Resolution No. 82871
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8 � t
RESOLUTION NO. 8287
A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF
VERNON APPROVING AND AUTHORIZING NOTICE INVITING
SEALED PROPOSALS OR BIDS FOR THE PURCHASE OF 19
PADMOUNTED TRANSFORMERS FOR THE LIGHT & POWER
DEPARTMENT
WHEREAS, the Light & Power Department is in need of 19
three-phase, deadfront, radial, self cooled, padmounted transformers
(the "Transformers") to replenish the stock for projected service
requirements for fiscal year 2003-2004 regarding the City of Vernon's
underground distribution system; and
WHEREAS, on September 23, 2003, the Finance Committee
considered the recommendation of Bruce V. Malkenhorst, Director of
Finance, dated September 18, 2003, that authority be granted for the
Purchasing Agent, or his designee, to seek formal bids for the
purchase of the Transformers; and
WHEREAS, Specification No. TR2-2003 dated September 15,
2003, (the "Specification") has been prepared for the purchase of the
Transformers; and
WHEREAS, the City Council of the City of Vernon has
determined that it is in the best interests of the City of Vernon that
bids or proposals be solicited in accordance with applicable State law
and the Vernon City Code.
NOW, THEREFORE, BE IT RESOLVED BY THE CITY COUNCIL OF THE
CITY OF VERNON AS FOLLOWS:
SECTION 1: The City Council of the City of Vernon hereby
finds and determines that the recitals contained hereinabove are true
and correct.
T .
1 SECTION 2: The Specification, a copy of which is attached
2 hereto as Exhibit "A" and made a part hereof, is hereby approved by
3 the City Council of the City of Vernon.
4 SECTION 3: The City Clerk of the City of Vernon, or his
5 designee, is hereby directed to give notice, in writing, inviting
6 sealed proposals or bids for the purchase of the Transformers in
7 accordance with the Specification, and in accordance with this
8 resolution.
9 SECTION 4: There being no newspaper of general circulation
10 printed, published or circulated in the City of Vernon, the City Clerk
11 is hereby directed to post said notice, or cause the same to be
12 posted, in three of the most public places in the City of Vernon, to
13 wit: the northwest corner of 38th Street and Santa Fe Avenue, the
14 northeast corner of Leonis Boulevard and Pacific Boulevard, and on the
15 bulletin board in the lobby of the City Hall of the City of Vernon,
16 located at 4305 Santa Fe Avenue, in said City.
17 SECTION 5: The City Clerk of the City of Vernon is hereby
18 directed to post said notice forthwith and the first posting of said
19 notice shall be at least ten (10) days before the opening of the bids
20 for the proposed contract. Said notice shall provide that sealed
21 proposals or bids will be received by the City of Vernon at the office
22 of the City Clerk, or his designee, at the City Hall, 4305 Santa Fe
23 Avenue, Vernon, CA 90058-0805.
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SECTION 6: The City Clerk of the City of Vernon shall
certify to the passage of this resolution, and thereupon and
thereafter the same shall be in full force and effect.
APPROVED AND ADOPTED this 1st day of October, 2003.
ATTEST:
BRUCE V. MALKENHORST, City Clerk
EONIS C. MAL RG, May r
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STATE OF CALIFORNIA )
) ss
COUNTY OF LOS ANGELES )
I, BRUCE V. MALKENHORST, City Clerk of the City of Vernon,
do hereby certify that the foregoing Resolution, being Resolution No.
8287, was duly adopted by the City Council of the City of Vernon at a
regular meeting of the City Council duly held on Wednesday, October 1,
2003, and thereafter was duly signed by the Mayor of the City of
Vernon.
(SEAL)
x 4 � '10, � , el �"- ��-
BRUCE V. MALKENHORST, City Clerk
- 4 -
EXHIBIT
0
SPECIFICATION NO. TR2-2003
PADMOUNT TRANSFORMER
CITY OF VERNON
LIGHT AND POWER
SEPTEMBER 15, 2003
SPECIFICATION NO. TR2-2003
Approved Manufacturers/Suppliers .
1. Cooper Power
c/o Mark Christensen
Utility Products
44-909 Golf Center Pkwy, Suite#12
Indio, CA 92201
Phone: (760) 863-1660
2. ABB Inc.
Attn: Jeff Vivian
2945 Harding Street, Suite 207
Carlsbad, CA 92008
Phone: (760) 720-3156
3. Howard Transformers
c/o Young and Company
530 South Marengo Ave
Pasadena, CA 91101
Phone: (626) 795-9955
4. General Electric Company
c/o Southwest Power
9837 Pioneer Blvd.
Santa Fe Springs, CA 90670
Phone: (562)801-4577
5. Pauwels Transformers
c/o Bernie Schweigert
Pacific Utilities Supply Company
2475 Estand Way
Pleasant Hill, CA 94523
(Phone): (888) 777-2667
Prepared by:
se Lu , P E.
