HomeMy WebLinkAboutCORRESPONDENCE - PURCHASE ORDER - 9164211THE CITY OF FORT COLLINS
Light and Power Department
P.O. Box 580
Fort Collins, CO 80522
SPECIFICATION NO: 368-310
TITLE: THREE-PHASE SUBMERSIBLE DISTRIBUTION TRANSFORMERS
WITH SEPARABLE
INSULATED LOAD BREAK HIGH-VOLTAGE CONNECTORS
UPDATED BY:
Adam Bromley
Senior Electrical Engineer
APPROVED BY:______________________________________
Kraig Bader
Standards Engineering Division Manager
ORIGINATION DATE: June 20, 2016
REVISED:
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ITEMS COVERED BY THIS SPECIFICATION
DESCRIPTION
STOCK NO.
SPECIFICATION NO. SERIAL
150 KVA, 208Y/120 RADIAL 368-310 -015
150 KVA, 480Y/277 RADIAL 368-310 -016
300 KVA, 208Y/120 RADIAL 368-310 -030
300 KVA, 480Y/277 RADIAL 368-310 -031
500 KVA, 208Y/120 RADIAL 368-310 -050
500 KVA, 480Y/277 RADIAL 368-310 -051
750 KVA, 208Y/120 RADIAL 368-310 -075
750 KVA, 480Y/277 RADIAL 368-310 -076
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REVISION DESCRIPTIONS
REVISION DESCRIPTION (Previous on file) APPROVED
REVISION A:
New Specification
Notes on Impedance values. Preliminary results in arc flash calculations suggest that
higher impedances cause more incident energy to be let through during an arc flash.
IEEE C57.12.24 suggests a wide range of acceptable impedances, however until we
can research further into how much the impedance affects arc flash incident energy and
voltage drop on customer services at different points on our system, we are sticking with
the impedance range specified in our 3-phase padmounted specification. The one
exception is a slightly higher minimum impedance for the 150 kVA due to coordination
issues with the recommended Magnex Interrupter.
In order to better understand how the three phase transformers installed on Fort Collins
system will operate under certain conditions, we will require that the core-coil assembly
type be documented in the approval drawings. See section 5.2.5.2.
Paint color will be left out of the specification at this time until more research can be
done regarding the thermal benefits of dark versus light paint colors in the absence of
solar insolation. Heat run tests performed on dark vs. light could be performed in order
to provide us with more information.
Three-phase transformer vault specifications are currently being designed and will be
included in an appendix in the next specification revision. The maximum transformer tank
dimensions shown in this specification are intended to provide guidance to transformer
manufacturers on the size of the expected precast concrete vaults used for these
transformers.
Not all manufacturers of automatic PRVs and oil sight glass specified in our single phase
submersible specification adequately identify grade of stainless steel, silicon bronze, or
brass. Our desire is that these parts be constructed with 304L or 316L stainless; however,
it appears that the only PRVs on the market are made with either 302 or 303. The
manufacturers and part numbers that are currently available to us are listed. There is a
sight glass manufactured with 316L stainless and that manufacturer and part number is
also specified.
Adam Bromley
Kraig Bader
6/20/2016
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TABLE OF CONTENTS
ITEMS COVERED BY THIS SPECIFICATION ................................................................................................................................ 2
REVISION DESCRIPTIONS .................................................................................................................................................................
3
1. SCOPE ..................................................................................................................................................................................................
5
2. APPLICABLE DOCUMENTS ........................................................................................................................................................... 5
3. KILOVOLT-AMPERE TEMPERATURE RATINGS .................................................................................................................... 5
4. ENERGY EFFICIENCY .....................................................................................................................................................................
5
5. GENERAL CONSTRUCTION .......................................................................................................................................................... 6
5.1 FUNCTIONAL DESCRIPTION ...................................................................................................................................................... 6
5.2 DESIGN AND CONSTRUCTION .................................................................................................................................................. 6
6. LOSSES ..............................................................................................................................................................................................
10
7. QUALITY ASSURANCE .................................................................................................................................................................
11
7.1 GENERAL .....................................................................................................................................................................................
11
7.2 TEST CONDITIONS .....................................................................................................................................................................
11
7.3 FUNCTIONAL TESTS ..................................................................................................................................................................
