HomeMy WebLinkAboutBID - 7505 TRANSFORMERS 2000KVA PAD-MOUNTED COMPARTMENTAL TYPE 3-PHASE DISTRIBUTIONINVITATION TO BID
7505 TRANSFORMERS 2000 KVA PAD-MOUNTED COMPARTMENTAL TYPE
THREE-PHASE DISTRIBUTION
BID OPENING: 3:00 P.M. (our clock), April 26, 2013
Sealed bids will be received and publicly opened at the office of the Director of Purchasing and
Risk Management, PO Box 580, 215 North Mason St., 2nd floor, Fort Collins, Colorado 80522,
at the time and date noted on the bid proposal and/or contract documents. If delivered, they are
to be sent to 215 North Mason Street, 2nd Floor, Fort Collins, Colorado 80524. If mailed, the
address is P.O. Box 580, Fort Collins, 80522-0580.
Bids must be received at the Purchasing Office prior to 3:00 p.m. (our clock), April 26,
2013.
The City encourages all disadvantaged business enterprises to submit bid in response to all
invitations and will not be discriminated against on the grounds of race, color, national origin.
Questions regarding bid submittal or process should be directed to
Opal Dick, CPPO, Senior Buyer at (970) 221-6778 or odick@fcgov.com.
A copy of the Bid may be obtained as follows:
1. Download the Bid from the Purchasing Webpage, Current Bids page, at:
http://fcgov.com/eprocurement
Special Instructions
All bids must be properly signed by an authorized representative of the company with the legal
capacity to bind the company to the agreement. Bids may be withdrawn up to the date and hour
set for closing. Once bids have been accepted by the City and closing has occurred, failure to
enter into contract or honor the purchase order will be cause for removal of supplier's name
from the City of Fort Collins' bidders list for a period of twelve months from the date of the
opening. The City may also pursue any remedies available at law or in equity. Bid prices must
be held firm for a period of forty-five (45) days after bid openings.
Submission of a bid is deemed as acceptance of all terms, conditions and specifications
contained in the City's specifications initially provided to the bidder. Any proposed modification
must be accepted in writing by the City prior to award of the bid.
Only bids properly received by the Purchasing Office will be accepted. All bids should be clearly
identified by the bid number and bid name contained in the bid proposal.
No proposal will be accepted from, or any purchase order awarded, to any person, firm or
corporation in default on any obligation to the City.
Bids must be furnished exclusive of any federal excise tax, wherever applicable.
Financial Services
Purchasing Division
215 N. Mason St. 2nd Floor
PO Box 580
Fort Collins, CO 80522
970.221.6775
970.221.6707
fcgov.com/purchasing
Bidders must be properly licensed and secure necessary permits wherever applicable.
Bidders not responding to this bid will be removed from our automated vendor listing for the
subject commodities.
The City may elect where applicable, to award bids on an individual item/group basis or on a
total bid basis, whichever is most beneficial to the City. The City reserves the right to accept or
reject any and all bids, and to waive any irregularities or informalities.
Sales prohibited/conflict of interest: no officer, employee, or member of City Council, shall have
a financial interest in the sale to the City of any real or personal property, equipment, material,
supplies or services where such officer or employee exercises directly or indirectly any decision-
making authority concerning such sale or any supervisory authority over the services to be
rendered. This rule also applies to subcontracts with the City. Soliciting or accepting any gift,
gratuity, favor, entertainment, kickback or any items of monetary value from any person who
has or is seeking to do business with the City of Fort Collins is prohibited.
Freight terms: unless otherwise noted, all freight is F.O.B. Destination, Freight Prepaid. All
freight charges must be included in prices submitted on proposal.
Discounts: any discounts allowed for prompt payment, etc., must be reflected in bid figures and
not entered as separate pricing on the proposal form.
Purchasing restrictions: your authorized signature of this bid assures your firm's compliance
with the City's purchasing restrictions. A copy of the resolutions is available for review in the
Purchasing Office or the City Clerk's Office. Request Resolution 91-121 for cement restrictions.
Collusive or sham bids: any bid deemed to be collusive or a sham bid will be rejected and
reported to authorities as such. Your authorized signature of this bid assures that such bid is
genuine and is not a collusive or sham bid.
Bid results: for information regarding results for individual bids send a self-addressed,
self-stamped envelope and a bid tally will be mailed to you. Bid results will be posted in our
office 7 days after the bid opening.
John D. Stephen, CPPO, LEED AP
Interim Director of Purchasing and Risk Management
FIRM NAME:_____________________________
CITY OF FORT COLLINS
BID PROPOSAL
BID NO. 7505
Transformers 2000 kVA Pad-Mounted Compartmental-Type, Three-Phase Distribution
BID DATE: 3:00 p.m. (Our clock) April 26, 2013
WE HEREBY ENTER OUR BID FOR THE CITY OF FORT COLLINS' REQUIREMENTS
FOR 2000 kVA PAD-MOUNTED COMPARTMENTAL-TYPE, THREE-PHASE DISTRIBUTION
TRANSFORMERS, PER THE BID INVITATION AND ANY REFERENCED SPECIFICATIONS.
QUANTITY: DESCRIPTION:
5 Ea. TRANSFORMER, 2000 kVA PAD-MOUNTED COMPARTMENTAL
TYPE, THREE PHASE DISTRIBUTION WITH SEPARABLE
INSULATED LOAD BREAK HIGH VOLTAGE CONNECTORS.
HIGH VOLTAGE RATING: 13200 GRDY/7620.
LOW VOLTAGE RATING: 480Y/277.
SERIAL NUMBER 201 TO BE IN ACCORDANCE WITH
SPECIFICATION #368-300-201, REVISION OO
PLEASE COMPLETE THE ATTACHED EXCEL SPREAD SHEET
FOR BID SUBMITTAL.
IF YOU ELECT TO PASSWORD PROTECT YOUR BID, PLEASE
NOTE THAT PASSWORD BELOW.
_______________________________
*Any surcharges or additional costs shall be noted & included in bid submittal.
Fort Collins Utilities has updated its three-phase pad-mounted transformer specification.