Elec cad E plineer
Approved by:
Director of Engineering and Operations
CITY OF VERNON LIGHT AND POWER
PADMOUNT TRANSFORMER
TECHNICAL REQUIREMENTS
1.0 SCOPE
Supplier shall furnish all work for providing three-phase, deadfront, radial, self
cooled, padmounted transformers for use on the City of Vernon's underground
distribution system. The transformer sizes that the City requires are listed in
Attachment A. This list does not preclude the possibility of ordering voltage and
KVA ratings not listed under this specification.
2.0 APPLICABLE STANDARDS
A. The transformers shall conform to the applicable sections of the following
standards to the extent referenced in this Specification, and as amended to
the date of this Specification which, by reference, are included as part of this
Specification.
1. C57.12.00
IEEE Standard General Requirements for Liquid -
Immersed Distribution, Power, and Regulating
Transformers.
2. C57.12.26
Requirements for Padmounted Compartmental -
Type, Self Cooled, Three -Phase Distribution
Transformers for Use with Separable Insulated
High Voltage Connectors, High Voltage
34500GrdY/19920 Volts and Below, 2500 kVA
and Smaller.
3. C57.12.28
Padmounted Equipment —Enclosure Integrity.
4. C57.12.90
IEEE Standard Test Code for Liquid -Immersed
Distribution, Power, and Regulating Transformers
and IEEE Guide for Short -Circuit Testing of
Distribution and Power Transformers.
5. C57.91
Guide for Loading Mineral -Oil -Immersed
Overhead and Padmounted Transformers Rated
500 kVA and Less with 650C or 550C Average
Winding Rise.
6. C57.92
Guide for Loading Mineral -Oil -Immersed Power
Transformers Up to and including 100 MVA with
650C or 550C Average Winding Rise.
7. C57.106
IEEE Guide for Acceptance and Maintenance of
Insulating Oil in Equipment.
B. In the event of conflict between the codes and standards and this
Specification, Supplier shall notify City of Vernon Light and Power
Department and secure a written clarification before proceeding with the
work.
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CITY OF VERNON LIGHT AND POWER
PADMOUNT TRANSFORMER
TECHNICAL REQUIREMENTS
3.0 SERVICE CONDITIONS
3. 1. Environment
A. The transformers shall perform in accordance with all provisions of
the Specification while subject to the service conditions specified in
ANSI/IEEE C57.12.00.
B. The transformer shall be suitable for 30 years of use on the City of
Vernon's electric system when installed in accordance with the
service conditions set forth in ANSI/IEEE C57.12.00-1987, Section
4.0, in its entirety.
3. 2. Seismic and Impact Loadinq
A. Before and during installation, the transformers shall withstand,
without damage, rough handling such as bouncing on a truck when
filled with insulating medium and impacting against or upon rigid
structures at speeds up to five feet per second, and being lifted by
two bosses or lifting second, and being lifted by two bosses or
lifting bolts at any angle. Following these conditions, the
transformers shall be capable to being energized without a pre-
operational test.
B. After installation and during the 30-year life of transformer,
transformer will be subject to occasional earthquake motions (0.2g
horizontal and 0.13g vertical) along with significant vibrations from
traffic and from adjacent equipment.
3.3 Pre -installation Inspection
The City of Vernon will, at its discretion, provide a pre -installation
inspection of each transformer.
3.4 Operating Duty
For its 30-year life, each transformer shall be suitable for operation under
short circuit conditions as stated in ANSI/IEEE C57.12.00-1987, Section 7.1.
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CITY OF VERNON LIGHT AND POWER
PADMOUNT TRANSFORMER
TECHNICAL REQUIREMENTS
3.5 Shi in
A. All transformers shall be shipped to the City of Vernon, Soto Yard located
at 2800 Soto Avenue, Vernon, CA 90058. Supplier's price shall be F.O.B.
Soto Yard.
B. Transformers will be delivered on a flatbed truck for side unloading by
forklift at ground level
C. Delivery will be scheduled Monday through Thursday 7:00 a.m. to 3:00
p.m. Supplier shall provide City with 48 hours notice prior to delivery.
4.0 RATINGS
4.1 Sizes
The transformers shall be sized as shown in Attachment A.
4.2 High Voltage Ratings
Transformers shall be 60 Hz with BIL ratings as shown in the table below.
Transformer and Connector High oltaa Ratings and Electrical Characteristics
Transformer
Electrical Characteristics of the Completely Assembled
High -Voltage Connectors''
High -Voltage Rating Z'
BIL
60-Hz dry
one minute
Phase -to -Ground /Phase -to-
Phase (kV)
(kV)
withstand
(kV)
High -Voltage Ratings
(volts)
Minimum
BIL3. (kV)
Single High -Voltage
7200
16340
75
95
8.3/14.4
8.3/14.4
95
95
34
34
Series -Multiple High -
Voltage
7200 x 16430
75 x 95
8.3/14.4
95
34
For complete connector rating, see ANSI/IEEE 386.
2 Transformers are suitable for connectors with phase -to -ground or phase-to-ground/phase-to-phase
high -voltage ratings as listed.