12
8. PREPARATION FOR DELIVERY ................................................................................................................................................. 12
9. DEFINITIONS AND ABBREVIATIONS ....................................................................................................................................... 13
APPENDIX A – APPROVED MANUFACTURERS ......................................................................................................................... 14
APPENDIX B – TRANSFORMER LOSS EVALUATION ............................................................................................................... 15
SPECIAL CONDITIONS AND SUPPLEMENTAL INSTRUCTIONS TO BIDDERS APPLICABLE TO SPECIFICATION
368-310 ....................................................................................................................................................................................................
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SPECIFICATION FOR
THREE-PHASE SUBMERSIBLE 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, submersible distribution transformers rated 750 kVA and smaller, high voltage
13,200 GrdY/7620 volts, with separable insulated load break high voltage connectors. These transformers are used
for step down purposes from a radially-fed underground primary cable supply and are typically installed in an enclosure
below ground level, operated from above and suitable for continuous submerged operation.
This standard generally conforms to Institute of Electrical and Electronics Engineers (IEEE) requirements for
submersible, three-phase transformers, 3750 kVA and Smaller: High Voltage, 34500 GrdY/19920 Volts and below;
Low Voltage, 600 Volts and below, C57.12.24.
2. APPLICABLE DOCUMENTS
Transformers purchased under these Specifications shall be new and, unless otherwise specified, meet the
requirements of the applicable Standards identified herein, and the modifications and additions given in the subsequent
paragraphs. In case of conflict, the requirements of the following documents shall apply in the priority shown:
a) This Specification
b) IEEE C57.12.24
c) Other applicable ANSI, IEEE, and NEMA Standards
The following documents form a part of this Specification to the extent specified herein. The latest issue in effect on
the date of invitation for bids shall form a part of this Specification, unless otherwise noted.
IEEE C57.12.00 - Standard for General Requirements for Liquid-Immersed Distribution, Power, and
Regulating Transformers
IEEE C57.12.24 – Standard for submersible, three-phase transformers, 3750 kVA and Smaller: High Voltage,
34500 GrdY/19920 Volts and below; Low Voltage, 600 Volts and below
IEEE C57.12.32 – Standard for Submersible Equipment – Enclosure Integrity
IEEE C57.12.37 – Electronic Reporting of Test Data
IEEE C57.12.70 - Terminal markings and connections for distribution and power transformers
IEEEC57.12.80 - Terminology for power and distribution transformers
IEEE C57.12.90 - Distribution, power, and regulating transformers, and shunt reactors, test code for
IEEE 386 - Separable insulated connectors for power distribution systems above 600V
3. KILOVOLT-AMPERE TEMPERATURE RATINGS
Kilovolt-ampere ratings are continuous and are based on not exceeding either a 55°C average winding temperature or
a 70°C hot spot temperature rise. The temperature rise of the insulating oil shall not exceed 55°C when measured
near the top of the tank. The temperature rise is based on an altitude of 3,300 feet.
The kilovolt-ampere ratings for transformers conforming to this standard shall be suitable for continuous operation at
the rated kilovolt-amperes, provided that the temperature of the cooling air (enclosure ambient temperature) does not
exceed 50 °C and the average temperature of the cooling air does not exceed 40 °C for any 24-hour period. KVA
ratings shall be in accordance with Table 1.
4. ENERGY EFFICIENCY
Transformers shall be designed to meet the minimum energy efficiency ratings defined in the United States
Department of Energy April 18, 2013 Final Rule: 10 CFR Part 431, Energy Conservation Program: Energy
Conservation Standards for Distribution Transformers (i.e. DOE 2016 energy efficiency standards).
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5. GENERAL CONSTRUCTION
5.1 FUNCTIONAL DESCRIPTION
The transformer shall be a three-phase, submersible type, radial feed, “deadfront” type for use on a 13.2 kV grounded
“Y” distribution system.
5.2 DESIGN AND CONSTRUCTION
5.2.1 Transformers shall conform to IEEE Standard for Submersible Equipment – Enclosure Integrity, C57.12.32.
5.2.2 The high and low-voltage bushings shall be located on the top of the transformer tank as shown in Figure 1.
5.2.3 Service conditions shall be as defined in paragraph 4.1 of IEEE C57.12.00 except the maximum altitude at which
transformers will be installed is in excess of the stated 1000 m (3300 ft) and will be assumed to be approximately
1524 m (5000 ft).
5.2.4 RATINGS
Table 1 - Transformer Ratings
Stock No.
