HomeMy WebLinkAbout102795 WESCO DISTRIBUTION INC - PURCHASE ORDER - 6604957Date: 08104/06
Grp:.
City of Fort Collins
Page Number: 1
City of Fort Collins
Purchase Order Number: 6604957
uenvery ware: uailoiur Buyer: DICK,OPAL
Purchase Order number must appear on invoices, packing lists, labels, bills of lading, and all correspondence.
(vote:
Line Qty UOM Description Unit Price Extended Price
1 30 EA T3000008; transformer
75kVA; 208Y/120 3P pad
T3000008
YARD
TRANSFORMER, 75 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 208Y/120.
SERIAL NUMBER 008 TO BE IN ACCORDANCE
WITH SPECIFICATION #368-300-008, REVISION MM
MFR. ABB
ESCALATION IS APPLICABLE
ADJUSTMENTS WILL BE
REVIEWED BYCITY PRIOR
6,551.000 196,530.00
Opal Dick - 368dash300.pdf Page 7
REV. SYM: MM
3.2 SPECIFIC REQUIREMENTS FOR DESIGN OF LOOP -FEED Units
The transformer shall be a three phase, pad mounted, loop feed -safe break, "deadfront" type for use on a
13.8 kV grounded "Y" distribution system.
3.2.2 DESIGN AND CONSTRUCTION
3.2.2.1 RATINGS
Table 1 - Loon -Feed Transformer Rafinns
Stock No. WA Low Nominal
Voltage Impedance
BushingT e/Confi .
High Voltage
Low Voltage
368-300- 0681
75
208Y/120
1.9%
c
of
368-300- 009
75
480Y277
1.7%
c
of
368-300- 015
150
208Y/120
2.1%
c
of
368-300- 016
150
480Y277
2.1%
c
of
368-300- 030
300
208Y/120
2.5%
c
of
368-300- 031
300
480Y277
2.5%
c
of
368-300- 050
500
208Y/120
3.04%
C
e
368-300- 061
500
480Y277
3.04%
C
of
368-300- 075
750
208Y/120
5.75%
c
368-300- 076
750
480Y277
5.75%
c
368-300- 100
1 000-f
208Y/120
5.75%
c
368-300- 101
1000
480Y277
5.75%
c
368-300- 151
1500
480Y277
5.75%
c
368-300- 201
2000
480Y277
5.75%
C
368-300- 251
2500
480Y277
5.75%
c
CFigire 1 (V-config.) of this specification
e 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
f Figure 9(a) of ANSI C57.12.26 - 1992 (4 hole pad)
g Figure 9(b) of ANSI C57.12.26 - 1992 (6-tale 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 remit shall withstand test voltages in ac cordance 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
Opal Dick - 368dash300.pdf Page 8�
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 law -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 bushi ng wells shall be 200A load -break interfac a 8.3114.4 kV bushings in accordance
withANSI1IEEE Std. 386.
3.2.2.5.3 Law 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 insu laced 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 law -voltage neutra I bushing and the ground pad.
3.2.2.5.5 The high -voltage neutral shall be connected to the low -voltage neutral internally with provision for
opening this connection for testing.
3.2.2.6 ACCESSORY CABINET
3.2.2.6.1 The accessory cabinet shall consist of a high -voltage and low- voltage compartment generally
constructed in accordance with applicable ANSI specifications and dimensioned in accordance with
Fig.1 of this Specification.
3.2.2.6.2 Cabinet doors shall be hinged, removable, and lockable. Stainless hinge pins shall be provided.
3.2.2.7 ACCESSORY EQUIPMENT
Accessory equipment shall be provided in accordance with Table 1A and the following details:
3.2.2.7.1 Suitable jack bosses or equivalent jacking facilities shall be provided on the tank. Vertical
clearance for a jack shall be 1'/ inches minimum, 31/2 inches maximum.
3.2.2.7.2 The transforrer 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 pace. 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 informal ion specified in ANSI C57.12.00-2000, paragraph
5.12. In addition, either on the nameplate or label affixed near it, the manufacturer shall indicate that
the dielectric fluid is non -PCB.