There are many significant updates and changes that require close attention from the
bidder. There are several changes that require the bidder to submit additional information to
what was previously required. The inclusion of this information in the bidder’s quote is
imperative in order to be considered a responsive bid. Any bid considered to be unresponsive is
subject to rejection by Fort Collins Utilities. For a list of major changes to the material
specification, please reference the “Revision Descriptions” section at the beginning of the
specification. The new version of the specification is Revision OO.
The transformers being bid meet or exceed the specifications. _______ Yes ______No. If not,
please list exceptions,(specifying paragraph reference number) on a separate sheet of paper
and attach to your bid.
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 give
the method and indices to be used in computing the amount thereof. Escalation occurring after
the quoted delivery date will not be paid unless delays are the result of actions by the city.
Escalation occurring after acceptance if purchaser exercises the option to delay shipment after
manufacturing is completed, will not be paid.
Delivery may be a consideration of bid award.
For purposes of warranty and service ONLY approved manufacturers or distributors authorized
by an approved manufacturer to serve the Fort Collins area may bid.
The City of Fort Collins reserves the right to split the bid in whatever percentages are most
advantageous to the City.
Future orders of Pad-Mounted Compartmental-Type, Three-Phase Distribution
Transformers may be authorized, at the option of the City, from this bid for a period of five
years after date of award. Satisfactory pricing and delivery is required for future orders based on
this bid.
SUPPLEMENTAL INSTRUCTIONS
Prices quoted must remain firm for a 30 day period after the opening date.
Freight terms: F.O.B. destination freight prepaid. All freight charges must be included in pricing
submitted on proposal and not entered as separate pricing.
Any discount allowed by Vendor for prompt payment, etc. must be reflected in quoted figure,
and not entered as separate pricing.
The City reserves the right to accept or reject any and all quotes.
Bidder not responding to the services requested in this bid shall be removed from our
automated listing for: Not Applicable
Any questions or inquiries regarding this bid should be directed to:
Opal F. Dick, CPPO, Senior Buyer
(970) 221-6778
____________________________________________________________________________
SIGNATURE AND TITLE: TYPED OR PRINTED NAME AND TITLE
____________________________________________________________________________
COMPANY NAME: (AREA CODE) TELEPHONE NUMBER/FAX NUMBER
____________________________________________________________________________
ADDRESS: STREET, CITY, STATE, ZIP DATE
EMAIL
Purchase Order Terms and Conditions
1. COMMERCIAL DETAILS.
Tax exemptions. By statute the City of Fort Collins is exempt from state and local taxes. Our Exemption
Number is 98-04502. Federal Excise Tax Exemption Certificate of Registry 84-6000587 is registered with the
Collector of Internal Revenue, Denver, Colorado (Ref. Colorado Revised Statutes 1973, Chapter 39-26, 114 (a).
Goods Rejected. GOODS REJECTED due to failure to meet specifications, either when shipped or due to
defects of damage in transit, may be returned to you for credit and are not to be replaced except upon receipt of
written instructions from the City of Fort Collins.
Inspection. GOODS are subject to the City of Fort Collins inspection on arrival.
Final Acceptance. Receipt of the merchandise, services or equipment in response to this order can result in
authorized payment on the part of the City of Fort Collins. However, it is to be understood that FINAL
ACCEPTANCE is dependent upon completion of all applicable required inspection procedures.
Freight Terms. Shipments must be F.O.B., City of Fort Collins, 700 Wood St., Fort Collins, CO 80522, unless
otherwise specified on this order. If permission is given to prepay freight and charge separately, the original
freight bill must accompany invoice. Additional charges for packing will not be accepted.
Shipment Distance. Where manufacturers have distributing points in various parts of the country, shipment is
expected from the nearest distribution point to destination, and excess freight will be deducted from Invoice
when shipments are made from greater distance.
Permits. Seller shall procure at sellers sole cost all necessary permits, certificates and licenses required by all
applicable laws, regulations, ordinances and rules of the state, municipality, territory or political subdivision
where the work is performed, or required by any other duly constituted public authority having jurisdiction over
the work of vendor. Seller further agrees to hold the City of Fort Collins harmless from and against all liability
and loss incurred by them by reason of an asserted or established violation of any such laws, regulations,
ordinances, rules and requirements.
Authorization. All parties to this contract agree that the representatives are, in fact, bona fide and possess full
and complete authority to bind said parties.
LIMITATION OF TERMS. This Purchase Order expressly limits acceptance to the terms and conditions stated
herein set forth and any supplementary or additional terms and conditions annexed hereto or incorporated herein
by reference. Any additional or different terms and conditions proposed by seller are objected to and hereby
rejected.
2. DELIVERY.
PLEASE ADVISE PURCHASING AGENT immediately if you cannot make complete shipment to arrive on
your promised delivery date as noted. Time is of the essence. Delivery and performance must be effected within
the time stated on the purchase order and the documents attached hereto. No acts of the Purchasers including,
without limitation, acceptance of partial late deliveries, shall operate as a waiver of this provision. In the event
of any delay, the Purchaser shall have, in addition to other legal and equitable remedies, the option of placing
this order elsewhere and holding the Seller liable for damages. However, the Seller shall not be liable for
damages as a result of delays due to causes not reasonably foreseeable which are beyond its reasonable control
and without its fault of negligence, such acts of God, acts of civil or military authorities, governmental
priorities, fires, strikes, flood, epidemics, wars or riots provided that notice of the conditions causing such delay
is given to the Purchaser within five (5) days of the time when the Seller first received knowledge thereof. In
the event of any such delay, the date of delivery shall be extended for the period equal to the time actually lost
by reason of the delay.
3. WARRANTY.
The Seller warrants that all goods, articles, materials and work covered by this order will conform with
applicable drawings, specifications, samples and/or other descriptions given, will be fit for the purposes
intended, and performed with the highest degree of care and competence in accordance with accepted standards
for work of a similar nature. The Seller agrees to hold the purchaser harmless from any loss, damage or expense
which the Purchaser may suffer or incur on account of the Sellers breach of warranty. The Seller shall replace,
repair or make good, without cost to the purchaser, any defects or faults arising within one (1) year or within
such longer period of time as may be prescribed by law or by the terms of any applicable warranty provided by
the Seller after the date of acceptance of the goods furnished hereunder (acceptance not to be unreasonably
delayed), resulting from imperfect or defective work done or materials furnished by the Seller. Acceptance or
use of goods by the Purchaser shall not constitute a waiver of any claim under this warranty. Except as
otherwise provided in this purchase order, the Sellers liability hereunder shall extend to all damages
proximately caused by the breach of any of the foregoing warranties or guarantees, but such liability shall in no
event include loss of profits or loss of use. NO IMPLIED WARRANTY OR MERCHANTABILITY OR OF
FITNESS FOR PURPOSE SHALL APPLY.
