BID #POWER-031711-PDT
ADVERTISEMENT for SINGLE-PHASE POWER DISTRIBUTION
TRANSFORMERS
The City of College Park is accepting Sealed Bids from qualified vendors for “Single
Phase Overhead and Pad-Mounted Power Distribution Transformers”. Sealed bids
will be received no later than Thursday, March 17, 2011, at 2:00 pm at the City of
College Park Purchasing Department, 3667 Main Street, College Park Georgia, 30337 at
which time they will be opened and publicly read aloud. Bids received after the above
date and time, or in any other location other than the Purchasing Department will not be
considered.
A bid packet may be obtained from the City of College Park Purchasing Department,
3667 Main Street, College Park, Georgia 30337, or from www.collegeparkga.com.
The City of College Park reserves the right to reject any or all bids based on past
performance and to waive technicalities and informalities and re-advertise. All Minority,
Woman and Small Businesses are strongly encouraged to apply. Only responsive
proposals that are determined to meet the requirements and criteria set forth by the City
of College Park will be considered.
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CITY OF COLLEGE PARK
PURCHASING DEPARTMENT
“GENERAL INSTRUCTIONS TO BIDDER”
1. The following instructions are to be considered an integral part of this proposal.
Unless otherwise requested, only one copy of the bid form need be submitted and
this copy MUST BE TYPEWRITTEN OR PRINTED IN INK. The person signing the
bid form must initial any changes or corrections made to this proposal.
2. The person, firm or corporation making the proposal shall submit their bid in the
“YELLOW ENVELOPE” provided with this proposal. The envelope must be
complete with the vendor’s company name, bid title, bid number and bid date.
Should a larger envelope be required, the “YELLOW ENVELOPE” must be
attached to the OUTSIDE. No proposal may be withdrawn or modified in any way
after the bid-opening deadline. NOTE: BID DOCUMENTS DOWNLOADED FROM
THE COLLEGE PARK WEBSITE MAY USE THE ATTACHED MAILING LABEL
TO SUBMIT YOUR BID. SEE PAGE THREE (3) OF INSTRUCTIONS FOR LABEL.
Only one (1) copy of a proposal is required unless otherwise stated in the
documents.
3. If descriptive literature is attached to the bid, bidder’s name must appear on all
sheets.
4. If there is any question whatsoever regarding any portion of the instructions or
specifications, it shall be the bidder’s responsibility to seek clarification immediately
from the City of College Park Purchasing Department “No Later Than Five (5)
Workings Days Prior To The Opening Date” unless otherwise stated in the
documents. IT SHALL BE THE BIDDERS RESPONSIBILITY TO CHECK
THE CITY’S WEB SITE (www.collegeparkga.com) FOR ANY/ALL
ADDENDUMS. Answer(s) to all questions will be answered after the deadline
for questions has expired, and posted to the City’s web site, if applicable.
5. Any variation from the specifications must be clearly stated by the bidder in writing
and submitted with his/her proposal.
6. The apparent silence of the specifications and any supplement specifications as to
any details or the omission from it of a detailed description concerning any point shall
be regarded as meaning that only the best commercial practices are to prevail and
that only materials of first quality and correct type, size and design are to be used. All
workmanship is to be of first quality. All interpretations of this specification shall be
made upon the basis of this statement.
7.
Unit prices and extensions will be verified and total checked. Unit price extension
and net total must be shown. Unit price SHALL prevail.
8. Bids shall be evaluated on the following items but not necessary in this order:
A. Price
B. Delivery (If Applicable To Scope of Work)
C. Adherence to specifications
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D. Past record of vendors delivery/performance to the City Of College Park
Though delivery will be a large consideration, please be as candid and as accurate
with dates as possible.
9. The City desires delivery of the material or services specified at the earliest possible
time after the date of award. Unreasonable delivery proposal may be cause for
disqualifying a bid. Each bidder shall state a definite time and avoid using terms
“ASAP” or approximately so many days.