8
368-300
Opal Dick - 368dash300.pdf Page 9]
REV. SYM: MM
3.2.2.7.E An automatic pressure relief device shall be located within the compartment. This device shall
meet the following requirements:
%" NPT or larger male Inlet Pat.
Exposed parts of weather and corrosion resistant materials.
Non-detedoratin g gasket and o-ring material.
Manual pull ring able to withstand 25 pound fora: minimum.
Body able to withstand 100 pound fora: minimum.
• Bug shield.
• Cracking pressure of 10 t 2 psig.
Resealing pressure of 6 psig minimum.
• Zero leak rate from resealing pressure to-8 prig.
• Minimum flow rate of 35 SCFM at 15 psig.
3.2.2.8 OILPRESERVATION
Transformers shall be of sealed -tank construction. Sealed -tank construction is that which seals the interior
of the tank from the atmosphere, and in which the gas plus the oil volume remains constant. The
transformer will remain effectively sealed for a top -oil temperature range of —320C to 105°C.
3.2.2.9 TANKS
The tank shall be domed or sloped to shed water and shall be of sufficient strength to support a minimum
of 500 lbs. Construction of the tank shall be in accordance with ANSI C57.12.26-1992, Section 7, except
bolted cover is preferred.
3.2.2.9.1 If main cover is welded, adequate handhole(s) shall be provided. Handholes shall be concealed.
Bolted -on covers shall be adequately gasketed and tamperproof. Main cover bolts may be
exposed: however, where cover bolts are exposed, the corner bolts shall be welded or otherwise
rendered tamperproof.
3.2.2.9.2 Tank grounding provision shall be in accordance with paragraph 7.6.4 of ANSI C52.12.26-1992.
3.2.2.9.3 Locking bolts shall be pentahead style.
3.2.2.10 OVERCURRENT PROTECTION
Overcurent 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:
Ta61a 2 - Fusina Ranuimmanlx
Expulsion Fuse Continuous
I Current Limiting Fuse
Stock
kVA
Current Rating
Continuous Current Rating
Number
Ca acl
Part Number*)
Part Numbar`
36&300-00
75kVA
104
304
368-M08
4000353C06
3544030M61M
001'A
6
150kVA
I
40A
13554404010161
-1
(13C08)
M)
I OVA
I
I
36&300-031
(4000353C10)
(3544065M61M)
368-300-051
500kVA
40A
100A
4000353C 12
3544100M71
368300-075
750kVA
65A
125A
3W300-076
7501kVA
(4000353C 14)
(3544125M71M)
368-300-100
1000kVA
368-300-101
1000kVA
12000kVA
I(4000353C17)
fuses
I
36&300-20115'
(3544125M71M1125A
368-30D251
12500kVA 1125A
Hi-" OL Link C05CB
I 50A : Parallelfuses
r71M)125A
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
Opal Dick - 368dash300.pdf _ Page 10
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 HOSE 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 ary 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
Opal Dick- 368dash300.pdf Page 11�
FIANGEWMIN
1 117 MAX
I KLOWt
+ — +
he
i j.L + —
Ve —Z *
iM -- - - -
Ia
I I I I I II
C�—
45 1 45 1 65
MIN•5 dBs
A�
KVARATINGS
LOWVOLTAGE
RATINGS
COMPARTMENT
DIMENSIONS
(MINIMUM)
BUSHING
HEIGHT
A•
B
7S15g
ALL
Mz5
z]
TtS500
ALL
M
31
7/ 1=
4 Y/]n,] Y 11M
a
0
150d]511g
IaBYln7
25
49
NOTE.
Deml mik hnenebns.
"See Fq5
Al tllnwviom in (incMsl
Mavmum Umwse INN Al one Imn clearance iron edge W ped (Fg. B).
WIN
MIN'
Figurer -Accessory compartment &Bushing Dimensions (Config. 1)
REV. SYM: MM
11
368-300
Opal Dick - 368dash300.pdf Page 12
r--2.65 MIN._..