368-310-
Serial
kVA
High Voltage Low
Voltage
Rating
Impedance Tolerance1
Rating Taps
Above Below Minimum Maximum
015 150 13200GRDY/7620 2 – 2 ½ 2 – 2 ½ 208Y/120 1.92% 2.31%
016 150 13200GRDY/7620 2 – 2 ½ 2 – 2 ½ 480Y/277 1.92% 2.31%
030 300 13200GRDY/7620 2 – 2 ½ 2 – 2 ½ 208Y/120 2.25% 2.75%
031 300 13200GRDY/7620 2 – 2 ½ 2 – 2 ½ 480Y/277 2.25% 2.75%
050 500 13200GRDY/7620 2 – 2 ½ 2 – 2 ½ 208Y/120 2.81% 3.27%
051 500 13200GRDY/7620 2 – 2 ½ 2 – 2 ½ 480Y/277 2.81% 3.27%
075 750 13200GRDY/7620 2 – 2 ½ 2 – 2 ½ 208Y/120 5.32% 6.18%
076 750 13200GRDY/7620 2 – 2 ½ 2 – 2 ½ 480Y/277 5.32% 6.18%
1
Tolerances for impedance voltage shall be consistent with requirements in section 9.2 of IEEE C57.12.00-2010.
5.2.4.1 INSULATION LEVEL
5.2.4.1.1 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.
5.2.4.1.2 Dielectric test levels shall be in accordance with the distribution levels in Section 5.10 of IEEE
C57.12.00-2010.
5.2.4.1.3 The unit shall withstand test voltages in accordance with IEEE C57.12.00 and impulse tests in
accordance with IEEE C57.12.90-2010 section 10.4.
5.2.4.2 TRANSFORMER CORE
5.2.4.2.1 A five-legged core-coil assembly or three separate core-coil assemblies shall be employed. The use
of three-legged designs is expressly prohibited. The type of core-coil assembly used in each
transformer design shall be documented in the approval drawings submitted to Fort Collins Utilities
Engineering Standards Division.
5.2.4.2.2 The transformer core material shall be constructed with a silicon steel material. All core materials
that do not meet that requirement shall be specifically approved in writing by Fort Collins Utilities
Engineering Standards Division.
5.2.4.3 HIGH VOLTAGE TAPS
A no-load tap changer with external operating handle shall provide two 2 ½ full capacity taps above and
below normal. The operating handle shall be mounted on the top of the tank in the preferred area for
primary switch handles shown in Figure 2 of IEEE C57.12.24-2009.
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5.2.4.4 BUSHING WELLS AND TERMINALS
5.2.4.4.1 The number, location, and arrangement of bushing wells, terminals and parking stands shall be as
shown in Figure 1 of this specification. All low-voltage bushings and high-voltage wells shall be
welded to the cover.
5.2.4.4.2 High-voltage bushing wells shall be compatible with 200A load-break interface 8.3/14.4 kV bushings
well inserts in accordance with IEEE Std. 386. It is preferred that the bushing well insert not be
supplied with the transformer. Each bushing well shall be covered by a removable cap that keeps
dirt and debris out of the bushing well during shipping and storage.
5.2.4.4.3 Low voltage terminals shall consist of plated copper spades that meet the various size requirements
shown in Figure 4 of IEEE C57.12.24-2009 for the different transformer sizes and secondary
voltages.
5.2.4.4.4 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. This ground strap shall be installed at
the factory and situated such that it maintains the minimum clearance between secondary bushings
shown in Figure 1.
5.2.4.4.5 The high-voltage neutral shall be connected to the low-voltage neutral internally with provision for
opening this connection for testing.
kVA ratings High Voltage Bushing Wells and
Parking Stands
Low Voltage Bushings
J (inches) K (inches) L (inches)
All kVA 4.5 9 6
Figure 1 – Location of and Minimum Clearances for Bushings
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Figure 2 – Cable Accessory Parking Stand Detail
5.2.4.5 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.
5.2.4.6 TANKS
5.2.4.6.1 The tank shall be domed or sloped to shed water and shall be of sufficient strength to support a
minimum of 500 lbs.
5.2.4.6.2 Construction of the tank shall be in accordance with IEEE C57.12.24-2009, except that the tank,
cover, base, tank supports, lifting lugs, parking stands and all external hardware and fittings shall be
constructed of 304L stainless steel.
5.2.4.6.3 The cover used to seal the hand-hole used in the manufacturing process shall be welded to the tank
cover. Bolted covers with gaskets are expressly prohibited.
5.2.4.6.4 To allow for appropriate bonding methods for additional corrosion control, a ground ring bus shall be
constructed of a single piece of #2 AWG bare soft drawn copper. This bus shall be supported by at
least six ground lugs (four 7” from top and two 7” from base of tank respectively) around the
circumference of the tank. The lugs shall utilize ½” – 13 SST ground pads.