10. The bidder or contractor shall provide copies of Workers’ Compensation
Insurance with a limit of not less than required by the State of Georgia or otherwise
stated in the bid instructions. Copy of Commercial General Liability Insurance
shall be provided. (If Applicable)
11. All prices shall be for delivery, our destination, and F.O.B. freight prepaid and allows,
College Park, Georgia unless otherwise shown. (If Applicable)
12. No Federal or State Sales Tax is applicable. The Federal tax identification number is
586000542. The City is State tax-exempt under the code of Georgia, Charter 88-18.
13. Cash discounts or end of month terms should be shown separately, even if terms are
net.
14. The City of College Park reserves the right to accept or reject any and all bids, due to
past performance,etc. and waive any informality. The City will accept or reject all bids
within 90 days from the date of the bid opening.
THE UNDERSIGNED ON THE BID PROPOSAL CERTIFIES THAT HE/SHE HAS
CAREFULLY EXAMINED THE INSTRUCTIONS TO BIDDERS, TERMS AND
SPECIFICATIONS APPLICABLE TO AND MADE A PART OF THIS PROPOSAL.
HE/SHE FURTHER CERTIFIES THAT THE PRICES SHOWN IN THE SCHEDULE OF
ITEMS ON WHICH HE/SHE IS BIDDING, ARE IN ACCORDANCE WITH THE
CONDITIONS, TERMS AND SPECIFICATIONS OF THE PROPOSAL AND THAT ANY
EXECPTION TAKEN THERETO MAY DISQUALIFY THE BID.
SIGNATURE: ____________________________, DATE: _________________,
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CITY OF COLLEGE PARK
PURCHASING DEPARTMENT
REFERENCE: Bid No. POWER-031711-PDT
SHOW ALL EXCEPTIONS AND COMMENTS BELOW:
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SIGNATURE:________________________________DATE:________________
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City of College Park
Purchasing Department Vendor Questionnaire
The City of College Park Purchasing Department is seeking vendor information to create a database of current and
new businesses doing business with the City of College Park. W ask that all vendors take this time to provide the
following information so that we can update our records and develop a process to benefit the needs of the community.
The information collected from this questionnaire will not be used in the award of bids. The City will continue to utilize
a fair, equitable and impartial process and award bids based upon the lowest, responsible bidder.
_________________________________________________
Vendor Name
____________________________________
Vendor Type
____________________________________________________________________________________________
Vendor Address
_________________________________________________
City/State
____________________________________
Zip
__________________________________
Telephone Number
____________________________________
Alternate Telephone Number
A “Minority Business Enterprise” (MBE) is a business which is an independent and continuing operation for profit,
performing a commercially useful function which is owned and/or controlled by one or more minority group member.
“Owned” is a minority or female owner which possesses an ownership interest of a least 51 percent of the business.
“Controlled” is a minority or female which possess and exercise the legal authority and power to manage business
assets, good will and daily operations of the business and actively and continuously exercise such managerial authority
and power in determining the policies an directing the operations of the business.
VENDOR HAS INDICATED AS: (optional information)
________
________
________
________
________
________
African American Business Enterprise (AABE)
Hispanic Business Enterprise (HBE)
Female Business Enterprise (FBE)
Asian Business Enterprise (ABE)
Native American Business Enterprise (NABE)
Other:___________________________________________________
If yes, is the firm certified as such by any Federal, State or Local Governing authority? If so, please provide
appropriate documentation showing such certification.
___________________________________________________________
Signature ( of contact person with company)
________________________
Date
__________________________________________________________
Name (print)
________________________
Title
Thank you for your cooperation.
Return to: City of College Park Purchasing Department, P.O.Box 87137, College Park, Georgia 30337 or fax to
404/669.3799
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1886 Harvard Avenue
College Park, Georgia 30337
February 28, 2011
REQUEST FOR BID
The City of College Park Power Department is soliciting requests for Sealed Bid for
single-phase overhead and pad mount transformers as follows. Specifications T(A) – 10
and TPM are attached . Items that do not meet the attached specifications may be
considered ONLY IF deviations are noted and manufacturer’s specifications accompany
the bid response.