GGr}
j' 'YANK Sr)gf CE
L=
iANK $UAfACE
t Y [
1 �
�4R i I
t 9 I
i h i
i
1 0.75
rta
0
INSIDE
CaVe Acw wy Parking5tand
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
36&300
Opal Dick- 368dash300.pdf Page 13�
4.0" ,. A A A
X1 i� �� X3
1 � 1
i\ XO �\ X2
\
l
q.
B
CL
REV. SYM: MM
6" RADIUS
TYPICAL 3
PLACES
KVA RATINGS
LOWVOLTAGE
RATINGS
A
B
75-150
ALL
4.75
8
225-500
ALL
6
8
750-2500
480/277, 208Y/120
6
10
Figure 5- Staggered Low -Voltage Bushing Arrangement
(all dimensions minimum inches).
NOTE:
An area having a 6 inch radius around each bushing
shall remain clear of obstructions such as gauges, etc.
13
368-300
Opal Dick - 368dash300.pdf Page 14�
REV. SYM: MM
KVA
I SERIAL
I PAD DIMENSIONS (inches)
A
I B
C
I 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
Opal Dick,- 368dash300.pdf Page 15
REV. SYM: MM
TABLE I
ACCESSORY EQUIPMENT
ACCESSORY I INA
F75-150 F 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 pluci
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-vacwm gauge
X
X
Oil gauge
X
Themiorneter
X
X
X
Secondary CT mounting holes
(4 holes on 4 318" x 5 5/8" centers)
X
X
X
Manual/automat is pressure relief valve
X
X
X
15
36&3011
Opal Dick - 368dash300.pdf Page 16
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 W grounded "Y" distribution system.
3.3.2 DESIGN AND CONSTRUCTION
The requirements for radial -iced transformers shall be the same as those of loop -feed with the following
exceptions:
3.3.2.1 RATINGS
Ta61a 3 . Radial.Faad
Stock No. WA Low
Voltage
Impedance
Bushing Type/Config.
High Voltage Low Voltage
368-300- 006
7P
208Y/120
1.9%
1— d f h
368-300- 007
75
1 480Y/277
1.9%
1 d f h
d Per Figures 5A, & 7 of ANSI C57.12.26-1992 (In-Une) EXCEPTION: high voltage bushings shall be 32 - 36 inches
above the base of the transformer
f Figures 9(a) & 9(d) of ANSI C57.12.26 - 1992 (stud with 4-hole part)
h Figure 8(a) of ANSI C57.12.26-1992 (Staggered)
3.3.2.2 ACCESSORY CABINET
The accessory cabinet shall be dimensioned in accordance with Fig.7 of ANSI C57.12.26-1992.
4. QUALITY ASSURANCE
4.1 GENERAL
4.1.1 RESPONSIBILITY FOR INSPECTION
Unless otherwise specified, the vendor is responsible for the performance of all inspection requirements as
specified herein. Except as otherwise specified, the vendor may utilize his own facilities or any commercial
laboratory acceptable to the City of Fort Collins. The City reserves the right to perform or witness any of the
inspections set forth in this Specification where such inspection are deemed necessary.
4.1.2 TEST REPORT
The manufacturer shall furnish to the purchaser certified copies of the results of all tests prior to payment.
Copies shall be sent to the Design Section as well as with the invoice. Unsigned copies are not acceptable
even if accompanied by a signed cover letter. The Quality Control Manager shall review and sign each test
report.
4.2 TEST CONDITIONS
Unless otherwise specified, testing defined in Section 4.6 shall be conducted under the following conditions:
4.2.1 REFERENCE TEMPERATURE
The reference temperature to which losses, impedance, regulation, aril efficiency are corrected shall be 85°
C.
4.2.2TOLERANCE ON IMPEDANCE VOLTAGE
Tolerance shall be as specified in ANSI C57.12.00.
16
368-300
4� s� hG
M
City of Fort Collins
Page Number: 2
City of Fort Collins
Date: 08/04/06
Purchase Order Number: 6604957
ueuvery vane: usnorui Buyer: DICK,OPAL
Purchase vrcler number must appear on invoices, packing lists, labels, bills of lading, and all correspondence.