4. CHANGES IN LEGAL TERMS.
The Purchaser may make changes to legal terms by written change order.
THE CITY OF FORT COLLINS
Light and Power Department
P.O. Box 580
Fort Collins, CO 80522
SPECIFICATION NO: 368-300
TITLE: PAD-MOUNTED COMPARTMENTAL-TYPE,THREE-PHASE
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: 8/12/83
REVISED: 4/2/2013
REV. SYM: OO
2
368-300
ITEMS COVERED BY THIS SPECIFICATION
DESCRIPTION
STOCK NO.
SPECIFICATION NO. SERIAL
75 KVA, 208Y/120 RADIAL 368-300 -006
75 KVA, 408Y/277 RADIAL 368-300 -007
75 KVA, 208Y/120 LOOP 368-300 -008
75 KVA, 480Y/277 LOOP 368-300 -009
150 KVA, 208Y/120 LOOP 368-300 -015
150 KVA, 480Y/277 LOOP 368-300 -016
300 KVA, 208Y/120 LOOP 368-300 -030
300 KVA, 480Y/277 LOOP 368-300 -031
500 KVA, 208Y/120 LOOP 368-300 -050
500 KVA, 480Y/277 LOOP 368-300 -051
750 KVA, 208Y/120 LOOP 368-300 -075
750 KVA, 480Y/277 LOOP 368-300 -076
1000 KVA, 208Y/120 LOOP 368-300 -100
1000 KVA, 480Y/277 LOOP 368-300 -101
1500 KVA, 480Y/277 LOOP 368-300 -151
2000 KVA, 480Y/277 LOOP 368-300 -201
2500 KVA, 480Y/277 LOOP 368-300 -251
REV. SYM: OO
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368-300
REVISION DESCRIPTIONS
REVISION DESCRIPTION (Previous on file) APPROVED
REVISION FF:
Add Paragraph 5.2.2.9.3: pentahead locking bolts
Paragraph 3.2.2.13.1: add glossy requirement.
Tim Sagen
Susan Coram
10-18-95
REVISION GG:
Title page: Remove revised date
Paragraph 4.4 and Table 2A: Change Temperature Tests and Noise Test from every
unit to one unit of design.
Susan Coram
Tim Sagen
9-22-95
REVISION HH:
GE removed from Appendix B
Opal Dick
Tim Sagen
12-13-96
REVISION II:
Add paragraph 3.2.2.10 OVERCURRENT PROTECTION and renumber remaining
paragraphs in section 3.2
Revise Fig. 1 to reflect a "V" configuration for the primary bushing arrangement vs. an
in-line arrangement.
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
Opal Dick
Tim Sagen
6/3/99
REVISION JJ
Reformat and converted to MS Word, delete List of Active Pages
Bill Bray
Tim Sagen
9 /14 / 2000
REVISION KK
Added drawing 1a to describe cable accessory parking stand detail, revise to reflect
current editions of national standards, change impedance on 368-300-009 from
1.7% to 1.9%.
Kraig Bader
Tim Sagen
9 / 11 / 2001
REVISION LL
Change fusing from oil-immersed current sensing weak link cartridge to a current
sensing bay-o-net fuse link in series with an ELSP current limiting backup
fuse (clause 3.2.2.10).
Change column header for impedance table in 3.2.2.1 to clarify that impedance
numbers are nominal values. (Tolerances are consistent with ANSI C.57.12.00-
2000)
Changed wording from “Mr. Ouch” in 3.2.2.15 to “warning label”
Kraig Bader
4/2/2004
Revision MM
Change clause 3.2.2.10 to specify current sensing bay-o-net fuse link by size and
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
REV. SYM: OO
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368-300
Added reference to IEEE C57.12.28 – Enclosure Integrity and requirement for an
additional enclosure security design test (See section 3.1.3.2).
Added IEEE C57.12.37 – Electronic Reporting of Distribution Transformer Test Data
as a reference standard. Amended section 5.1.2 to include details for the application
of IEEE C57.12.37.
Changed requirement for operation of compartment doors so that access to the low-
voltage compartment is allowed only after the door to the high-voltage compartment
has been opened in order to reduce hazards associated with arc flash.
Added section on DOE Energy Efficiency Requirements.
Changed Table 1 to include Impedance Tolerances; deleted bushing arrangement
from Table and inserted description and reference in Section 3.2.2.5.3.
Amended section 3.2.2.7.6 to specify a pressure relief device that includes detection
and indication of internal transformer faults. The approved device is manufactured
by IFD Corporation.
Changed Table 3 to include Impedance Tolerances; deleted bushing arrangement
from Table and inserted description and reference in Section 3.3.2.2.
Moved and updated section on Losses (now Section 4) to include new required
information to be submitted by manufacturers during the bid process. Additional
information to be supplied includes expected winding’s stray losses and losses
associated with auxiliary devices such as fuses, breakers, switches, etc. Also
updated Special Conditions and Supplemental Instructions to Bidders with new
required losses information.
Added Central Moloney to the Conditionally Approved Manufacturers list.
Deleted Individual Transformer Loss Evaluation Form. Typically, orders include
more than one unit and the average form is used. Fort Collins Utilities has always
and continues to reserve the right to calculate losses and assess penalties
individually, if favorable to Fort Collins Utilities.
Added Special Conditions and Supplemental Instructions to Bidders to the end of
this specification. Previously, this had been submitted to Bidders separately. This
merge helps to maintain consistency among transformer specifications.
REV. SYM: OO
5
368-300
TABLE OF CONTENTS
ITEMS COVERED BY THIS SPECIFICATION ................................................................................................................................ 2
REVISION DESCRIPTIONS .................................................................................................................................................................
3
1. SCOPE ..................................................................................................................................................................................................