3 Arrester coordination may require higher BIL on multiple connection than indicated to achieve a
minimum protection level of 20%.
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CITY OF VERNON LIGHT AND POWER
PADMOUNT TRANSFORMER
TECHNICAL REQUIREMENTS
4.3 Low Voltage Rating
The secondary voltage shall be one of the following. The basic insulation
level (BIL) of the secondary voltage shall be 30 kV:
480Y/277
208Y/120
4.4 Configuration
All transformers shall be Delta -Wye configured with low voltage neutral
having a fully insulated Xo bushing with a removable ground strap.
4.5. Impedances
Transformer impedance shall not be less than those shown in the table
below. All transformer testing to determine transformer impedance shall be
based on the base kVA rating of the transformers at the 55 degree or 65
degree temperature rise. The transformer impedances shall be shown on
the transformer nameplate.
Minimum Transformer Impedance
KVA %Z
300-500
4.0
750-2500
5.75
3750
6.00
5.0 CONSTRUCTION FEATURES
5.1 Coil and Core Construction
A. The transformer core shall be of high efficiency rectangular wound core
designed in five -leg or triplex configurations. The core shall be made from
one of two processes: single -turn laminations of high quality, grain
oriented silicon core steel or amorphous core (i.e metallic glasses metal).
B. The transformer coils shall be designed to maintain their nameplate KVA
rating throughout the normal temperature range of operation which shall
be 650C (80°C hot spot). All materials used shall be of the 65°C, 80°C hot
spot class. All materials shall be thoroughly tested for compatibility with all
transformer components before being assembled. The primary coil shall
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CITY OF VERNON LIGHT AND POWER
PADMOUNT TRANSFORMER
TECHNICAL REQUIREMENTS
5.2
5.3
be manufactured from heavy varnish or paper insulated aluminum or
copper wire. The secondary coil shall be manufactured from full width
aluminum strip whose edges are finished to prevent burrs and insulated
with epoxy -diamond paper between layers of the conductor.
Insulatinq Fluid
A. The transformer insulating fluid shall be standard electrical grade mineral
insulating oil. The insulating oil shall be tested and degassed to assure a
chemically inert oil. The padmount transformers shall be furnished with oil
which meets the requirements specified in ASTM Standard D 3487 for
mineral insulating oil, except that the DBPC content (% by weight) shall
not be less than 0.15. The insulating oil in the equipment shall conform
with ANSI C57.106.
B. All transformer oil shall be tested for polychlorinated biphenyl's (PCBs) per
ASTM D4059 and certified as having no detectable levels of PCB.
Taps and Changers
A. The transformers shall be furnished with full capacity high -voltage taps.
The tap changer shall be clearly labeled to reflect that the transformer
must be de -energized before operating the'tap changer as required in
Section 3.3 of ANSI C57.12.26. Padlocking provisions are available for
lever or hotstick operable handles. Tap changer operating mechanisms
shall be permanently identified to show "De -energized Operation Only'.
Decals and stencils are not acceptable.
The unit shall have one of the following tap configurations:
Two - 2Y2% taps above and below rated voltage such as the
following:
VOLTAGE
FULL CAPACITY TAPS
16,340
17,200/16,770/15,910/15,480
7,200
7,560/7,380/7,020/6,840
B. The tap changer position indicating nameplate shall have numerals or
letters that are clearly legible and of permanent quality. Decals and
stencils are not acceptable.
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CITY OF VERNON LIGHT AND POWER
PADMOUNT TRANSFORMER
TECHNICAL REQUIREMENTS
5.4 Gauges
A. All transformers shall have a dial -type, magnetic, oil level gauge to provide
a positive means of determining the required oil height. The preferred
location of the gauge is above the switch handles, to ensure the switch
remains under oil
B. All transformers shall have a dial -type, magnetic, temperature gauge to
provide a positive means of determining the transformer temperature. The
required location of the gauge is in the low.voltage compartment above
the bushings.
5.5 Drain and Replacement Provisions
Insulating medium drain and replacement provisions shall be furnished as
specified in ANSI C57.12.26.
5.6 Tanks and Terminal Compartment
A. The transformer tanks, and all external appurtenances, shall be in
accordance with ANSI C57.12.26. The overall dimensions and various
appurtenances locations shall be found on each transformer per
Attachments C and D.
B. Transformers shall have bolted covers for all size transformers.
C. The compartment depth shall be minimum in accordance with figure 7
of C57.12.26. A deeper compartment shall be provided for extended
secondary bushings. The tank shall be of sufficient strength to
withstand a pressure of 7 psig without permanent distortion. The
following pressure relief devices are approved:
1. Qualitrol Model No. 202-030-001
2. Qualitrol Model No. 202-032-001.
5.7 Terminations
Transformer bushings shall accommodate cable terminations in
accordance with ANSI/IEEE 386, but shall be modified to provide the
height requirements of these specifications as shown in Attachments C
and D.