5.2.4.6.5 Maximum tank dimensions including lifting lugs, radiators, and accessory equipment for each kVA
transformer size is provided in Figure 3.
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Maximum Clearance Dimensions (inches)
kVA A B C
150 60 62 34
300 64 62 34
500 72 65 36
750 78 76 54
Figure 3 – Maximum Transformer Dimensions
5.2.4.7 OVERCURRENT PROTECTION
Overcurrent protection shall consist of a primary three phase Magnex Interrupter in series with an ELSP
current limiting backup fuse. Magnex Interrupter and fuses shall be sized as shown in Table 2.
Table 2 – Fusing Requirements
Stock Number kVA
Capacity
Magnex Interrupter Sensor
(Part Number*)
Current Limiting Fuse
Continuous Current Rating
(Part Number*)
368-310-015
368-310-016 150kVA
E10
(MX3BN2SYE10)
40A
(CBUC08040C100)
368-310-030
368-310-031 300kVA
E18
(MX3BN2SYE18)
80A
(CBUC08080C100)
368-310-050
368-310-051 500kVA
E30
(MX3BN2SYE30)
100A
(CBUC08100C100)
368-300-075
368-300-076 750kVA
E40
(MX3BN2SYE40)
100A
(CBUC08100C100)
* Fuse shall be as specified in the table above or shall be an equivalent as approved in
writing by Electric Standards Engineering.
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5.2.4.8 ACCESSORY EQUIPMENT
5.2.4.8.1 Suitable jack bosses or equivalent jacking facilities shall be provided on the tank. Vertical clearance
for a jack shall be 1½ inches minimum, 3½ inches maximum.
5.2.4.8.2 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.
5.2.4.8.3 Terminal designations are shown in Figure 1. The identification of terminal connections shall be
shown on the instruction nameplate. Instruction nameplate shall be constructed of 304L stainless
steel, located on the tank cover, and shall be permanently secured with non-corrosive hardware.
As specified in IEEE C57.12.24 the instruction nameplate shall conform to the requirements of
nameplate “C” as described in IEEE C57.12.00, paragraph 5.12. On the nameplate or a label affixed
near it, the manufacturer shall indicate that the dielectric fluid contains less than 1 ppm PCB.
5.2.4.8.4 For each primary bushing well, a parking stand meeting the requirements of Figure 2 shall be
welded on the cover and shall be placed in locations specified in Figure 1. They shall be situated in
such a way that a standoff can be placed without interference with other components or accessory
equipment.
5.2.4.8.5 A stainless steel automatic pressure relief device that can also relieve pressure with a manual pull
ring shall be provided. The valve shall be constructed of a 300 series grade of stainless steel; 304L
is preferred. The approved manufacturers and part numbers for this device are as follows:
Qualitrol 202-014-02
Heartland HPV-1400
Other devices meeting the requirements defined in this specification shall be specifically approved in
writing by Fort Collins Utilities Engineering Standards Division.
5.2.4.8.6 A stainless steel sight gauge/oil level shall be provided. The fitting welded to the cover to
accommodate this gauge shall be constructed of 304L or 316L stainless steel. The approved
manufacturer and part number for this device is Heartland HLG-1065-316. Other devices meeting
the requirements defined in this section shall be specifically approved in writing by Fort Collins
Utilities Engineering Standards Division.
5.2.4.9 AUDIBLE SOUND LEVEL
The audible sound level shall be in accordance with section 7.8 of IEEE C57.12.24-2009.
5.2.4.10 PAINT
5.2.4.10.1 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.
5.2.4.10.2 EEI “Finishing Guidelines” specification shall apply.
5.2.4.11 SAFETY LABELS
The manufacturer shall not apply NEMA 260 Safety Labels. The Purchaser will apply custom warning labels
after delivery.
6. LOSSES
The total losses of a transformer shall be the sum of the excitation losses and the load losses (I2R losses). Load loss
tests shall be performed and reported on all units regardless of whether or not a record of such tests is available on
duplicate units. Loss evaluations and loss costs will be based on the values shown in the “Special Conditions and
Supplemental Instructions to Bidders.” Transformers will be evaluated on excitation losses and I2R losses at the specified
rates. If tested losses exceed quoted losses but are within the tolerances of paragraph 9.3, IEEE C57.12.00-2010, the
additional cost incurred from the differential of losses will be calculated using the following equation and the above
specified rates and will be deducted from the original Purchase Order or back charged to the manufacturer. In the
following equation, “Units” shall mean “Transformers of the same size and design on one order.”