6
2. APPLICABLE DOCUMENTS ........................................................................................................................................................... 6
3. REQUIREMENTS ...............................................................................................................................................................................
6
3.1 GENERAL REQUIREMENTS FOR DESIGN ................................................................................................................................ 6
3.2 SPECIFIC REQUIREMENTS FOR DESIGN OF LOOP -FEED UNITS ........................................................................................ 8
3.3 SPECIFIC REQUIREMENTS FOR DESIGN OF RADIAL -FEED UNITS ................................................................................. 17
4. LOSSES ..............................................................................................................................................................................................
17
5. QUALITY ASSURANCE .................................................................................................................................................................
18
5.1 GENERAL .....................................................................................................................................................................................
18
5.2 TEST CONDITIONS .....................................................................................................................................................................
18
5.3 FUNCTIONAL TESTS ..................................................................................................................................................................
18
5.4 TEST METHODS -- FUNCTIONAL TESTS ................................................................................................................................ 19
6. PREPARATION FOR DELIVERY ................................................................................................................................................. 19
7. DEFINITIONS AND ABBREVIATIONS ....................................................................................................................................... 20
APPENDIX A – TRANSFORMER PAD DESIGNS .......................................................................................................................... 21
APPENDIX B – APPROVED MANUFACTURERS ......................................................................................................................... 25
APPENDIX C – TRANSFORMER LOSS EVALUATION ............................................................................................................... 26
SPECIAL CONDITIONS AND SUPPLEMENTAL INSTRUCTIONS TO BIDDERS APPLICABLE TO SPECIFICATION
368-300 ....................................................................................................................................................................................................
27
REV. SYM: OO
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368-300
SPECIFICATION FOR
PAD-MOUNTED COMPARTMENTAL-TYPE, 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, compartmental-type distribution transformers rated 2500 kVA and
smaller, high voltage 13,200 Grd Y/7620 volts, with separable insulated load break high voltage connectors. These
transformers are used for step down purposes from an underground primary cable supply.
This standard generally conforms to Institute of Electrical and Electronics Engineers (IEEE) requirements for pad-
mounted, compartmental-type, self-cooled, three-phase distribution transformers, 5 MVA and smaller; High Voltage, 34.5
kV nominal system voltage and below; Low Voltage, 15 kV nominal system voltage and below, C57.12.34.
2. APPLICABLE DOCUMENTS
The following documents form a part of this Specification to the extent specified herein. The latest issue in effect on the
date of invitation for bids shall form a part of this Specification, unless otherwise noted.
IEEE C57.12.00 - Standard for General Requirements for Liquid-Immersed Distribution, Power, and Regulating
Transformers
IEEE C57.12.28 – Standard for Pad-Mounted Equipment – Enclosure Integrity
IEEE C57.12.34 – Pad-mounted, compartmental-type, self-cooled, three-phase distribution transformers, 5 MVA
and smaller;, high voltage 34.5 kV nominal system voltage and below; low voltage, 15 kV nominal
system voltage and below
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
NEMA STANDARD TR1 - Transformers, regulators and reactors
3. REQUIREMENTS
3.1 GENERAL REQUIREMENTS FOR DESIGN
3.1.1 BASIC DESIGN STANDARDS
Transformers purchased under these Specifications shall be new and, unless otherwise specified, meet the
requirements of the applicable ANSI Standards and the modifications and additions given in the subsequent
paragraphs. In case of conflict, the requirements of the following documents shall apply in the priority shown:
a) This Specification.
b) IEEE C57.12.34
c) Other applicable ANSI and NEMA Standards.
3.1.2 KILOVOLT-AMPERE TEMPERATURE RATINGS
Kilovolt-ampere ratings are continuous and are based on not exceeding either a 65°C average winding
temperature or an 80°C hot spot temperature rise. The temperature rise of the insulating oil shall not exceed
65°C when measured near the top of the tank. The temperature rise is based on an altitude of 3,300 feet.
REV. SYM: OO
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368-300
3.1.3 GENERAL CONSTRUCTION
3.1.3.1 Transformers shall conform to IEEE Standard for Pad-Mounted Equipment – Enclosure Integrity,
C57.12.28. The pad-mounted compartmental-type transformers shall consist of the transformer tank,
high-voltage cable terminating compartment, and the low-voltage cable-terminating compartment. All
three of these components shall be assembled as an integral unit, tamperproof and weatherproof for
mounting on a pad. There shall be no exposed screws, bolts or other fastening devices, which are
externally removable, except the main cover bolts may be exposed. Where the main cover bolts are
exposed, the corner bolts shall be welded or otherwise rendered tamperproof. There shall be no opening
through which foreign objects such as sticks, rods, or wires might be inserted to contact live parts.
Suitable means for padlocking the compartment door(s) shall be provided.
3.1.3.2 In addition to the enclosure security design tests listed in Section 4.3.1 of IEEE C57.12.28, the
manufacturer shall perform an “Operation test”. The unit shall be lifted, utilizing provided lifting lugs, at
least one meter in accordance with the manufacturer’s standard lift instructions and then set again on a
flat surface. The doors shall be easily opened, closed, latched and locked without requiring adjustments
to the cabinet, latch mechanism and/or enclosure door(s). All of the door latch points must fully engage
when the door is closed.
3.1.3.3 The high and low-voltage compartment shall be located side by side on one side of the transformer tank.
When facing the compartment, the low-voltage compartment shall be on the right. Each compartment
shall have a door so constructed as to provide access to the low-voltage compartment only after the door
to the high-voltage compartment has been opened in order to reduce hazards associated with arc flash.
There shall be one or more additional captive fastening devices that must be disengaged before the low-
voltage door can be opened.
3.1.3.4 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.
3.1.3.5 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.
3.1.3.6 Minimum dimensions shall be as shown in Fig. 1 of this Specification. Maximum transformer and
minimum pad dimensions are shown in Fig. 6 of this Specification.
3.1.4 ENERGY EFFICIENCY
Transformers shall be designed to meet the minimum energy efficiency ratings defined in the United States
Department of Energy October 12, 2007 Final Rule: 10 CFR Part 31, Energy Conservation Program for
Commercial Equipment: Distribution Transformers Energy Conservation Standards.
3.1.5 SERVICE CONDITIONS
Service conditions shall be as defined in paragraph 4.1 of IEEE 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.