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CITY OF VERNON LIGHT AND POWER
PADMOUNT TRANSFORMER
TECHNICAL REQUIREMENTS
5.8 Nameplates
A stainless steel nameplate shall be attached with non -corrosive hardware
to the inside of the low voltage compartment door. The nameplate shall
not be installed on the rear of the low voltage compartment area.
Diagrams and numbers shall be of the size and quality such that they can
be read from outside the compartment. In addition to the nameplate
requirements shown in ANSI/IEE C57.12.00-1987, Section 5.12, the total
weight, including oil, shall be indicated.
5.9 Coating
A. Each transformer and terminal enclosure combination shall be painted a
forest green color such as Dulux Bell Telephone Green No. 183-Y-546
(Munsell 7.5GY2.95/2.1) or City of Vernon -approved equivalent. The
primary and finishing coats shall have a combined minimum dry -film
thickness of three mils. Manufacturer shall furnish 1/4 pint of touch up
paint for each transformer.
B. The underside of each transformer shall be coated with an asphaltic
material or with City of Vernon -approved paint system. An epoxy coat
which meets ANSI C57.12.28 is acceptable.
6.0 Loadbreak Switches
6.1 Type
A. Each transformer shall have a three-phase, self-contained, oil immersed,
high voltage, loadbreak gang -operated sectionalizing switch. The
switches shall be inside the transformer tank and be so located that
current interruption occurs under oil. The loadbreak switches shall provide
circuit connections as shown in Attachments C and D. Operation of the
switch shall be clockwise to close.
B. The operating handle shall be located in the high voltage compartment
and be suitable for hot stick operation. The position of the switch, whether
open or closed, shall be clearly indicated. The handle shall be located in
such a manner as to be identifiable with the associated circuit -transformer.
Stencils or decals to indicate switch positions are not acceptable.
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CITY OF VERNON LIGHT AND POWER ,
PADMOUNT TRANSFORMER
TECHNICAL REQUIREMENTS
6.2 Interlocks
The switch shall have an interlock which will prevent removal of fuses
when the switch is in the closed position and also prevent the inserting of
fuses when the switch is in the closed position.
6.3 Ratings
The switches shall have the following ratings when completely assembled
and installed in the transformers.
A. Minimum Voltage Rating: 17,000 volts.
B. Loadbreak Capability: 200 rms amperes at 17,000 volts and 0.6
power factor.
C. Short -time current Rating: 10,000 rms symmetrical amperes for 15
cycles.
D. Closing and Holding Current Rating: 10,000 rms symmetrical
amperes for 15 cycles.
E. There shall be no arcing time after the switch blades have traveled
from the closed position to the fully opened position.
7.0 OVERCURRENT PROTECTION
7.1 High Voltage Protection
A. Transformers shall be protected against overcurrent by means of a
City of Vernon -approved externally replaceable fuses in the primary
circuit. The fuses shall be suitable for hot stick operation and shall
have a minimum of 50,000 rms symmetrical ampere interrupting
rating. The fuses shall have City of Vernon -approved safety
devices which prevent insertion directly into a fault.
B. The fuses shall be a Bay-O-Net type oil immersed fuses in series
with oil immersed current limiter type RTE ELSP current limiting
backup fuse. The fuses shall have a safety device which prevent
insertion directly into a fault.
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• CITY OF VERNON LIGHT AND POWER
PADMOUNT TRANSFORMER
TECHNICAL REQUIREMENTS
C. The correct size of Bay-O-Net fuse for replacement shall be
indicated by stencil or decal above the Bay-O-Net fuse as follows:
"Caution: Use only RTE Bay-O-Net Type 353C "(10, 12, etc.)"
" Amps" (25, 40, etc.)
D. The following table lists the appropriate fuse sizes:
Transformer
Ratings
KV KVA
� Ratin g
FLA
High Voltage Fuses4
BAYONET ELSP
MINIMUM
16.34
300
15.5
11
4000353C10
354508OM51M
4.00
500
15.5
18
4000353C10
354508OM51M
4.00
750
15.5
26
4000353C12
3545125M61 M
5.75
1000
15.5
35
4000353C12
3545125M61M
5.75
1500
15.5
53
4000353C16
354515OM51M5
5.75
2000
15.5
70
4000353C16
354515OM51M5
5.75
2500
15.5
88
NONE
NONE
5.75
3750
15.5
132
NONE
NONE
6.00
7.2
300
8.3
24
4000353C12
3543125M61 M
4.00
500
8.3
40
4000353C14
354308OM51 M5
4.00
750
8.3
60
4000353C16
354320OM51 M
5.75
1000
8.3
80
4000353C17
3545175M51 M5
5.75
1500
8.3
120
NONE
NONE
5.75
E. A minimum of 6 spare Bay-O-Net fuses shall be provided with each
transformer order. For instance, if we order one 7.2 kV type 300
KVA transformer we require 6 spare fuses. If we order two such
transformers, we require 12 spare fuses.
7.2 Low Voltage Protection
Low voltage overcurrent protection is not required.