115-w
Line Qty UOM Description Unit Price Extended Price
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 - 210
FULL LOAD LOSS - 657
TOTAL LOAD LOSS - 867
IMPEDANCE 1.90%
DELIVERY: 32 WEEKS OR
CITY OF FORT COLLINS MAY
CONSIDER THE CAPACTIY
PLAN ARRANGEMENT AS
PROVIDED IN THE QUOTATION
FOR THESE UNITS WITH
SPECIFIC SHIPMENTS AND
QUANTITIES TO BE
Opal Dick - 368dash300.pdf Page 1
REV. SYM: MM
4.2.3 TOLERANCE ON IMPEDANCE VOLTAGE ON A TAP
The percent departure of tested impedance voltage on arry tap from tested impedance voltage at rated
voltage shall rat be greater than the total tap voltage rage 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.
T.W. A _ C......•i..... 1 T..nM
TEST
TEST PARAGRAPH
REQUIREMENT OR REFERENCE
Examination Of Product
4.6
3.0 3.1 3.2 3.3 hiss ification
Ratio
4.6
ANSI C57.12.00 Section 8
Polarity And Phase Relation
4.6
ANSI C57.12.00 Section 8
Excitation Loss
4.6
ANSI C57.12.00 Section 8
Excitation Current
4.6
ANSI C57.12.00 Section 8
Impedance & Load Loss
4.6
ANSI C57.12.00 Section 8
Temperature Tests*
4.6
ANSI C57.12.00 Section 8
Dielectric Tests
4.6.1
3.2.2.2 his s ification
Im Ise Tests
4.6.2
3.2.2.2 hiss cation
Leak Testing
4.6.3
3.2.2.8 & 3.2.2.9 hiss ification
Noise Testing*
4.6.4
3.2.2.12 hiss specification)
vneunt per design per order.
4.4 TEST METHODS -- FUNCTIONALTESTS
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 arKYor 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.
4.4.2IMPULSE 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 '/z 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 autornatictmanual pressure relief device must be removed for this test).
4.4.4 NOISE TESTING
Noise testing shall be conducted in accordance with applicable NEMA Standards.
5. PREPARATION FOR DELIVERY
Transformers shall be prefilled with the appropriate amount of transformer oil and shall be shipped by open -bed truck. Units
shall be packaged in such a way as to provide for ease of handli ng and to protect units from shipping damage. Units shall be
folly 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 arty 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 andtor supplemental instructions.
17
368-300
Opal Dick- 368dash300.pdf Page 18
REV. SYM: MM
6. DEFINITIONS AND ABBREVIATIONS
• Vendor or Supplier. The manufacturer ardor manufacturePs 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 ory -Volts.
• WA -1000 Volt-amperes.
18
368-300
Opal Dick - 368dash300.pdf Page 1
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 ermvelope.
19
36&300
Opal Dick - 368dash300.pdf Page 2]
REV. SYM: MM
55' I,
17" I PR1I1dRYV SEC.
6
T
LENLfe dND
WIDTH
10" d0' 3'
r
7 5T/8' — _v _ P F3'
T T
Noted an Pod VAtw1d -
I. Concnle rnuet be J.000 ad m7rhnam.
(.lov'mum
] course o0vapota ore 1 1/2 ivdles.
9occe repJyements ter pod and Primary 9lidcnot cabinet *11 generally
be e X IT. Fmtcm to be co ddmed In jacotlQ the Pad include -
1. AetaalDldy - TM tlonsformer pod Imal by occeelRXe to
line boom troche nufaaed for the instolatkn and remarcl of
hsovy traneformers. Such dcceedhilily dedl not req,We
atrus.an a adpcwt property.