Upon receipt, all bids become the property of the City of College Park. College Park
reserves the right to reject any and all bids. Prices quoted must be valid a minimum of
thirty (30) days from the bid due date in order to be considered. Please direct any
questions to Steve Bryant at 404-669-3772. Bids will be accepted until 2:00 p.m. on
Thursday, March 17, 2011. Please see enclosed Bid Instructions.
BILL TO:
SHIP TO:
COLLEGE PARK POWER
1886 HARVARD AVENUE
COLLEGE PARK, GEORGIA 30337
COLLEGE PARK POWER
STORAGE FACILITY
1060 FOREST PARK WAY
Notes: College Park has no loading dock. Deliveries requiring assistance must be
shipped in open container or positioned for forklift off load. Failure to comply with
this requirement may result in shipment refusal. College Park will not be
responsible for additional shipping or handling charges if refused due to the above.
The “ship to” address is not manned and requires 24-hour ahead appointment or in route
delivery driver to call Samuel Martin at 404-669-3772 a minimum of one hour prior to
arrival. College Park will not accept shipment of the material or equipment from this bid at
any location other than the “SHIP TO” address.
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Technical Specification for
Aerial Distribution Transformers
Specification T (A) – 10
COLLEGE PARK POWER
1886 West Harvard Avenue
College Park, GA 30337
Phone: (404) 669-3772
Fax: (404) 669-3798
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TABLE OF CONTENTS
SECTION
PAGE
............ ............. ..............10
1.0
Scope and Application
2.0
Compliance with Standards....... ............. ............. ..............10
3.0
Ratings.......... ............................ ............. ............. ..............10
4.0
Design and Construction............ .......... ... ..............10, 11, 12
5.0
Quality Assurance...................... ............. ............. .............12
6.0
Certified Test Reports and Data Required............. ..............12
7.0
Bid Evaluation and Award......... ............. ............. ..... 12, 13
8.0
Penalty for Non-Conforming Transformers........... ..............13
9.0
Packaging and Shipping............. ............. ............. ..............13
10.0
Warranty........ ............................ ............. ............. .......13, 14
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TECHNICAL SPECIFICATION FOR
AERIAL DISTRIBUTION TRANSFORMERS
1.0 SCOPE AND APPLICATION
This specification is applicable for the mechanical and electrical requirements for single phase
overhead type,
60 Hertz, mineral-oil filled, self cooled distribution transformers, in various kVA ratings for use on an
overhead electric distribution system.
2.0 COMPLIANCE WITH STANDARDS
All transformers shall be designed, manufactured and tested to meet all the requirements specified
within the latest revision of the following documents. In the event that any of the referenced standards
are shown to be contradictory, then the more stringent standard shall apply.
ANSI C57.12.00 "General Requirements for Liquid-Immersed Distribution, Power and Regulating
Transformers."
ANSI C57.12.20 "Standard Requirements for Overhead-Type Distribution Transformers, 500 kVA and
Smaller: High-Voltage, 34500 Volts and Below; Low Voltage, 7970/13800 Y Volts and Below."
ANSI Z55.1 "Standard Gray Finishes for Industrial Apparatus and Equipment."
3.0
3.1
RATINGS
All ratings shall be based on not exceeding a 65°C. winding temperature rise. The high voltage
basic impulse insulation level (BIL) shall be 95 kV.
3.2
High Voltage: 7200/12470 Y.
3.3
Low Voltage: 120/240, 240/480, 277 as requested for quotation.
3.4
Size (kVA): 5, 10, 15, 25, 37.5, 50, 75, 100, 167, 250, 333, 500 as requested for quotation.
4.0
DESIGN AND CONSTRUCTION
4.1
Transformers shall be constructed in accordance with ANSI C57.12.20, latest revision, unless
exception is taken by this specification. Transformers shall be Class OA and shall have a sealedtank oil preservation system.
4.2
All units, 50 kVA and smaller, shall have interlaced secondary design or an approved secondary
surge protective device. Vendors shall submit surge protective device schemes for approval by
College Park Power, Engineering Division, Electric Standards Section prior to quotation.