REV. SYM: OO
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3.2 SPECIFIC REQUIREMENTS FOR DESIGN OF LOOP -FEED Units
3.2.1 FUNCTIONAL DESCRIPTION
The transformer shall be a three phase, pad mounted, loop feed-safe break, “deadfront” type for use on a 13.2
kV grounded “Y” distribution system.
3.2.2 DESIGN AND CONSTRUCTION
3.2.2.1 RATINGS
Table 1 - Loop-Feed Transformer Ratings
Stock No. kVA Low
Voltage
Nominal
Impedance
Impedance Tolerance1
Minimum Maximum
368-300- 008 75 208Y/120 1.9% 1.71% 2.09%
368-300- 009 75 480Y/277 1.9% 1.53% 1.87%
368-300- 015 150 208Y/120 2.1% 1.89% 2.31%
368-300- 016 150 480Y/277 2.1% 1.89% 2.31%
368-300- 030 300 208Y/120 2.5% 2.25% 2.75%
368-300- 031 300 480Y/277 2.5% 2.25% 2.75%
368-300- 050 500 208Y/120 3.04% 2.81% 3.27%
368-300- 051 500 480Y/277 3.04% 2.81% 3.27%
368-300- 075 750 208Y/120 5.75% 5.32% 6.18%
368-300- 076 750 480Y/277 5.75% 5.32% 6.18%
368-300- 100 1000 208Y/120 5.75% 5.32% 6.18%
368-300- 101 1000 480Y/277 5.75% 5.32% 6.18%
368-300- 151 1500 480Y/277 5.75% 5.32% 6.18%
368-300- 201 2000 480Y/277 5.75% 5.32% 6.18%
368-300- 251 2500 480Y/277 5.75% 5.32% 6.18%
1
Tolerances for impedance voltage shall be consistent with requirements in section 9.2 of IEEE C57.12.00-2010.
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 Section 5.10 of IEEE
C57.12.00-2010.
3.2.2.2.3 The unit shall withstand test voltages in accordance with IEEE 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.
3.2.2.4 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 in the primary compartment.
REV. SYM: OO
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3.2.2.5 BUSHING WELLS AND TERMINALS
3.2.2.5.1 The number, location, and arrangement of bushing wells, terminals and parking stands shall be as
shown in Fig. 1 and Fig. 5 of this specification. All low-voltage bushings and high-voltage wells
shall be externally clamped and shall have leads of sufficient length to allow them to be changed
without removing the cover. Welded bushings and wells are expressly prohibited.
3.2.2.5.2 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 not required that the bushing well insert be
supplied with the transformer.
3.2.2.5.3 Low voltage bushing arrangement and spacing shall be “staggered”, as shown in Fig. 5 of this
Specification. Transformers 500 kVA and smaller shall have low voltage terminals meeting the
requirements contained in Figure 15B of IEEE C57.12.34-2009; there shall also be a separate
spade included that meets requirements for the respective size of transformer contained in Figure
15A of IEEE C57.12.34-2009. Transformers larger than 500 kVA shall have low voltage terminals
meeting the requirements contained in Figure 15A of IEEE C57.12.34-2009.
3.2.2.5.4 The low-voltage neutral shall be a fully insulated bushing. A ground pad shall be provided on the
outer surface of the tank and a removable copper ground strap shall be provided and connected
between the low-voltage neutral bushing and the ground pad.
3.2.2.5.5 The high-voltage neutral shall be connected to the low-voltage neutral internally with provision for
opening this connection for testing.
3.2.2.6 ACCESSORY CABINET
3.2.2.6.1 The accessory cabinet shall consist of a high-voltage and low- voltage compartment generally
constructed in accordance with applicable IEEE 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 steel 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 1½ inches minimum, 3½ inches maximum.
3.2.2.7.2 The transformer base shall be arranged for rolling in two directions:
Parallel to and at right angles to the centerline of the high-voltage bushings.
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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 high-voltage compartment, and shall be readable with cables in place. 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 information specified in IEEE C57.12.00-2010, 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.
3.2.2.7.6 A non-resettable device which detects and provides external indication of internal transformer faults,
as well as incorporating automatic pressure relief functionality shall be provided. The pressure
relief device shall meet the following requirements:
¼” NPT or larger male Inlet Port.
Exposed parts of weather and corrosion resistant materials.
Non-deteriorating gasket and o-ring material.
Manual pull ring able to withstand a static force of 25 pounds for 1 minute without permanent
deformation. The valve shall also withstand for 1 minute a static force of 100 lbf applied normal
to its longitudinal axis at the outermost extremity of the body.
Bug shield to prevent entry of dust, moisture, and insects before and after the valve has
operated.
Cracking pressure of 10 ± 2 psig.
Resealing pressure of 6 psig minimum.
Zero leakage from resealing pressure to –8 psig.
Minimum flow rate of 35 SCFM at 15 psig.
The approved manufacturer for this device is IFD Corporation. Other devices meeting the
requirements defined in this specification shall be specifically approved in writing by Fort Collins
Utilities Engineering Standards Division.
3.2.2.8 OIL PRESERVATION
Transformers shall be of sealed-tank construction. Sealed-tank construction is that which seals the interior
of the tank from the atmosphere, and in which the gas plus the oil volume remains constant. The
transformer will remain effectively sealed for a top-oil temperature range of –32°C to 105°C.
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 IEEE C57.12.34-2009, Section 8.10, except
that a 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 Section 8.11 of IEEE C57.12.34-2009.
3.2.2.9.3 Locking bolts shall be pentahead style.
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3.2.2.10 OVERCURRENT PROTECTION
Overcurrent protection shall consist of a single element current sensing bay-o-net fuse link in series with an
ELSP current limiting backup fuse. Fuses shall be sized as shown in Table 2:
Table 2 – Fusing Requirements
Stock
Number
kVA
Capacity
Expulsion Fuse Continuous
Current Rating
(Part Number*)
Current Limiting Fuse
Continuous Current Rating
(Part Number*)
368-300-008
368-300-009
75kVA 10A
(4000353C06)
30A
3544030M61M
368-300-015
368-300-016
150kVA 15A
(4000353C08)
40A
(3544040M61M)
368-300-030
368-300-031
300kVA 25A
(4000353C10)
65A
(3544065M61M)
368-300-050
368-300-051
500kVA 40A
(4000353C12)
100A
(3544100M71M)
368-300-075
368-300-076
368-300-100
368-300-101
750kVA
750kVA
1000kVA
1000kVA
65A
(4000353C14)
125A
(3544125M71M)
368-300-151
368-300-201
1500kVA
2000kVA
140A
(4000353C17)
250A : Parallel 125A fuses
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Figure 1 - Accessory compartment & Bushing Dimensions (Config. 1)
480Y/277,208Y/120
NOTE:
* Denotes inside dimensions.