4 Cooper (Type Bay-O-Net and Current Limiting ELSP)
5 Two parallel fuses per phase
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CITY OF VERNON LIGHT AND POWER
PADMOUNT TRANSFORMER
TECHNICAL REQUIREMENTS
8.0 BUSHINGS, BUSHING WELLS AND PARKING STANDS
8.1 Low Voltage Bushings
A. Transformers shall have bushings which conform to ANSI Standard
C57.12.26. On "Wye" connected transformers, the neutral shall be
connected to a fully insulated bushing. An additional tank ground
pad with removable neutral bushing ground strap shall be provided
and suitably sized for the short circuit current rating of the
transformer.
B. External spade terminals shall have a heavy tin coating process. If
the terminal extension is not an integral part of the bushing, it shall
be securely pinned to the stud.
C. External spade terminals with six holes and more shall be furnished
with additional support straps, designed by the manufacturers, at
the end farthest from the tank wall without interfering with the use of
any of the holes. Each extension pad shall be fully rated for the
maximum ampacity of the transformer. Refer to the table below for
the number of terminal holes.
KVA Ratings
Low -Voltage Ratings
(Volts)
Number of 9/16"
hole cable
positions
75-300
ALL
4-6
500
ALL
8
750-1500
ALL
12
2000-2500
ALL
14
3750
ALL
16
8.2 High Voltage Bushing Wells
Transformers shall be provided with three City of Vernon -approved, 17 kV
high voltage bushing wells rated 95 kV BIL, marked and located as shown
in Attachments C and D.
8.3 Parking Stands
Transformers shall be equipped with non -load break parking stands,
ESNA No. 151-PS or City of Vernon -approved equivalent. They shall be
located as shown in Attachments C and D and in accordance with ANSI
Standard C57.12.26.
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CITY OF VERNON LIGHT AND POWER
PADMOUNT TRANSFORMER
TECHNICAL REQUIREMENTS
9.0 IDENTIFICATION
9.1 Stencils & MSDS
A. All bushings shall be identified by yellow paint stencils, a minimum of
one inch high, on the tank wall adjacent to the bushings. See
Attachments, C and D.
B. A removable identification tag or sticker which shall be legible at time
of receipt shall be attached to the exterior of the terminal
compartment. The tag or sticker shall indicate the name of the
manufacturer, serial number, kVA and voltage ratings.
C. In addition to the nameplate information called for in ANSI C57.12.00,
the nameplate shall identify each winding as to whether it is made of
copper or aluminum.
D. The vendor shall be required to provide all applicable Material Safety
Data Sheets with all transformer orders.
10.0 ADDITIONAL REQUIREMENTS
10.1 Barriers
A barrier shall separate the high -voltage section from the low voltage
section in the terminal compartment. Barrier shall be of sufficient strength
to prevent deformation which may reduce the required clearances to
various components.
10.2 Conduit Entrance
When specifically requested in the transformer table below, a 2 %2 inch
conduit entrance hole, with a cover which is removable only from the
inside, shall be provided in the center of the low voltage sill.
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CITY OF VERNON LIGHT AND POWER
PADMOUNT TRANSFORMER
TECHNICAL REQUIREMENTS
10.3 Terminal Arrangements
Terminal arrangements shall be as shown in Attachments C and D.
10.4 Access to Terminal and Switching Compartments
A. Transformers shall be provided with hinged doors for access to the
terminal and switching compartments. Access to the high voltage
portion of the terminal and switching compartment shall be possible
only after access has been gained to the low voltage.
B. The low voltage compartment door shall be further secured by
means of a captive and recessed 'h inch pentahead bolt. A blind
bolt hole shall be provided. Bolts shall be corrosion resistant and
the design shall minimize the possibility of a misalignment and
cross -threading. Design of the bolting, padlocking and three-point
latching provisions shall be coordinated such that, only after the
padlock and bolt have been removed, shall it be possible to open
the low voltage compartment door.
11.0 TESTS
11.1 General
A. Transformer tests shall be performed as specified in ANSI Standard
C57.12.00. These test reports shall be provided to the City prior to
shipping. The City will not receive any transformers without the
required test reports.
B. Units shall comply with routine test requirements of ANSI and
certified test reports shall be furnished. The vendor shall provide
with returned bids all applicable documentation of compliance with
ANSI design tests.
C. The following data shall be submitted with each transformer order:
a. Guaranteed maximum no load (excitation) loss at rated
voltage and 110% voltage in Watts.
b. Guaranteed maximum load loss in Watts at rated voltage
and 110% voltage.
c. Guaranteed maximum total loss in Watts at rated voltage
and 110% voltage.
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CITY OF VERNON LIGHT AND POWER
PADMOUNT TRANSFORMER
TECHNICAL REQUIREMENTS
10.3 Terminal Arrangements
Terminal arrangements shall be as shown in Attachments C and D.
10.4 Access to Terminal and Switching Compartments
A. Transformers shall be provided with hinged doors for access to the
terminal and switching compartments. Access to the high voltage
portion of the terminal and switching compartment shall be possible
only after access has been gained to the low voltage.