2 Prsrieity of Efubdinla. *411. 84rrrms. and/w ave 0 go -
In 0001Dan to the alewanan rdqurm tar ialallalian and
nnavd. the nfn'mam rlawancd n front of the trw5hrmdr Pad
shall he eight (6) feel and the minimum clearance from of
olhw sign anal be wft (3) fool If lie auhdn9 man an
dvamnny. doermea to the saga of the twafdrmx pod deal
be maoeures horiyantolly from the outer edge gf the o,wh r%
Troafwmwe #Hough JDO KVA may ba tnsidled ands the
avemang If WIN Wnedl deans 11Art66ll pal pod e+a the
ovorhon9 10 at host 26 toot wM the losat%n is eeeeeaible to
line beam truche
3. Coda will Standards - In add -ton to the oboes. the
inalallatien chat canfwm In the Notbnal Electric Cede and
federal. slate w10 tar Cog" and Slendg109.
2
S 25 93
REV N0.
DATE
DWN
D.E. APP
I MG. ENG APP
DIST APP
CITY OF FORT COLLINS
DWG 3PHASEI
LIGHT AND POWER DEPARTMENT
TRANSFORMER PAD DESIGN
75 — 500 KVA
Ira.Iepdrlw
3 PHASE
Figure IA- Pad Design (75 - 600 KVA)
20
368-300
Opal hick - 368dash300.pdf Page 21
REV. SYM: MM
I I
I I
I
_
_-4---i--I--
T.
9
t7• I PRIWWY sEL0N9ARY I
I
8• — — pot— +
a -�
7"
1>3• Pe" — P7" lY --i
rU.R Y7 REMR
—ly `� 1 tcr(tY Md VIarY
1
1J
Notes an Pad mound, -
1. Concrete most be 3.00D pal minrnum.
2. mamum anree aggregate ace 1 112 rtdtm
9pace rail onto far pee env pt-r klly attaching cahnot poll generally
be 5 x 12'. factors to tre conalderod In lacatrtg the pod Income -
f Aeeeesbdrt - me lmnafarrrter pm aaeJ "at he aba to
The bean tivam equipped for the Installation and remorol of
heavy tranatalraara. Such decomalay anal not ro¢leo
nlrtallan an adjacent property.
2. f+ryomny of 6.Iconggs. *ally 9or0arm, one//m tyvarnonga -
h addit'un to the cleanness 'attained (d - atulobbn and
ramaeel. pta mntnura deGralea m front of me trenawn ar pod
"I as arghl (6) feel a'Itl Inv ni mmYa m deanaa sm aall
other rides ehdl be four (4) fret, If the 1,00ig hos on
aereaar} aaeraneo to Ina saga of the tratafarmor pad aroma
he measured hariranlally Gain the oulr edge of the overhand.
Tretoformore tlrw.yr JDO KyA may be metalled under the
averneng a me vertaxa aaraan toshleon the pod and ma
overhang is of legal 25 teal and the Itxzpan is acwsaLa to
me add, troche
anordr Standards
I coniom to lNotlonoi EIWLM
Irt�clutles
s tan* Case ma
ledorol, state and city codes and standarCy
11 02 B0
RE NO.
DATE
QWN
D,E, APP
I MG. ENO APP
015T, APP
CITY OF FORT COLLINS
DWO 3PHASE2
LIGHT AND PO ER DEPARTMENT
TRA SF❑R ER P ❑ DESK
�a� ea1e�
500 - 1000 K VA
a.ae`r aeyw
3 PHASE
Figure 2A - Pad Design (500 -1000 KVA)
21
36B-300
Opal Dick- 368dash300.pdf Page 222
REV. SYM: MM
1^---- 107•�f-
" I.
--I--I--I!- 09
7; I
�
15' mR NADr
IwWINDOWseeraaw IL
t
I
6' -- —+. —
-T
T L
2B' 23' 26' 29'-�
II FIVE 97 RETAe
3" LEWD AND VIDtlt
1
7 55//B — — — — — ` 3'
T
Not" w pad Gaul -
1. URC'Cto mue be 3,00D pal mmmum.
2, ogmbm cootea awssoU slap 1 1/2 inches,
Spore raquysmenta nor pan and linmay atbtcnng rabnot Me grwdry
ba V % 12'. Foeto s to be coneldred in iecotlrng the Rod indude —
1, ACC@tlethty — Me lrahafdnher pea shall be CetMMee t0
line boom trucks maAdoad for the installation and rtwagl of
"Mary loonatarmpR Such orr@aRelay Snail not requve
intruolon rn odimenk prapartl.
i Prohdmtty of Buidnge, *'din, Borriaro, and/err Omrhangs —
In nation to the doormats required for inetall"nn and
romowk the rhrin'mVO Clgmae in front at the tlotMlarmar pad
shall be eight (0) feel and the mhnrnum daoronce Front oil
other aids shall he Far (4) feel If the building has m
"Pi". thaerares to this Mdga of the brGrerarmr pea reel
be maoourod horirontoly Irom the ouler edge of the Rlerhong.
