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HomeMy WebLinkAbout102795 WESCO DISTRIBUTION INC - PURCHASE ORDER - 8850760Date 02/07/08 City of Fort Collms Page Number 1 Vendor 102795 City of Fort Collins WESCO DISTRIBUTION INC WEBCO AURORA LITILITY 16401E 33RD DRIVE STE 10 AURORA CO 80011 Purchase Order Number 8850760 Shtp To UTILITY SERVICE CENTER - WAREHOUSE CITY OF FORT COLLINS 700 WOOD ST FORT COLLINS CO 80521 vonvaIy UOLU vcionuo 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 1 5 EA T3000051 XMFMR 15 217 00 776 085 00 500 kVA 480Y/277 T3000051 YARD TRANSFORMER 500 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 051 TO BE IN ACCORDANCE WITH SPECIFICATION #368 300 051 REVISION MM MFR ABB BID #5920 NO LOAD LOSS 924 FULL LOAD LOSS 2346 TOTAL LOAD LOSS 3270 REV SYM MM 3 2 2 4 HIGH VOLTAGE TAPS A no load tap changer with external operating handle shall provide two 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 3114 4 kV bushings in accordance with ANSI/IEEE Std 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 lack bosses or equivalent lacking facilities shall be provided on the tank Vertical clearance for a lack shall be 1'/z 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 manufacturers 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 RZft:IiIQi: 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 • '% NPT or larger male Inlet Port • Exposed parts of weather and corrosion resistant materials • Non deteriorating gasket and o-nng 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 -32 C to 105 C 3229TANKS The tank shall be domed or sloped to shed water and shall be of sufficient strength to support a minimum of 500 Ibs 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 comer 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 - Fusing Requirements Expulsion Fuse Continuous Current Limiting Fuse Stock WA 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 7501kVA (4000353C14) (3544125M71 M) 368 300 100 1000kVA 368 300 101 1000kVA 368 300 151 1500kVA 140A 250A Parallel 125A fuses 368 300-201 2000kVA 4000353C17 3544125M71M 368 300 251 2500kVA 125A Hi Amp OL Link C05CB 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 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 bier 60 65 GS + + 60 N2A N2R 270 45 45 65 85 45 85 38 MIN FLANGE 3/4 MIN 11/2 MAX 4 MIN 45 MIN X1 — X3 � - --I1 1, KVA RATINGS LOW VOLTAGE RATINGS COMPARTMENT DIMENSIONS (MINIMUM) BUSHING HEIGHT A R 75150 ALL 2325 27 225�500 AI L 28 31 750 1000 480Y2]] 208Y/120 28 16 1510.2500 480v/227 28 48 NOTE Dense: sae tlimeereiana Sae Fig 5 All Ems aionsm (codes) Maxim m 5 mens A 11 IIm one nch clears from 5g & pad lFip 6) Figure 1 - Accessory compartment & Bushing Dimensions (Config 1) REV SYM MM 11 368 300 2 85 MIN i TANK SURFACE TANK SURFACE I 1 I I I 1 � i I I I I I I 0 75 + 1!8 0 INSIDE Cable ACCOMFY Park my 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 4 0" A A A 4 0" MIN MIN CL Xl ,—i X3 B I I XO i X2 i REV SYM MM 6" RADIUS TYPICAL 3 PLACES KVA RATINGS LOW VOLTAGE i RATINGS A B 75-150 ALL 475 8 225-500 ALL 6 8 750-2500 4801277, 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 REV SYM MM KVA SERIAL PAD DIMENSIONS (inches) A B I 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 5002500 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 Lilting 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 dram 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 9.1-W16l11 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 Table 3 Radial Feed Transformer Rahn s Stock No WA Low Voltage Impedance Bushin T e/Confi HI h Volta a Low Volta e 368-300- 006 75 208Y/120 1 9% (Z &D 368-300- 007 75 480Y/277 1 9% OO &D OO 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 ® Figures 9(a) & 9(d) of ANSI C57 12 26 1992 (stud with 4 hole pad) © 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 41GENERAL 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 12 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 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 Table 4 Functional Tests TEST TEST PARAGRAPH REQUIREMENT OR REFERENCE Examination Of Product 46 3 0 3 1 3 2 3 3 hisspecification) Ratio 46 ANSI C57 12 00 Section 8 Polarity