B. The low voltage compartment door shall be further secured by
means of a captive and recessed Y2 inch pentahead bolt. A blind
bolt hole shall be provided. Bolts shall be corrosion resistant and
the design shall minimize the possibility of a misalignment and
cross -threading. Design of the bolting, padlocking and three-point
latching provisions shall be coordinated such that, only after the
padlock and bolt have been removed, shall it be possible to open
the low voltage compartment door.
11.0 TESTS
11.1 General
A. Transformer tests shall be performed as specified in ANSI Standard
C57.12.00. These test reports shall be provided to the City prior to
shipping. The City will not receive any transformers without the
required test reports.
B. Units shall comply with routine test requirements of ANSI and
certified test reports shall be furnished. The vendor shall provide
with returned bids all applicable documentation of compliance with
ANSI design tests.
C. The following data shall be submitted with each transformer order:
a. Guaranteed maximum no load (excitation) loss at rated
voltage and 110% voltage in Watts. -
b. Guaranteed maximum load loss in Watts at rated voltage
and 110% voltage.
c. Guaranteed maximum total loss in Watts at rated voltage
and 110% voltage.
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CITY OF VERNON LIGHT AND POWER
PADMOUNT TRANSFORMER
TECHNICAL REQUIREMENTS
10.3 Terminal Arrangements
Terminal arrangements shall be as shown in Attachments C and D.
10.4 Access to Terminal and Switching Compartments
A. Transformers shall be provided with hinged doors for access to the
terminal and switching compartments. Access to the high voltage
portion of the terminal and switching compartment shall be possible
only after access has been gained to the low voltage.
B. The low voltage compartment door shall be further secured by
means of a captive and recessed Y2 inch pentahead bolt. A blind
bolt hole shall be provided. Bolts shall be corrosion resistant and
the design shall minimize the possibility of a misalignment and
cross -threading. Design of the bolting, padlocking and three-point
latching provisions shall be coordinated such that, only after the
padlock and bolt have been removed, shall it be possible to open
the low voltage compartment door.
11.0 TESTS
11.1 General
A. Transformer tests shall be performed as specified in ANSI Standard
C57.12.00. These test reports shall be provided to the City prior to
shipping. The City will not receive any transformers without the
required test reports.
B. Units shall comply with routine test requirements of ANSI and
certified test reports shall be furnished. The vendor shall provide
with returned bids all applicable documentation of compliance with
ANSI design tests.
C. The following data shall be submitted with each transformer order:
a. Guaranteed maximum no load (excitation) loss at rated
voltage and 110% voltage in Watts.
b. Guaranteed maximum load loss in Watts at rated voltage
and 110% voltage.
c. Guaranteed maximum total loss in Watts at rated voltage
and 110% voltage.
14 of 16
CITY OF VERNON LIGHT AND POWER
PADMOUNT TRANSFORMER
TECHNICAL REQUIREMENTS
d. Exciting Current in percent at rated voltage and 110%
rated voltage.
e. Percent impedance on base voltage and at the maximum
temperature rise. If the transformer is a 55/65 degree
Celsius transformer rise, the percent impedance shall be at
65 degree Celsius.
f. Efficiencies shall be provided at loading levels of 100%,
75%, 50%, and 25%.
g. Regulation at rated load @ 80% and 100% Power Factor.
h. Two sets of outline drawings showing dimensions, weight,
gallons of oil, gauge of steel in tank walls, cover, bottom,
and cooling radiators and description of accessories. After
order is awarded, the vendor shall submit FINAL drawings.
12.0 OPERATING PERFORMANCE
12.1 General
The Apparatus shall perform in accordance with the conditions set forth in
this Specification.
13.0 BID EVALUATION
13.1 In comparing proposals or bids, consideration will not be confined to price only.
The successful bidder will be one whose product is judged to best serve the
interests of the City of Vernon when price, product, safety, quality and delivery
are considered. The City of Vernon reserves the right to reject any or all
proposals or bids or any part thereof, and to waive any minor technicalities from
the specifications. A contract will be awarded to the bidder submitting the
lowest responsible bid meeting the requirements of this specification.
13.2 Total Ownership Cost
Purchase of transformers shall be evaluated by lowest total ownership cost.
The formula to evaluate Total Owning Cost (TOC):
TOC = C + $4.53/W (PNL in Watts) + $1.1/W (PLL in Watts)
Where TOC is the total ownership cost in dollars, C is the initial cost in
dollars, PNL is the guaranteed maximum no-load loss in watts, and PLL is
the guaranteed maximum load loss in watts
15 of 16
CITY OF VERNON LIGHT AND POWER
PADMOUNT TRANSFORMER
TECHNICAL REQUIREMENTS
For the determination of the award for the transformer order(s), City will
consider all bids within 5% of the lowest Present Value Cost of
Transformer to be economically equivalent. The City of Vernon realizes it
is impossible to accurately predict economic conditions over the
evaluation period of 30 years.
13.2 Delivery
A delivery date of 16 weeks ARO or less is required. Failure to quote a
delivery schedule within this period may disqualify the bid.