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Excess loss $ = [No. of units] [(No Load Loss Evaluation $) (Avg. No Load Losses – Quoted No Load Losses) + (Load
Loss Evaluation $) (Avg. Load Losses – Quoted Load Losses)]. If this equation results in a negative number no credit will
be given the Supplier.
If any unit or units exceed the tolerances of paragraph 9.3, IEEE C57.12.00-2010, that unit or units shall not be shipped
without express permission from the City. If accepted, the deduction for excess losses will be based on the following
equation:
Excess loss $ = (No Load Loss Evaluation $) (No Load Losses – Quoted No Load Losses) But Not Less Than Zero +
(Load Loss Evaluation $) (Load Losses – Quoted Losses) But Not Less Than Zero.
Quoted losses submitted by manufacturers shall include the following:
Core material type
No load losses
Full load losses – it shall be clearly stated whether this number includes the winding’s expected stray losses and
losses associated with auxiliary devices
Winding’s expected stray losses related to quoted transformer design
Losses associated with auxiliary devices such as fuses, breakers, switches, etc.
All quoted loss values shall be corrected to a reference temperature of 85˚C. Quotations submitted during the bid process
without the required losses information shall be deemed unresponsive and are subject to rejection by the City of Fort
Collins.
7. QUALITY ASSURANCE
7.1 GENERAL
7.1.1 RESPONSIBILITY FOR INSPECTION
Unless otherwise specified, the vendor is responsible for the performance of all inspection requirements as
specified herein. Except as otherwise specified, the vendor may utilize his own facilities or any commercial
laboratory acceptable to the City of Fort Collins Utilities. The City reserves the right to perform or witness any of
the inspections set forth in this Specification where such inspections are deemed necessary.
7.1.2 TEST REPORT
The manufacturer shall furnish to the purchaser, prior to payment, certified copies of the results of all tests as
well as electronic reports including transformer test data as specified in IEEE C57.12.37. Unsigned copies of
the certified test reports are not acceptable even if accompanied by a signed cover letter. The manufacturer’s
Quality Control Manager shall review and approve each test report.
The electronic reports shall include the standard data set and the extended data set as specified in sections 4.2
and 4.3, respectively, of IEEE C57.12.37-2006. If the manufacturer performs resistance testing that yields a
tested stray loss value, this value shall be reported in the “Reserved Space” field specified in section 4.3.12 of
IEEE C57.12.37-2015. These reports shall be formatted in a comma delimited file as specified in section 5.3 of
IEEE C57.12.37-2015 or in a Microsoft Excel format approved by Fort Collins Utilities Engineering Standards
Division. These reports shall be sent to the following E-mail address: standardsengineering@fcgov.com .
7.2 TEST CONDITIONS
Unless otherwise specified, testing defined in Section 4.6 shall be conducted under the following conditions:
7.2.1 REFERENCE TEMPERATURE
The reference temperature to which losses, impedance, regulation, and efficiency are corrected shall be 85° C.
7.2.2 TOLERANCE ON IMPEDANCE VOLTAGE
Tolerance shall be as specified in Table 1.
7.2.3 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.
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7.3 FUNCTIONAL TESTS
7.3.1 GENERAL
The design and production tests to be performed and associated test procedures required are specified in IEEE
C57.12.00, and C57.12.90. Exception: impedance and load-loss tests shall be made on each unit and may not be
omitted even if a record of such tests made on a duplicate unit is available.
7.3.2 LEAK TESTING
The transformer tank shall be filled with oil and tested for air and oil leaks under (1) 4 psig vacuum for ½ hour,
(2) 7 psig pressure for 24 hours in the sequence indicated. Any leak testing procedures not meeting this
requirement shall be noted as an exception in the vendor’s bid and the procedure shall be described for
approval by Fort Collins Utilities Standards Engineering Division.
7.3.3 NOISE TESTING
Noise testing shall be conducted in accordance with Table 18 of IEEE C57.12.00-2010.
8. PREPARATION FOR DELIVERY
Transformers shall be prefilled with the appropriate amount of transformer oil and shall be shipped by open-bed truck. Units
shall be packaged in such a way as to provide for ease of handling and to protect units from shipping damage. Units shall be
fully palletized in two-way pallets or four-way universal pallets with 30" minimum openings (to accommodate minimum fork
spacing) and loaded on the truck for side removal. Pallets shall be independent of the transformer. The Supplier shall give
24-hour notice prior to delivery for any shipments where an individual transformer weighs over 5,000 pounds. In addition to
these requirements, the Supplier shall comply with any additional requirements or modifications shown on the purchase order
and/or supplemental instructions.