** See Fig.5
All dimensions in (inches).
Maximum dimensions shall allow one inch clearance from edge of pad (Fig. 6).
FLANGE 3/4" MIN
1 1/2" M
LOW VOLTAGE
RATINGS
750-1000
1500-2500
75-150
225-500
KVA RATINGS
6.5
38.0 MIN*
4.5 4.5
27.0
6.5 6.5 4.5
A* B
28
28
46
46
23.25
28
27
31
BUSHING
HEIGHT
COMPARTMENT
DIMENSIONS
(MINIMUM)
18.0 MIN*
A
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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)
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4.0"
MIN
B
6" RADIUS
TYPICAL 3
PLACES
4.0"
MIN
A
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.
8
10
6
480/277, 208Y/120 6
ALL
750-2500
225-500
75-150
LOW VOLTAGE A B
RATINGS
KVA RATINGS
AA
4.75 8
ALL
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KVA
SERIAL
PAD DIMENSIONS (inches)
A B C D E F
75 -006 thru –009 75 55 40 21 15 61
150 -015 75 55 40 21 15 61
150 -016 75 55 40 21 15 61
300 -030 75 55 40 21 15 61
300 -031 75 55 40 21 15 61
500 -050 75 55 40 21 15 61
500 -051 75 55 40 21 15 61
750 -076, -075 85 72 49 23 15 67
1000 -101, -100 85 72 49 23 15 67
1500 -151 101 87 51 23 15 76
2000 -201 107 88 51 23 15 79
2500 -251 107 88 51 23 15 79
Fig. 6 – Pad Dimensions
A
B
E
D
C
F
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TABLE 1A
ACCESSORY EQUIPMENT
ACCESSORY
KVA
75-150 300 500-2500
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 plug X
1” oil drain valve with sampling device X X
Upper filter press and filling plug (or cap) (1”) X X X
Provisions for oil gauge X
Provisions for pressure-vacuum gauge X X
Oil gauge X
Thermometer X X X
Secondary CT mounting holes
(4 holes on 4 3/8” x 5 5/8” centers)
X X X
Manual/automatic pressure relief valve X X X
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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 13.2
kV grounded “Y” distribution system.
3.3.2 DESIGN AND CONSTRUCTION
The requirements for radial-feed transformers shall be the same as those of loop-feed with the following
exceptions:
3.3.2.1 RATINGS
Table 3 - Radial-Feed Transformer Ratings
Stock No. kVA Low
Voltage
Nominal
Impedance
Impedance Tolerance1
Minimum Maximum
368-300- 006 75 208Y/120 1.9% 1.71% 2.09%
368-300- 007 75 480Y/277 1.9% 1.71% 2.09%
1. Tolerances for impedance voltage shall be consistent with requirements in section 9.2 of IEEE C57.12.00-2010.
3.3.2.2 BUSHING WELLS AND TERMINALS
The number, location, and arrangement of bushing wells, terminals and parking stands shall be as shown
in Figures 12 and 13A of IEEE C57.12.34-2009. EXCEPTION: high voltage bushings shall be 32 - 36
inches above the base of the transformer.
Low voltage bushing arrangement and spacing shall be “staggered”, as shown in Figure 8 of IEEE
C57.12.34-2009.
4. 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 Table 18
and the following equation “Units” shall mean “Transformers of the same size and design on one order.”
Excess loss $ = [No. of units] [(No Load Loss Evaluation $) (Avg. No Load Losses – Quoted No Load Losses) + (Load
Loss Evaluation $) (Avg. Load Losses – Quoted Load Losses)]. If this equation results in a negative number no credit will
be given the Supplier.
If any unit or units exceed the tolerances of paragraph 9.3, 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:
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.
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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.
5. QUALITY ASSURANCE
5.1 GENERAL
5.1.1 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.
5.1.2 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. These reports shall be formatted in a comma delimited file as
specified in section 5.3 of IEEE C57.12.37-2006. These reports shall be sent to the Material Control Section
along with the invoice, and to Engineering Standards Division via Electronic Mail (E-mail). E-mail addresses
shall be provided to manufacturer upon award of bid.
5.2 TEST CONDITIONS
Unless otherwise specified, testing defined in Section 4.6 shall be conducted under the following conditions:
5.2.1 REFERENCE TEMPERATURE
The reference temperature to which losses, impedance, regulation, and efficiency are corrected shall be 85° C.
5.2.2 TOLERANCE ON IMPEDANCE VOLTAGE
Tolerance shall be as specified in Tables 1 and 3.
5.2.3 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.
5.3 FUNCTIONAL TESTS
Functional tests shall consist of those tests and related requirements as cross referenced in Table 4 and shall be
performed on each unit, except Temperature and Noise Tests which shall be performed on one unit of each design
(KVA) per order.
Table 4 - Functional Tests
TEST TEST PARAGRAPH REQUIREMENT OR REFERENCE
Examination Of Product 4.6 3.0, 3.1, 3.2, 3.3 (This specification)
Ratio 4.6 IEEE C57.12.00 Section 8
Polarity And Phase Relation 4.6 IEEE C57.12.00 Section 8
Excitation Loss 4.6 IEEE C57.12.00 Section 8
Excitation Current 4.6 IEEE C57.12.00 Section 8
Impedance & Load Loss 4.6 IEEE C57.12.00 Section 8
Temperature Tests* 4.6 IEEE C57.12.00 Section 8
Dielectric Tests 4.6.1 3.2.2.2 (This specification)
Impulse Tests 4.6.2 3.2.2.2 (This specification)
Leak Testing 4.6.3 3.2.2.8 & 3.2.2.9 (This specification)
Noise Testing* 4.6.4 3.2.2.12 (This specification)
*One unit per design per order.