14.0 DOCUMENTATION
14.1 For Bid Evaluation
Bidders shall furnish the following in their bid proposals:
1. Transformer unit price, F.O. B. Soto Yard.
2. Guaranteed maximum no-load loss at rated voltage in watts.
3. Guaranteed maximum load loss in watts at rated voltage and kVA.
4. Percent impedance on rated voltage tap.
5. Two sets of dimension and outline drawings.
14.2 For Delivery
Supplier shall furnish MSDS and certified test reports and drawings, as
listed in Section 11.1 in this Specification one month before transformers
are shipped.
These documents shall be submitted to:
City of Vernon
Utilities Department
4305 Santa Fe Avenue
Vernon Ca, 90058
Phone: (323) 583-8811
Attention: Ramon Z. Abueg
Assistant Director of Engineering and Operations
16 of 16
CITY OF VERNON LIGHT AND POWER
PADMOUNT TRANSFORMER
TECHNICAL REQUIREMENTS
Attachment A. Transformer Sizes
k `Sf
x
500
7.2
3
277/480
2
750
7.2
277/480
1
150
16.34
120/208
3
300
16.34
277/480
1
500
16.34
277/480
3
750
16.34
277/480
3
1000
16.34
277/480
2
2500
16.34
277/480
1
3750
16.34
277/480
LINE A
ONE CIRCUIT
(RADIAL)
TWO CIRCUIT
(LOOPED)
CL
AY-O-NET
LINE A �- LINE B
CL
BAY-O-NET
VERNON LIGHT AND POWER
EQUIPMENT: SPECIFICATION TR2
ADDITIONAL
CIRCUIT CONNECTIONS
11/2/01
i
AV
NO
REVISION
DATE
APPV'D
BY
ATTACHMENT 6
70" MAX RADIATORS - MAY
EXTEND BEYOND THE
DIMENSIONS SHOWN
x
z Q
O
co
PLAN
/— SEE NOTE 2 —C
EXTERNALLY
REPLACEABLE CL FUSES
L----__ J NAMEPLATE
O UO UO
Hi H2 H3 TRANS SW.
a 0 0
V x x
0 1 3
N
N O O
0 2
0
_z
Y
W
H1 H2 H3
Q 2-1/2" CONDUIT
a
HOLE (SEE NOTE 3)
( 40-1/2" MIN 22" MIN.
ELEVATION
NOTES:
BAY—O—NET FUSE
SCHEMATIC DIAGRAM
1. ALL DIMENSIONS AND CLEARANCES SHALL CONFORM WITH ANSI C57.12.26.
2. CURRENT LIMITING FUSES INTERLOCKED WITH TRANSFORMER SWITCH.
x X x x
0 1 2 3
3. 2-1/2" CONDUIT HOLE SHALL BE LOCATED IN THE CENTER (BOTH HORIZONTALLY AND VERTICALLY)
OF THE LOW VOLTAGE CABINET SILL.
VERNON UTILITIES DEPARTMENT
EOUIPMEHT: SPECIFICATION TR2
ONE -CIRCUIT PADMOUNTED
TRANSFORMERS
75 THR0UGH 500 KVA
0
10/30/01
AV
NO
REVISION
DATE
�V'D
APP
BY
ATTACHMENT C
70" MAX RADIATORS . MAY
EXTEND BEYOND THE
DIMENSIONS SHOWN
x
z00
a
cD
PLAN
�- SEE NOTE 2
EXTERNALLY
REPLACEABLE CL FUSES
10 O 01 �_--
L------ J NAMEPLATE
o uo uo
H1 H2 H3 TRANS SW.
Q
o 0
p 1 3
N
N O O
0 2
0
z_
Y
O
H1 H2 H3
a 2-1/2" CONDUIT
a
HOLE (SEE NOTE 3)
�-- 40-1 /2" MIN 22" MIN.
ELEVATION
NOTES:
BAY-O-NET FUSE
SCHEMATIC DIAGRAM
1. ALL DIMENSIONS AND CLEARANCES SHALL CONFORM WITH ANSI C57.12.26.
2. CURRENT LIMITING FUSES INTERLOCKED WITH TRANSFORMER SWITCH.
X X X X
O 1 2 3
3. 2-1/2" CONDUIT HOLE SHALL BE LOCATED IN THE CENTER (BOTH HORIZONTALLY AND VERTICALLY)
OF THE LOW VOLTAGE CABINET SILL.
VERNON UTILITIES DEPARTMENT
EQUIPMENT: SPECIFICATION TR2
ONE -CIRCUIT PADMOUNTED
TRANSFORMERS
75 THROUGH 500 KVA
0
10/30/01
P-�
AV
NO
REVISION
DATE
APPV'D
BY
ATTACHMENT C
70" MAX RADIATORS MAY
EXTEND BEYOND THE
DIMENSIONS SHOWN
x
z Q
o
(D
PLAN
�- SEE NOTE 2
EXTERNALLY
REPLACEABLE CL FUSES
L--�--- J
NAMEPLATE
O UO UO
H1 H2 H3
TRANS SW.
x
O O
U)
x x
0
1 3
P
F<_
x x
W
0 2
0
z_
Y
O`
Ht H2 H3
Q 2-1/2" CONDUIT
a
HOLE (SEE NOTE 3)
�40-1 /2" MIN. —I. -�I-- 22" MIN.
