for step doom purposes from an underground primary cable supply. This standard generally conforms with ANSI requirements for pad -mounted compartmental-ty pe, self -coded, single- phase, distribution trans farriers, C57.12.25. 2 APPLICABLE DOCUMENTS The following documents of the issue shown form a part of this Specification to the extent specified herein. In those cases when the document is note dated, the latest issue in effect on the date of invitation for bids shall form a part of this Specification. 2.1 ANSI C57.12.00 - Distribution, power, and regulating transformers, and shunt reactors, general requirements for. 2.2 ANSI C57A2.25 - Pad mounted, compartmental-t ype, single-phase, distribution transformers with separable H-V connectors, standard requirements for. 2.3 ANSI C57A2.28 - Switchgear and Transformers - Pad -Mounted Equipment-Enclos ire Integrity. 2.4 ANSI C57.12.70 -Terminal markings and connections for distribution and power transformers. 2.5 ANSI C57.12.80 - Terminology for power and distribution transformers. 2.6 ANSI C57.12.9 0 - Distribution, power, and regulating transformers, and shunt reactors, test code for. 2.71EEE C57.91 - Guide for Loading Mineral-Oil-Imme rsed Overhead and Pad -Mounted Distribution Transformers Rated 500 WA and Less with 650C or 55°C Average Winding Rise. 3 REQUIREMENTS 3.1 GENERAL REQUIREMENTS FOR DESIGN 3.1.1 BASIC DESIGN STANDARDS Transformers purchased under these Specifications shall be new and, url ess 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 shorn: a) This Specification b) Applicable ANSI Standards Approved manufacturers are listed in Appendix C. 4 368-120 Opal Dick - 368dash120.pdf Page 5 I;1z3W1Yt W;I 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 WC When measured dear the top of the tank. The temperature rise is based on an altitude of 3,300 feet. The transformers shall be des igned for overloads based on IEEE C57.91. 3.1.3 GENERAL CONSTRUCTION 3.1.3.1 The pad -mounted compartmental-ly pe transformers shall consist of the transformer tank and high -and -low - voltage cable terminating compartment constructed in accordance with ANSI C57.12.25 and ANSI C57.12.28. The terminating compartment and tank 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. The cover shall be welded construction. There shall be no opening through which foreign object 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 si de on one side ofthe transformer tank When facing the compartment, the low -voltage side shall be on the right 3.1.3.3 Construction of the unit shall be such that itcan 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 for Type 1 transformers shall be as shown in Figure 1, Appendix B. Minimum dimensions for Type 2transformers shall be as shown in Figure 2, Appendix B. 3.2 SPECIFIC DESIGN REQUIREMENTS 3.2.1 FUNCTIONAL DESCRIPTION The transformer shall be a single phase, pad mounted, loop feed -safe break, "dead -from" type for use on a 13.8 kV grounded "Y" distribution system. 3.2.2 DESIGN AND CONSTRUCTION 3.2.2.1 RATING The transformer shall berated as follows: a) High Voltage 13,200 Grd. Y17620 volts b) Low Voltage 240/120 c) Taps Two - 2Y2% FC above and below normal d) Polarity Additive e) Capacity, Impedance values, and fusing for transformers in this specification shall conform to Table 1: 5 368-120 Opal Dick- 368dash120.pdf Page 6 REV. SYM: FF Table 1 - Transformer Capacity, Impedance and Fuse Selection kVA I Min. Max. Bey-0-Net' Current Limiting Fuse(s) 'l I Capacity j Impedance I ImpedanceFuse I' I 368-120-130 1 25 1.77% 2.16% 10 Amp ELSP 3544030M IM (30 A) 4000353C06 368-120-150 5o 1.77% 2.16% 15 Anp ELSP 3543040M61M (40 A) 4000353COB 36&120-155 50 1.77% 2.16% 15 Anp ELSP 354304011A1M (40 A) 4000353C08 3611-120-170 100 1.95% 2.38% 25 Mp ELSP 35430BOM71M (80 A) 4000353CIO 368-120-180 167 2.28% 2.79% 40 Amp ELSP 3543125M71M (125 A) 3611-120-190 250 5.75% 6.61% 65 Arrp ELSP 3543125M71M (125 A) 14 *The BAY-0-NET fuse shall be located in the high voltage side of the compartment. 3.2.2.2 INSULATION LEVEL 3.2.2.2.1 The basic impulse insulation level (BIL) of completely assembled 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 4 of ANSI C57.12 00. 3.2.2.3 HIGH -VOLTAGE TAPS A no-load tap changer with external operating handle shall provide two - 21A% full capacity taps above and below normal. The tap clanger operating handle shall be located within the high -voltage terminal side ofthe terminal compartment 3.2.2.4 NOT USED 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 or Fig. 2 in Appendix B. All low -voltage bushings and high -voltage wells shall be externally damped and shall have leads of sufid ent 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 terminals shall be universal flowerpot bushing wells in accordance with Figure 3 of ANSIAEEE 386-1985. Two wells shall be provided and shall be connected in a feed -through configuration. Loadbreak bushing inserts in accordance with Figure 5 of ANSIAEEE 386-1985 will be owner furnished. 3.2.2.5.3 Low -voltage line and neutral terminals shall be sized as shown in Table 2 in acmrdance with ANSI C57.12.25. Bushing arrangement and spacing shall be shown in Fig. 1 or Fig. 2 in Appendix B. Table 2 - Low Voltage Terminal Sizes Stock Number I kVA Capacity Low voltage Terminal Size 368-120.130 25 518" x 11" UNC-2A copper studs 368-120-150 50 5r8" x 11" UNC-2A copper studs 368-120-155 50 518" x 11" UNC-2A copper studs 368-120170 100 V x 1,V UNC-2A copper studs 368-120-180 167 1" x 14" UNC - 2A copper studs 368-120-190 250 1YV x 12 UNF - 2A copper studs. 3.2.2.5.4 The Im*voltage X2 bushing shall be a fully insulated bushing. A ground pad shall be provided on the outer surface of the tank and an external removable copper ground strap shall be provided and connected between the low -voltage X2 bushing and the ground pad. 3.2.2.5.5 The high -voltage neutral shall be securely grounded internally. 6 368-120