Trmaldrmere Mraugn 700 KVA may 0a k11@Ilee under ma
Myrhrlg If mM reroral d"Oh" bMttl@@r the pea one this
wrhang Is at local 15 feat and the location is aweedblo to
Ina boom iruay.
1. Omsk and Stanaerce — n atltllten to Ins seem, the
'retaliation elan <m1Mrm to the National Elmt,e Coo@ and
fadrd, stale and efly wdw and ztmcb der.
11/D2/90
REV N0.
DATE
D N
D.E APP
DSNG. ENG APP
DIST. APP
CITY OF FORT COLLINS
DEC 3PHASE3
®
LIGHT AND POWER DEPARTioiENT
ID00 - 2500 KVA
3 PHASE
Figure 3A - Pad Design (1000-2500 KVA)
22
36&300
Opal Dick - 368dash3OO.pdf Page 23_
REV. SYM: MM
APPENDIX B
Transformers purchased under this Specification shall be of the make shown below. Manufacturers not listed below may
submit written proposals demonstrating compliance with these Specifications for consideration of addition to the accepted
manufacturer list prior to the next request for bids. In addition to inclusion on the list below, manufacturer's equipment must
also satisfy all requirements of this Specification to be acceptable.
TABLE 3B
MANUFACTURER SERIAL NO.
Cooper Power Systems
All
ASEA BrowrrBovari (ABB)
All
Howard Industries
All
Parwaels Transformers
All
The manufacturers in the following list have been conditfonallyapproved and may bid as an alternate. The definition and
intent of "Conditional Approval" of a manufacturer is to allow the City to gain some experience with the manufacturer's product.
Should a conditionally approved manufacturer be the evaluated low bidder, the City reserves the right to award all, part, or
none of the order to them, dependant upon the current creeds of the City for that item or items.
23
368-300
Opal Dick - 368dash300.pdf T Page 24
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
3W300
Opal Dick - 368dash300.pdf Page 2]
REV. SYM: MM
TRANSFORMER LOSS EVALUATION - AVERAGE LOSSES
City Order No. SIN _
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 lire (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 riot 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 Form, whichever is most favorable
to Light and Power.
25
36&300
Opal Dick - 368dash300.pdf � Page 2
INDIVIDUAL TRANSFORMER LOSS EVALUATION
City Order No.
Manufacturer
KVA/Unit
LINE
DESCRIPTION
(1) _
Tested core losses
(2)
Quoted core losses
(3)
Excess core losses
line (1) less line (2) but rat less
than zero
(4)
Percent difference
Line (3)-line (2) x 100
(5)
Tested total losses
(6)
Quoted total losses
(n
Excess total losses
Line (5) less line (6) but rat less
than zero.
(8)
Percent difference
Line (n - line (6) x 100
(9)
_ Tested copper losses
(10)
Quoted copper losses
(11)
Excess copperlosses
Line (9) less line (10) but not less
than zero.
(12)
Penalty for excess core losses
Line (3) x $
(13)
Penalty for excess capper losses
Line (11) x $
(14)
Penalty to be assessed manufacturer
Une (12) plus line (13)
SIN
Invoice No.
Date Prepared By:
Design Engineering
AMOUNT
REV. SYM: MM
26
368-300
Date: 08/04/06
Citgof Fort Collins
Page Number: 3
City of Fort Collins
Purchase Order Number: 6604957
veovery vate: usnorvi Buyer: DICK,OPAL
rurcnase urger number must appear on invoices, packing lists, labels, bills of lading, and all correspondence.