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9. DEFINITIONS AND ABBREVIATIONS
Vendor or Supplier - The manufacturer and/or manufacturer's agent supplying or quoting on the specified article.
Article, Unit, Assembly - All refers to the equipment defined by this specification.
DC or d.c. - Direct Current.
AC or a.c. - Alternating Current.
°C - Degree Celsius (Centigrade)
°F - Degree Fahrenheit
kV - 1000 volts.
CPS or Hz - Cycles per second.
psig - Pounds per square inch gauge.
V or v - Volts.
kVA - 1000 Volt-amperes.
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APPENDIX A – Approved Manufacturers
Transformers purchased under this Specification shall be of the make shown below. Manufacturers not listed below may
submit written proposals demonstrating compliance with these Specifications for consideration of addition to the accepted
manufacturer list prior to the next request for bids. In addition to inclusion on the list below, manufacturer's equipment must
also satisfy all requirements of this Specification to be acceptable. Approved manufacturers must have constructed and
submitted prototype units for inspection and deemed satisfactory by the Fort Collins Utilities Electric Department.
APPROVED MANUFACTURERS
Carte International
Howard Industries
The manufacturers in the following list have been conditionally approved and may bid as an alternate. The definition and
intent of "Conditional Approval" of a manufacturer is to allow the City to gain some experience with the manufacturer's product.
In order to be added to the Conditionally Approved List, the manufacturer shall submit drawings demonstrating that their
design meets technical and dimensional requirements contained within this Specification. Should a conditionally approved
manufacturer be the evaluated low bidder, the City reserves the right to award all, part, or none of the order to them,
dependant upon the current needs of the City for that item or items.
CONDITIONALLY APPROVED MANUFACTURERS
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APPENDIX B – Transformer Loss Evaluation
TRANSFORMER LOSS EVALUATION - AVERAGE LOSSES
City Order No. _____________________________ S/N __________________________________
Manufacturer _____________________________ Invoice No. __________________________
KVA/Unit ________________________________
LINE
DESCRIPTION AMOUNT
(1) No. of units
________
(2) Average core losses
________
(3) Quoted core losses
________
(4) Excess average core losses:
line (2) less line (3)
________
(5) Penalty for excess average core losses:
line (1) x line (4) x $____________
________
(6) Average copper losses
________
(7) Quoted copper losses
________
(8) Excess average copper losses:
line (6) less line (7)
________
(9) Penalty for excess average copper losses:
line (1) x line (8) x $_______________
________
(10) Penalty to be assessed manufacturer:
line (5) plus line (9) but not less
than zero
________
Date ________________________________ Prepared By: _____________________________
Design Engineering
NOTE: If any unit(s) exceeds the loss tolerances of IEEE C57.12.00, Utilities Electric Department will (1) either reject it, (2)
include it on these averages, or (3) calculate losses and assess penalties individually, whichever is most favorable to
Utilities Electric Department.
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Special Conditions and Supplemental Instructions to Bidders
Applicable to Specification 368-310
A. Data to be supplied with Bidder's Proposal
The following data shall be supplied with the bidder's proposal in addition to that information required by the "Invitation
to Bid" and the "Purchase Requisition".
1. Impedance volts in percent (%) at full load, high voltage to low voltage at 85°C
2. No load losses, full load losses, total losses, expected winding’s stray losses, auxiliary devices’ losses all
corrected to a reference of 85°C. Please see Section 4 – Losses for more information.
3. Delivery in weeks
4. A statement indicating compliance with our Specification with exception or a detailed list of exceptions.
5. Escalation IS ______ / IS NOT ______ applicable for the transformers bid. If escalation applies, the Bidder
shall indicate in his bid, the specific items or materials subject to escalation and shall provide the method and
indices to be used in computing the amount thereof. Escalation occurring after acceptance, if Purchaser
exercises the option to delay shipment after manufacturing is completed, will not be paid.
If the above information and compliance statement are not supplied the proposal will not be evaluated
An alternate bid for the total order may be submitted in addition to the unit bids.
B. Loss Evaluations
Loss penalties and loss evaluations will be based on the following values:
1. No-load or excitation losses at $3.90/watt
2. Load losses at $2.30/watt
C. Shipping Terms
Ship F.O.B. point of destination, freight prepaid.