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5.4 TEST METHODS -- FUNCTIONAL TESTS
Each completed unit shall be inspected to determine compliance with respect to dimensions, material,
workmanship, construction and marking, and routine tests on all units shall be made as specified in Section 8 of
IEEE Standard C57.12.00, and in IEEE Standard C57.12.90. In addition to routine tests, the following test
requirements and/or modifications shall apply.
5.4.1 DIELECTRIC TESTS
Induced and applied potential Dielectric Tests shall be performed in accordance with IEEE 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.
5.4.2 IMPULSE TESTS
IEEE Standard Impulse Tests shall be performed. Full Wave Impulse Test shall use a 1.5 x 50 microsecond
wave.
5.4.3 LEAK TESTING
The transformer tank shall be filled with oil and tested for air and oil leaks under (1) 4 psig vacuum for ½ hour,
(2) 7 psig pressure for 24 hours in the sequence indicated. An alternate method of leak testing may be
performed by injecting halogen gas under 10 psig and detecting leaks through the use of a halogen detector.
(Note, the automatic/manual pressure relief device must be removed for this test).
5.4.4 NOISE TESTING
Noise testing shall be conducted in accordance with applicable NEMA Standards.
6. 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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7. 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 – Transformer Pad Designs
Typical pad designs are shown in Figures 1A through 3A.
The dimensions in inches of Figures 1A through 3A will fit the minimum compartments on transformers covered by this
Specification as well as the maximum transformer envelope.
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Figure 1A - Pad Design (75 - 500 KVA)
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Figure 2A - Pad Design (500 - 1000 KVA)
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Figure 3A - Pad Design (1000-2500 KVA)
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APPENDIX B – 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
Cooper Power Systems
ASEA Brown-Bovari (ABB)
Howard Industries
CG Power Systems
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
Central Moloney
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APPENDIX C – 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 368-300
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 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 5.1.2 sent via E-mail 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. Electronic test reports shall also be sent via E-mail to
Engineering Standards Division, Fort Collins Utilities - Light & Power.
3. Loss penalty credits and escalation charges shall be itemized on the invoice.
(3544125M71M)
368-300-251 2500kVA 125A Hi-Amp OL Link C05CB 3 250A : Parallel 125A fuses
(3544125M71M)
* Fuse shall be as specified in the table above or shall be an equivalent as approved in
writing by Electric Standards Engineering.
3.2.2.11 COMPONENTS FOR LOOPED PRIMARY
The minimum current-carrying capability of components for the looped primary cable system shall be 200
amperes (continuous) and 10,000 amperes symmetrical (momentary).
3.2.2.12 AUDIBLE SOUND LEVEL
The audible sound level shall be in accordance with NEMA Standard TR1.
3.2.2.13 BASE PLAN
The base plan of a completely assembled unit shall be such that it can be installed on a pad of the
dimensions shown in Fig. 6 of this specification.
3.2.2.14 PAINT
3.2.2.14.1 Surfaces to be painted shall be blast cleaned (commercial blast) to provide a clean dry surface free
of dirt, dust, chalk, loose paint, rust, grease and any other contaminants.
3.2.2.14.2 EEI “Finishing Guidelines” specification shall apply. Finish coat shall be Desert Tan, Munsell
#10YR6.0/3.0, glossy.
3.2.2.15 SAFETY LABELS
The manufacturer shall not apply NEMA 260 Safety Labels. The Purchaser will apply custom warning labels
after delivery.
3.2.2.16 ANGULAR DISPLACEMENT:
Per Figure 16(b) of IEEE C57.12.34-2009.
Kraig Bader
2/2/2005
Revision NN
Change clause 3.2.2.5 to better clarify that the transformer manufacture need only
provide bushing wells that are compatible with IEEE 386 bushing well inserts, not
the inserts themselves.
Kraig Bader
24 August 2010
Revision OO
Updated all references from ANSI to IEEE standards. The standards development
process utilized by IEEE is approved by ANSI, so they do not explicitly place their
name on each IEEE standard anymore.
Updated references to IEEE C57.12.26, which is no longer active, to now reference
IEEE C57.12.34 and the corresponding sections and figures within the new
standard.
Adam Bromley
Kraig Bader
2 April 2013
5. CHANGES IN COMMERCIAL TERMS.
The Purchaser may make any changes to the terms, other than legal terms, including additions to or deletions
from the quantities originally ordered in the specifications or drawings, by verbal or written change order. If any
such change affects the amount due or the time of performance hereunder, an equitable adjustment shall be
made.
6. TERMINATIONS.
The Purchaser may at any time by written change order, terminate this agreement as to any or all portions of the
goods then not shipped, subject to any equitable adjustment between the parties as to any work or materials then
in progress provided that the Purchaser shall not be liable for any claims for anticipated profits on the
uncompleted portion of the goods and/or work, for incidental or consequential damages, and that no such
adjustment be made in favor of the Seller with respect to any goods which are the Sellers standard stock. No
such termination shall relieve the Purchaser or the Seller of any of their obligations as to any goods delivered
hereunder.
7. CLAIMS FOR ADJUSTMENT.
Any claim for adjustment must be asserted within thirty (30) days from the date the change or termination is
ordered.
8. COMPLIANCE WITH LAW.
The Seller warrants that all goods sold hereunder shall have been produced, sold, delivered and furnished in
strict compliance with all applicable laws and regulations to which the goods are subject. The Seller shall
execute and deliver such documents as may be required to effect or evidence compliance. All laws and
regulations required to be incorporated in agreements of this character are hereby incorporated herein by this
reference. The Seller agrees to indemnify and hold the Purchaser harmless from all costs and damages suffered
by the Purchaser as a result of the Sellers failure to comply with such law.
9. ASSIGNMENT.
Neither party shall assign, transfer, or convey this order, or any monies due or to become due hereunder without
the prior written consent of the other party.
10. TITLE.
The Seller warrants full, clear and unrestricted title to the Purchaser for all equipment, materials, and items
furnished in performance of this agreement, free and clear of any and all liens, restrictions, reservations,
security interest encumbrances and claims of others.