Note:
Line Qty UOM Description Unit Price Extended Price
STATED WITHIN THE NEXT
7 CALENDAR DAYS BY
WESCO
Total
$196,530.00
City of Fort Ili s 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 - 368dash300instructions.pdf Page
Revised 12/13/96
Special Conditions and Supplemental Instructions to Bidders
Applicable to Specification 368-300
A. Data to be supplied with Bidder's Proposal
The following data shall be supplied with the bidder's proposal in addition to that information required by
the "Invitation to Bid" and the "Purchase Requisition".
1. Impedance volts in percent (%) at full load, high voltage to low voltage at 85°C
2. No load and total losses at 85°C
3. Delivery in weeks
4. A statement indicating compliance with our Specification with exception or a detailed list of exceptions.
5. Escalation IS / IS NOT applicable for the 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. Test reports shall accompany the invoice. If test reports do no accompany the invoice, late payment penalty
charges incurred due to delays in obtaining the test reports will not be paid. Certified copies of test reports
shall be sent to the Standards Engineering Section, Fort Collins Utilities - Light & Power.
3. Loss penalty credits and escalation charges shall be itemized on the invoice.
Opal Dick - 368dash300.pdf Page 1
THE CITY OF FORT COLLINS
Light and Parer Department
P.O. Box 580
Fort Collins, CO 80522
SPECIFICATION NO: 368-300
TITLE: PAD -MOUNTED COMPARTMENTAL-TY PE.THREE-PHASE
DISTRIBUTION TRANSFORMERS
VNTH SEPARABLE
INSULATED LOAD BREAK HIGH -VOLTAGE CONNECTORS
I
APPROVED BY:
Kraig Bader
Standards Engineering Division Manager
ORIGINATION DATE: 8112t83
REVISED: 2/212005
Opal Dick - 368dash300.pdf Page 2�
REV. SYM: MM
ITEMS COVERED BY THIS SPECIFICATION
DESCRIPTION
STOCK
NO.
SPECIFICATION NO.
SERIAL
75
KVA,
208Y/120 RADIAL
368300
-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
20BY1120 LOOP
368-300
-015
150
KVA
480Y/277 LOOP
368-300
-016
300
KVA
208Y/120 LOOP
368-300
-030
300
K\/A
480Y/277 LOOP
368300
-031
500
KVA,
208Y/120 LOOP
368-300
-050
500
KVA
480Y/277 LOOP
368-300
-051
750
MA
208Y/120 LOOP
368-300
-075
750
KVA
480Y/277 LOOP
368-300
-076
1000
K\/A
208Y/120 LOOP
368-300
-100
1000
KVA
480Y/277 LOOP
368-300
-101
1500
KVA
480Y/277 LOOP
368300
-151
20DO
KVA
480Y/277 LOOP
368-300
-201
2500
KVA
480Y/277 LOOP
368-300
-251
2
366-300
i Opal Dick - 368dash300.pdf Page 3]
REV. SYM: MM
REVISION DESCRIPTIONS
REVISION DESCRIPTION Previous onfile
APPROVED
REVISION FF:
Tim Sagan
• Add Paragraph 5.2.2.9.3: pentahead locking bolts
Susan Coram
• Paragraph 3.2.2.13.1: add glossy requirement.
10-18-95
REVISION GG:
Susan Coram
• Title page: Remove revised date
Tim 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'Y' configuration for the primary bushing arrangement vs. an
Tim Sagan
in -line arrangement.
613/99
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 Sagen
9 /14 / 2000
REVISION KK
Kraig Bader
Added drawing la to describe cable accessory parking stand detail, revise to reflect
Tim Sagen
current editions of national standard s, charge impedance on 368-300-009 from
9 / 11 / 2001
1.7% to 1.9%.
REVISION H
Kraig Bader
• Charge fusing from oil -immersed cmerk sensing weak link cartridge to a current
4/2/2004
sensing bay-o-net fuse link in series with an ELSP current limiting backup
fuse (clause 3.2.2.10).