And Phase Relation 46 ANSI C57 12 00 Section 8 Excitation Loss 46 ANSI C57 12 00 Section 8 Excitation Current 46 ANSI C57 12 00 Section 8 Impedance & Load Loss 46 ANSI C57 12 00 Section 8 Temperature Tests* 46 ANSI C57 12 00 Section 8 Dielectric Tests 4 6 1 3 2 2 2 This specification Impulse Tests 462 3 2 2 2 This specification) Leak Testing 463 3 2 2 8& 3 2 2 9 This specification) Noise Testing 464 3 2 2 12 This specification) *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 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 away 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 (M^,bMM City of Fort Collins Page Number 2 VAnooC 102795 City of Fort Collins WESCO DISTRIBUTION INC WE-SCO AURORA UTILITY 16401 E 33RD DRIVE STE 10 AURORA CO 80011 Date 02/07/08 Purchase Order Number 8850760 Ship To UTILITY SERVICE CENTER WAREHOUSE CITY OF FORT COLLINS 700 WOOD ST FORT COLLINS CO 80521 ueuvery uate uuunuts 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 IMPEDANCE 3 04% FIRM PRICE Delivery 4 units 4 18 08 1 unit 523 08 City of Fort III s Director of Purchasing and Risk Management This order Isna valid over $2000 unless signed by James B O Neill II CPPO FNIGP City of Fort Collins Purchasing PO Box 580 Fort Collins CO 80522 0580 Total $76 085 00 City of Fort Collins Accounting Department PO Box 580 Fort Collins CO 80522 0580 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 d c Direct Current • AC or a 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 • 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 15 6 — f 26 85 I I � I 4 - - PRIMARY SEC 1 I I 27 I— 13 55 T L L 3 FOUR p3 PEBAR LENGTH AND WIDTH If y 40 7 5T/8 L3 T- 1 No e on Pad Materal — I Concr to nom m st be 3000 ps Yo 2 Me mind co se fgg egcte sze I1/2 has Space requ rement o pad a d p ma y sN t hind cab net w II genera I/ b 9 X 12 F ctor t b cc de ed local g th oad cl de — f Access b I ty — The t chat. mer pan shall be acc ss ble to e boom t ucks eq pped for the nstallaton and emo of of bad y t a ate me s S ch acces b I ty shall not eq re ntr on on enlace t p ape ty 2 P oxnoty of Butongs Walls Burr at and/(r 0 erho gs — aod r o a the c a a ce red red for no ollat on and r m 1 the m mum Cl a s ce f o ( of the t arsformer pad shall be e ght f8) feet and h an mum lea a ce f am all .the s des shall be th as f3) feet f the b Idng has a o art g of a a ce to the Yea o the t o sforme pad shall be mess es her zontally from the cote edge of the o e he of T a to me s th o g cOJ K!A may be n tolled a be the a e ho g f the e t at lea once between the pad and the If erha g s t lea t 25 feet a d IT to at s access ble to I ne boom tr cks 3 Codes a d Sto do as — I add ton t IF be e the nstollota th 11 cc to an t. the Nato at Eec rc Code and feds of state a of cty codes a d sta do d 2 8/2S/93 REV NO DATE DWN D E APP DSNG ENG APP DIST APR CITY OF FORT DEPARTMENT S DWG 3PHASE1 LIGHT AND POWER DEPARTMENT TRANSFORMER PAD DESIGN 75 — 500 KVA 3 PHASE Figure 1A - Pad Design (75 - 500 KVA) 20 368 300 REV SYM MM BS 72 l , 15 PRIMARY SECBN➢ARY FRONT T T T 9 T — 3 18 FOUR n3 REBPR 3ZY LENGTH AND wIIdTH 7 5/8 r 3 -fF- T Notes o Pad More I — I Co c ate m st be 3 000 Us m NO on 2 Ma m oa se egg agate so 11/2 ches Space eq eme t W pad a d or ma y sw tch g cob et w II ge e ally be 9 X 12 Facts s to be o s dered locat g the bad d at, — 1 Access Is I ty — The t o sfa me bed shall be access ble to I e boom t ks eqe Aped for the nstallaton and red o cl of red y t ansformers S ch dccessb ty snall not eq e at s o dBace t p no ty 2 P o an y of B to ngs Walls Our s and/o 0 e crags — oddto to the Ilea a es eq Ed to stallata a d eme al the m m m clad a ce f ant of the transform pad shall be e ant (8) feet and the an n an m clearance f am all othe d s shall a to (4) fie t If the b to a has a o s ho g bled a ce to the edge of the t a sfo me p d hall be mead ed no so tally f am the o ter age of the a erho g T a sfo me s th a At 300 KVA ma/ be stalled de the o erhang f U e t cal clad a ce betwee the and a d the o erhong s at I ast 25 f st a d the local o s acce Idle to I boom irs ks 3 C d s d Sta do do — I odd to to he she e the stallata shall conform to the No onol I err Cod a d feet, a1 state a of to codes and sto d