11. NONWAIVER.
Failure of the Purchaser to insist upon strict performance of the terms and conditions hereof, failure or delay to
exercise any rights or remedies provided herein or by law, failure to promptly notify the Seller in the event of a
breach, the acceptance of or payment for goods hereunder or approval of the design, shall not release the Seller
of any of the warranties or obligations of this purchase order and shall not be deemed a waiver of any right of
the purchaser to insist upon strict performance hereof or any of its rights or remedies as to any such goods,
regardless of when shipped, received or accepted, as to any prior or subsequent default hereunder, nor shall any
purported oral modification or rescission of this purchase order by the Purchaser operate as a waiver of any of
the terms hereof.
12. ASSIGNMENT OF ANTITRUST CLAIMS.
Seller and the Purchaser recognize that in actual economic practice, overcharges resulting from antitrust
violations are in fact borne by the Purchaser. Theretofore, for good cause and as consideration for executing this
purchase order, the Seller hereby assigns to the Purchaser any and all claims it may now have or hereafter
acquired under federal or state antitrust laws for such overcharges relating to the particular goods or services
purchased or acquired by the Purchaser pursuant to this purchase order.
13. PURCHASERS PERFORMANCE OF SELLERS OBLIGATIONS.
If the Purchaser directs the Seller to correct nonconforming or defective goods by a date to be agreed upon by
the Purchaser and the Seller, and the Seller thereafter indicates its inability or unwillingness to comply, the
Purchaser may cause the work to be performed by the most expeditious means available to it, and the Seller
shall pay all costs associated with such work.
The Seller shall release the Purchaser and its contractors of any tier from all liability and claims of any nature
resulting from the performance of such work.
This release shall apply even in the event of fault of negligence of the party released and shall extend to the
directors, officers and employees of such party.
The Seller's contractual obligations, including warranty, shall not be deemed to be reduced, in any way, because
such work is performed or caused to be performed by the Purchaser.
14. PATENTS.
Whenever the Seller is required to use any design, device, material or process covered by letter, patent,
trademark or copyright, the Seller shall indemnify and save harmless the Purchaser from any and all claims for
infringement by reason of the use of such patented design, device, material or process in connection with the
contract, and shall indemnify the Purchaser for any cost, expense or damage which it may be obliged to pay by
reason of such infringement at any time during the prosecution or after the completion of the work. In case said
equipment, or any part thereof or the intended use of the goods, is in such suit held to constitute infringement
and the use of said equipment or part is enjoined, the Seller shall, at its own expense and at its option, either
procure for the Purchaser the right to continue using said equipment or parts, replace the same with substantially
equal but non-infringing equipment, or modify it so it becomes non-infringing.
15. INSOLVENCY.
If the Seller shall become insolvent or bankrupt, make an assignment for the benefit of creditors, appoint a
receiver or trustee for any of the Sellers property or business, this order may forthwith be canceled by the
Purchaser without liability.
16. GOVERNING LAW.
The definitions of terms used or the interpretation of the agreement and the rights of all parties hereunder shall
be construed under and governed by the laws of the State of Colorado, USA.
The following Additional Conditions apply only in cases where the Seller is to perform work hereunder,
including the services of Sellers Representative(s), on the premises of others.
17. SELLERS RESPONSIBILITY.
The Seller shall carry on said work at Seller's own risk until the same is fully completed and accepted, and shall,
in case of any accident, destruction or injury to the work and/or materials before Seller's final completion and
acceptance, complete the work at Seller's own expense and to the satisfaction of the Purchaser. When materials
and equipment are furnished by others for installation or erection by the Seller, the Seller shall receive, unload,
store and handle same at the site and become responsible therefor as though such materials and/or equipment
were being furnished by the Seller under the order.
18. INSURANCE.
The Seller shall, at his own expense, provide for the payment of workers compensation, including occupational
disease benefits, to its employees employed on or in connection with the work covered by this purchase order,
and/or to their dependents in accordance with the laws of the state in which the work is to be done. The Seller
shall also carry comprehensive general liability including, but not limited to, contractual and automobile public
liability insurance with bodily injury and death limits of at least $300,000 for any one person, $500,000 for any
one accident and property damage limit per accident of $400,000. The Seller shall likewise require his
contractors, if any, to provide for such compensation and insurance. Before any of the Sellers or his contractors
employees shall do any work upon the premises of others, the Seller shall furnish the Purchaser with a
certificate that such compensation and insurance have been provided. Such certificates shall specify the date
when such compensation and insurance have been provided. Such certificates shall specify the date when such
compensation and insurance expires. The Seller agrees that such compensation and insurance shall be
maintained until after the entire work is completed and accepted.
19. PROTECTION AGAINST ACCIDENTS AND DAMAGES.
The Seller hereby assumes the entire responsibility and liability for any and all damage, loss or injury of any
kind or nature whatsoever to persons or property caused by or resulting from the execution of the work provided
for in this purchase order or in connection herewith. The Seller will indemnify and hold harmless the Purchaser
and any or all of the Purchasers officers, agents and employees from and against any and all claims, losses,
damages, charges or expenses, whether direct or indirect, and whether to persons or property to which the
Purchaser may be put or subject by reason of any act, action, neglect, omission or default on the part of the
Seller, any of his contractors, or any of the Sellers or contractors officersJanet agents or employees. In case any
suit or other proceedings shall be brought against the Purchaser, or its officers, agents or employees at any time
on account or by reason of any act, action, neglect, omission or default of the Seller of any of his contractors or
any of its or their officers, agents or employees as aforesaid, the Seller hereby agrees to assume the defense
thereof and to defend the same at the Sellers own expense, to pay any and all costs, charges, attorneys fees and
other expenses, any and all judgments that may be incurred by or obtained against the Purchaser or any of its or
their officers, agents or employees in such suits or other proceedings, and in case judgment or other lien be
placed upon or obtained against the property of the Purchaser, or said parties in or as a result of such suits or
other proceedings, the Seller will at once cause the same to be dissolved and discharged by giving bond or
otherwise. The Seller and his contractors shall take all safety precautions, furnish and install all guards
necessary for the prevention of accidents, comply with all laws and regulations with regard to safety including,
but without limitation, the Occupational Safety and Health Act of 1970 and all rules and regulations issued
pursuant thereto.
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