D. Terms of Payment
1. If escalation applies, the City of Fort Collins shall not be billed for escalation occurring after the promised
delivery date.
2. Electronic test reports as describe in Section 7.1.2 shall be sent via E-mail to standardsengineering@fcgov.com
and shall accompany the invoice sent to the Material Control Section. If test reports do not accompany the
invoice, late payment penalty charges incurred due to delays in obtaining the test reports will not be paid.
3. Loss penalty credits and escalation charges shall be itemized on the invoice.
Item Qty Description Unit Price
Shipment
ARO
Howard Industries, Inc.
Utility Transformer Division
P.O. Box 1588
Laurel, MS 39441-1588
Phone: 601 425 3151
Fax: 601 649 8090
QUOTATION
FOB:
PRICING:
AGENT:
VALIDITY:
TERMS:
INQUIRY:
QUOTATION NO:
QUOTATION DATE:
PAGE NO:
UNCONTROLLED COPY
UNLESS VIEWED ON A PC FROM THE ‘QCShare on Howardpdc Drive
Document: 2.3.01
Revision: 1
Authorized: RSS
CUSTOMER COPY
DESTINATION 30 DAYS HL-8798
FT. COLLINS LT & POW FIRM FOR QUOTED SHIPMENT NET 30 DAYS 06/28/2016
P.O. BOX 580 AMERICAN POWER & COMM-WE FORT COLLINS 1
FT. COLLINS, CO 80522
ITEM 1 1 PRODUCT: 3-PHASE SUBMERSIBLE $10,464.00 12-14 WKS
KVA: 150 KVA
HV: 13200GRDY/7620 + GRD 95KV BIL
LV: 208Y/120 30KV BIL
TAPS: (2) 2-1/2 ABOVE & BELOW
LOSSES: NO LOAD = 396, LOAD = 909, TOTAL = 1305
IMPED = 2.1
OIL TYPE: MINERAL
QUOTED PER CUSTOMER SPEC DATED 6/20/16
EVALUATED: NO LOAD = 3.90 LOAD = 2.30
THREE PHASE SUBMERSIBLE, DEAD FRONT, RADIAL FEED.
2016 DOE COMPLIANT
ORDERS REQUIRING APPROVAL DRAWINGS: LEADTIMES QUOTED ASSUME THAT APPROVAL
DRAWINGS WILL BE SIGNED AND RETURNED TO HOWARD INDUSTRIES WITHIN TWO WEEKS OF
RECEIPT OF SAID DRAWING. SHOULD THE PROCESS REQUIRE ANY ADDITIONAL TIME BEYOND
THESE TWO WEEKS, THAT ADDITIONAL TIME WILL BE ADDED TO THE QUOTED LEADTIME.
TRANSFORMERS ON THIS QUOTATION ARE DESIGNED TO COMPLY WITH DOE EFFICIENCY
REQUIREMENTS EFFECTIVE FOR COVERED TRANSFORMERS COMPLETING MANUFACTURE BEGINNING
JANUARY 1, 2016.
LAST PAGE SUBMITTED BY LAKETIA HILL
Standard Terms and Conditions
For the Sale of Fluid-Filled Distribution Transformers
(Domestic)
General
The standard terms and conditions as stated herein constitute the sales contract between Howard
Industries, Inc., (hereinafter referred to as “Supplier") and the Purchaser, unless otherwise noted on a
Supplier quotation or order acknowledgement. In the event of a conflict between the provisions of a
Supplier quotation or order acknowledgement and the standard terms and conditions as stated herein,
the provisions of the Supplier’s quotation or order acknowledgement shall prevail.
No part of these standard terms and conditions may be altered nor may any additions or deletions be
made unless authorized in writing by the Supplier’s Marketing Department.
Quotations
Prices shall be quoted F.O.B. destination, freight prepaid. Quoted prices shall not include sales, use,
excise, or any other state and local taxes for which the Purchaser may be liable. Written and verbal
quotations shall expire thirty (30) days from the date of the quotation.
Purchase Orders
All purchase orders shall be subject to the approval of the Supplier’s Marketing Department. The
Supplier shall reserve the right to decline any order.
Schedules
Upon receipt of a purchase order and its entry into the production schedule, the Supplier shall send to
the Purchaser an acknowledgment, which states and estimated shipping schedule. It shall be the
Supplier’s intent to honor this schedule if at all possible.