he 0 REV NO I DATE DhN I DE APP I DSNG ENG APP DIST APP CITY OF FORT COLLINS DWG 3PHASE2 LIGHT AND POWER DEPARTMENT TRANSFORMER PAD DESIGN ^t^'•�^�� 500 — 1000 K\'A 3 PHASE Figure 2A - Pad Design (500 -1000 KVA) 21 368 300 REV SYM MM 107 PRIMARY 15 WINDOW SECONDARY i 8 � PROM — 29 23 28 2B ae J J— i T-3 L 3 IV[ u5 REBAR 3 v 91 f3 LENGTH AND WIDTH — 3 'TS/8 _ T i Note on Pad Mutest 1 Co c st m at be 3 000 le2 Max mam coarse agg agate aze 1 1/2 ches space eq remerts for pad a a p me y wtch q cab st w11 gene ally be 9 X 12 costa s to b d d cat q the pad I de — 1 Access AIto — The transfome pea hall be accessible fo Ina boom tr cks eq pped o the stallata and sm. of of f ea y t a forme S h ss b I ty hall .t eq t s. o adta en o p ty 2 P o an ty of Bu la g sells Be e s and/or 0 amongs In add ta t the ceaa a equ ad to nstalloton and eno al the m an I f o of the a sfo me pad shall as e ght (8) f t d th cleo a ce f om all .the see ch I o f (4) f et manIlthe b to q rap a . e hang also once to the edqe of the t a c o me pad shall be m as ad he so tally f an th t cede of the o e no g T a sfo m s th to of S00 IVA an y stalled de th o he g f the e tcal lea b twee IT pod o d the o e he g s t least 2a f t d the Iota c s occes ble to I a boom t cks 3 C d d Sto da as — I dd t o t t H be e th n t 11 t h 11 co to m to the Noton El t C be a d fed rat slat a d cIf codes a d sto dards REV NO DATE DWN I D E APP I DSNG ENG APP DIST APP CITY OF FORT COLLINS DWG 3PHASE3 LIGHT AND POWER DEPARTMENT TRANSFORMER PAD DESIGN 1000 — 2500 KVA 3 PHASE Figure 3A - Pad Design (1000-2500 KVA) KI.T.W0I8] 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 pnor 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 Bovan (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 4--f. ] 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 TRANSFORMER LOSS EVALUATION AVERAGE LOSSES S/N Invoice No 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 INDIVIDUAL TRANSFORMER LOSS EVALUATION City Order No S/N Manufacturer Invoice No LINE DESCRIPTION AMOUNT (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 $ (14) Penalty to be assessed manufacturer Line (12) plus line (13) Date Prepared By Design Engineering REV SYM MM 26 368 300 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 WITH SEPARABLE INSULATED LOAD BREAK HIGH VOLTAGE CONNECTORS APPROVED BY � Kraig Bader Standards Engineering Division Manager ORIGINATION DATE 8112/83 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 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 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 1895 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 Sagan 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 Sagen 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 senes with an ELSP current hmjbng 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 BV THIS SPECIFICATION 2 REVISION DESCRIPTIONS 3 t 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 15 APPENDIX A 19 APPENDIX B 23 APPENDIX C 24 TRANSFORMER LOSS EVALUATION AVERAGELOSSES 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 • 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 12 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 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 REV SYM MM comer 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 MM 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 Loop Feed Transformer Ratmas Stock No WA Low Voltage Nominal Impedance BushingT /Confl High Voltage Low Voltage 368-300- 008 75 208Y/120 1 9% O OO 368-300- 009 75 480Y/277 1 7% O 3® 368-300- 015 150 208Y/120 2 1 % O OO 368-300- 016 150 480Y/277 2 1% O O® 368-300- 030 300 208Y/120 2 5% O OO 368-300- 031 300 480Y/277 2 5% O OO 368-300- 050 500 208Y/120 3 04% O OO Os 368-300- 051 500 480Y/277 3 04% O 39) 368-300- 075 750 208Y/120 5 75% 0 O 368-300- 076 750 480Y/277 5 75% 0 O 368-300- 100 1000 208Y/120 5 75% O O 368-300- 101 1000 480Y/277 5 75% O O 368-300- 151 1500 480Y/277 5 75% O O 368-300- 201 2000 480Y/277 5 75% O O 368-300- 251 2500 480Y/277 5 75% O Os OFigure 1 (V config ) of this specification OO 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) OO 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 7 368 300