• Charge column header for impedance table in 3.2.2.1 to clarify that impedance
numbers are nominal values. (Tolerance s are consistent with ANSI C.57.12.00-
2000)
• Changed wording from "Mr. Ouch" in 3.2.2.15 to'Waming label"
Revision MM
Kraig Bader
Charge clause 3.2.2.10 to specify current sensing bay-o-rnet 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
Opal Dick - 368dash300.pdf Page 4�
TABLE OFCONTENTS
ITEMS COVERED BYTH IS SPECIFICATION ._._....._ .___......_. .._-_.._._ ...... ......
REVISION DESCRIPTIONS.„ ... .„.„.._..... .......... _. ._........... ._...... „_... „..„..„..„.. .._.
1. SCOPE ..„„„.„..... .......... -- ._._..---. ........... ..„...„.„..„ ............. .... .._....... .... ...„...... ....... ...
2.APPLICABLE DOCUMENTS...... .„_......_.. ... _..... __. ._.._._..„ ...„._.....„ ..___....._ ..... ._.....
3.REQUIREMENTS....... ........ „... .......... „_._....__. _.._._.._. ._._.._.... ......„..„.._ .___._.._ ......
3.1 GENERAL REQUIREMENTS FOR DESIGN .......... ................ ................ ................ ................
3.2 SPECIFIC REQUIREMENTS FOR DESIGN OF LOOP -FEED UNITS........... I ............... .....
3.3 SPECIFIC REQUIREMENTS FOR DESIGN OF RADIAL -FEED UNITS ...........................
A nlTAITTV ACCTTRANVF
REV. SYM: MM
_.........._.._... .._...„.._ 2
.. . _.. _...... _. ... _..... ..3
..._.._._.... ..„.._...._ ..5
_..__. ............. .._5
. _.......... ._......_..
........... ............... .......5
.. ................ .............7
........ ................ ......16
.... _..... . ... ........ ... .16
......... ................ .....16
................ .....16
....... .....I .......... .......17
................ ................ 17
_.. ......... _. . _...... 17
....... ._....._.._. .„„„1 S
... ............ ........19
.... _. ._.._.. ...... ..23
„. .............. ._._..2 4
25
................ I ........ I...... .......
................ ................ ........26
4
368-300
Opal Dick - 368dash300.pdf Page 5
REV. SYM: MM
SPECIFICATION FOR
PAD -MOUNTED COMPARTMEN TAL-TY PE, 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, compartmen tal-type distribution transformers rated 2500 kVA and
smaller, high voltage 13,200 Grd Y/7620 volts, with separab le insulated load break high voltage connectors. These
transformers are used for step damn purposes from an underground primary cable supply.
This standard generally conforms to ANSI requirements for pad -mounted compartm ental-type, self -coded, three-phase,
distribution transformers for use with separable insulated high -voltage connectors, C57.12.26.
2.APPLICABLE DOCUMENTS
The following documents forth 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 transformer s, and shunt reactors, general requirements for
• ANSI C57.12.26 - Pad mounted, compartmental-ty pe, self -coded 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 arid, unless otherwise specked, 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) ANSI C57.12.26
c) Other applicable ANSI and NEMA Standards.
3.1.2 KILOVOLT -AMPERE TEMPERATURE RATINGS
lQovolt-ampere ratings are continuous and are based on riot 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-t ype transformers shall consist of the transformer tank, high -voltage
cable terminating compartment, and the low -voltage cable-terminatin g 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
Opal Dick- 368dash300.pdf Page 6�
REV. SYM: MM
comer bolts shall be welded or otherwise render ad tamperproof. There shall be no opening through
which foreign objects such as sticks, rods, or wire s 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 transfomner 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
mirimum pad dimensions are shown in Fig. 6 of this Specification.
3.1.4 LOSSES
The total losses of a transformer shall be the sun 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 Instructions to Bidders." Transformers will be evaluated on excitation
losses and PR 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 Evaluat ion $) (Avg. No Load Losses — Quoted No Load Losses)
+ (Load Loss Evaluation $) (Avg. Load Losses — Quoted Load tosses)]. 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