The Supplier shall not be held liable for delay in performance or failure to perform its obligations, if such
delay or failure to perform results from situations not reasonably within the Supplier’s control, including
acts of God, strikes or other labor disputes, civil or military insurrection or riot, delays in transportation,
delays as a result of poor vendor performance; causalities such as fire or explosion, or the acts,
regulations, or restrictions of governmental authorities.
In cases where the Purchaser requires approval drawings, the production schedule shall begin on the
date the approved drawings are received by the Supplier’s Marketing Department. This schedule shall
be based on current production capabilities and shall supersede any previously stated schedule.
Modification of existing orders by the Purchaser may cause a change in the originally stated shipping
schedule.
The Supplier reserves the right to manufacture and ship any items in advance of the acknowledged
shipping schedule, unless expressly forbidden by the Purchaser at the time of the order entry.
Cancellation and Modification
The Supplier may hold the Purchaser liable for any expenses incurred or commitments made on any
purchase order which is canceled or modified by the Purchaser. In the event the Supplier chooses to
manufacture any items in advance of the acknowledged schedule and such advance manufacture is not
expressly forbidden by the Purchaser, such advance manufacture shall not void the Purchaser’s liability
for modifications and cancellation charges as stated herein.
Document 2.4.20, Revision 5 Page 1 of 2
Howard Industries, Inc.
Payment
All accounts are payable net thirty (30) days after the date of the invoice. If Purchaser fails to pay any
invoice in full within the time stated in the payment terms hereof, Seller may, without notice, accelerate
the due date of all outstanding invoices and require that all outstanding invoices, including any interest
thereon, be immediately due and payable in full.
Warranty
Howard Industries, Inc. (hereinafter “Supplier”) warrants to the original Purchaser that distribution
transformers (hereinafter “Equipment”) manufactured by Supplier shall be free from defects in material
and workmanship under normal use and service conditions. The term of this Warranty shall be the
lesser of twelve (12) months from the date of initial installation or eighteen (18) months from date of
manufacture.
If within the Warranty period any Equipment shall be proved to Supplier’s satisfaction to be defective,
such Equipment shall be repaired or replaced at the Supplier’s option. Decision on the method and
extent of repairs rests solely with Supplier. Supplier’s obligation hereunder shall be limited to such
repair or replacement, F.O.B. its factory, and shall be conditioned upon Supplier’s receiving written
notice of any alleged defect within ten (10) days after its discovery and at Supplier’s option, return of
such Equipment or parts prepaid to Supplier’s factory. The costs for removal of defective Equipment and
re-installation of repaired or replaced Equipment shall be at Purchaser’s expense.
In order to be covered by this Warranty, the Equipment must be properly installed according to accepted
industry practices and protected by properly installed and coordinated voltage surge suppressors,
current overload, and other current protective devices as appropriate. This Warranty does not cover
Equipment that has been subjected to negligence, abuse, accident, damage by circumstances beyond
Supplier’s reasonable control; improper installation, operation, maintenance or storage; modification
other than by Supplier; or storage or operation in “Unusual Service Conditions” as defined by IEEE
Standard C57.12.00.
In order to qualify for repair or replacement under the provisions of this Warranty, the Supplier may
require that defective Equipment be returned to the Supplier’s factory and in such event will provide
written authorization to Purchaser. The Supplier will not be responsible for Equipment returned without
such written authorization. The Supplier will assume no liability for expenses incurred for repair or
replacement of Equipment that is not in accordance with the provisions of this Warranty.
THIS WARRANTY STATES THE SUPPLIER’S ENTIRE AND EXCLUSIVE LIABILITY AND THE
PURCHASER’S EXCLUSIVE REMEDY AND SUPPLIER HEREBY DISCLAIMS ALL OTHER
WARRANTIES OF ANY SORT, EXPRESS OR IMPLIED, EXCEPT THAT OF TITLE, AND SUPPLIER
HEREBY SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY,
COURSE OF DEALING, USAGE OF TRADE AND FITNESS FOR A PARTICULAR PURPOSE,
NOTWITHSTANDING ANY PURPORTED TERMS AND CONDITIONS CONTAINED IN ANY
DOCUMENT PREPARED BY PURCHASER IN CONNECTION WITH THIS SALE. SUPPLIER SHALL
NOT BE LIABLE FOR CONSEQUENTIAL, SPECIAL OR INCIDENTAL DAMAGES OF ANY KIND
WHATSOEVER, INCLUDING, BUT NOT LIMITED TO, LOSS OF REVENUE OR PROFITS.
Document 2.4.20, Revision 5 Page 2 of 2
Howard Industries, Inc.