ELEVATION
BAY-O-NET FUSE
SCHEMATIC DIAGRAM
NOTES:
1. ALL DIMENSIONS AND CLEARANCES SHALL CONFORM WITH ANSI C57.12.26.
2. CURRENT LIMITING FUSES INTERLOCKED WITH TRANSFORMER SWITCH.
x , x x x
0 1 2 3
3. 2-1/2" CONDUIT HOLE SHALL BE LOCATED IN THE CENTER (BOTH HORIZONTALLY AND VERTICALLY)
OF THE LOW VOLTAGE CABINET SILL.
VERNON UTILITIES DEPARTMENT
EOUIPMENT: SPECIFICATION TR2
ONE -CIRCUIT PADMOUNTED
TRANSFORMERS
75 THROUGH 500 KVA
0
10/30/01
l
=
AV
NO
REVISION
DATE I
APPV'D
�
BY
ATTACHMENT C
UNL-Ulrt %,Ul I LAUMUUN I LU I KANJFUHMtKS
750 THROUGH _3750 =KVA
F-- 28" MIN -r- i— 22" MIN
PLAN
EXTERNALLY
REPLACEABLE CL FUSES
r--- - - - - - - r ---,
1 0 O O
I 1
L J NAMEPLATE
JO UO UO
H1 H2 H3 TRANS SW.
0
x ox`
1 3
O O
x x
0 2
RADIATORS MAY
EXTEND BEYOND THE
DIMENSIONS SHOWN
DIM
750, 1000 &
1500 KVA
2000 AND
3750 KVA
A
77" MAX
87" MAX
B
80" MAX
85" MAX
C
76" MAX
90" MAX
D
26" MIN
26" MIN
E
42" MIN
42" MIN
SECONDARY BUSHING LOCATIONS TO CONFORM
WITH ANSI STANDARD C57.12.22 - FIG. 3
I I 2-1/2" CONDUIT
HOLE (SEE NOTE 3) -ik02-1/2"
ELEVATION
6" CONDUIT HOLE
ELEVATION
NOTES
1. ALL DIMENSIONS AND CLEARANCES SHALL CONFORM WITH ANSI C57.12.26.
2. CURRENT LIMITING FUSES INTERLOCKED WITH TRANSFORMER SWITCH.
3. 2-1/2" CONDUIT HOLE SHALL BE LOCATED IN THE CENTER (BOTH HORIZONTALLY AND VERTICALLY)
OF THE LOW VOLTAGE CABINET SILL.
VERNON LIGHT AND POWER
EQUIPMENT: SPECIFICATION TR2
ONE -CIRCUIT .PADMOUNTED
TRANSFORMERS
750 THROUGH 3750 KVA
1
9/11/03
JL
10
REVISION
DATE
APPV'D
BY
ATTACHMENT D
urvU-LiKi ui i rHUMUUN 1 tU I KAW:&QKMtKS
750 THROUGH _3750 .KVA
6 .
28" MIN Ir— 22" MIN
PLAN
EXTERNALLY
REPLACEABLE CL FUSES
1 0 O O
I
uo NAMEPLATE
uo uo
HI H2 H3 TRANS SW.
0 0.
x x
1 3
O O
x x
0 2
RADIATORS MAY
EXTEND BEYOND THE
DIMENSIONS SHOWN
DIM
750, 1000 &
1500 KVA
2000 AND
3750 KVA
A
77" MAX
87" MAX
B
80" MAX
85" MAX
C
76" MAX
90" MAX
D
26" MIN
26" MIN
E
42" MIN
42" MIN
SECONDARY BUSHING LOCATIONS TO CONFORM
WITH ANSI STANDARD C57.12.22 - FIG. 3
I I 2-1/2" CONDUIT
HOLE (SEE NOTE 3) --� 6"
ELEVATION
6" 1 02-1 /2" CONDUIT HOLE
ELEVATION
NOTES:
1. ALL DIMENSIONS AND CLEARANCES SHALL CONFORM WITH ANSI C57.12.26.
2. CURRENT LIMITING FUSES INTERLOCKED WITH TRANSFORMER SWITCH.
3. 2-1/2" CONDUIT HOLE SHALL BE LOCATED IN THE CENTER (BOTH HORIZONTALLY AND VERTICALLY)
OF THE LOW VOLTAGE CABINET SILL.
VERNON LIGHT AND POWER
EQUIPMENT: SPECIFICATION TR2
ONE -CIRCUIT PADMOUNTED
TRANSFORMERS
THROUGH 3750 KVA
1
9/11/03
JL 1750
10
REVISION
DATE
APPV'D
ALBY
ATTACHMENT D