4.3
Tank Construction, Accessories and Finish
4.3.1
4.3.2
The transformer tank shall be of all welded steel construction, which when fully
assembled shall form an oil-tight sealed unit. The tank cover shall be constructed of
400CB, 409 or 304L stainless steel and shall be grounded to the tank by an external strap.
Cover band may be galvanized or stainless steel.
The transformer shall remain effectively sealed for a top oil temperature range of -5°C.
to+105°C.
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4.3.3
4.3.4
4.3.5
4.3.6
4.3.7
4.3.8
4.4
Bushings
4.4.1
4.4.2
4.4.3
4.4.4
4.4.5
4.5
Transformers shall be equipped for single position pole or platform mounting. Mounting
hardware shall be constructed and positioned in accordance with ANSI C57.12.20, latest
revision.
Lifting lugs shall be provided to allow the safe handling and lifting of the complete
transformer unit when filled with insulating fluid.
All exterior bolts, nuts, clamps and other non-painted metallic hardware shall be of a noncorrosive material.
The transformer tank shall have provisions to support the installation of an external
lightning or surge arrestor near the high voltage bushing.
The tank finish shall be of high grade paints employing a controlled baking process that
will insure a protective coating in accordance with the requirements of ANSI C57.12.28,
paragraph 5, "Enclosure Coating System." The color shall be Light Gray, No. 70,
Munsell Notation 5BG 7.0/0.4. Paint thickness on all exterior surfaces shall be a
minimum of 2.5 mils. Interior tank coating shall be white or similar light color to enhance
visibility during repair and maintenance.
The transformer kVA rating shall be clearly and permanently marked in black Arabic
numerals 2-1/2" high on the front of the tank six (6) inches below the secondary
bushings.
The transformer shall have two cover mounted porcelain high voltage bushings. The high
voltage bushings shall have electrical characteristics as required in paragraph 6.1.1.1 and
listed in Table 6 of ANSI C57.12.20 latest revision, for the 95 kV BIL insulation class.
The bushing mounting holes in the cover shall be 2.313" diameter. The bushings shall be
field removable and fully replaceable with internally clamped bushing wells. For
transformers 50 kVA andsmaller, field replacement will be with Central Moloney
Components catalog Number 702121-64 (7-3/4" shaft length). For transformers 75 kVA
and larger, field replacement will be with Central Moloney Components catalog Number
702131-64 (10" shaft length).
The low voltage bushings shall have electrical characteristics in accordance with ANSI
C57.12.20,
latest revision. Low voltage bushings shall be of the side wall type and mounted singly.
Low voltage bushings shall be constructed of porcelain or epoxy and fitted with a proper
gasket.
The number, location and arrangement of bushings shall be as shown in Tables 7 and 9
and Figure 3 of ANSI C57.12.20, latest revision.
The color of all bushings shall match Light Gray No. 70, Munsell Notation 5BG 7.0/0.4.
Dielectric Oil
4.5.1
4.5.2
Transformers shall be furnished complete with oil of a non-PCB type which fully
complies with Federal Regulation 40 CFR 761 (May 31, 1979) and most recent published
update. A blue decal (approximately 2-1/2" x 3-1/2") with white letters shall be placed on
the tank near the nameplate. The wording shall be "Filled with Non-PCB mineral oil" or
"Filled with Non-PCB mineral oil at time of manufacture.” The transformer nameplate
shall contain the appropriate PCB wording as well.
The vendor shall certify that the liquid dielectric or any component of the liquid dielectric
is not listed in the Federal Register, Vol. 45, No. 98, issued May 19, 1980, 40FR, Part
461, Appendix VIII, Subpart D- Identification and Listing of Hazardous Waste.
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4.6
Impedance
The percent impedance (%IZ) as measured at rated voltage shall be as follows. Any exceptions
shall be noted at time of bid.
kVA Rating
10 – 75
100 – 167
250 – 500
4.7
Max. %IZ
3.0
3.0
3.0
Min. %IZ
1.5
1.6
1.6
Pressure Relief
The transformer shall be equipped with a replaceable pressure relief valve that complies with the
requirements of ANSI C57.12.20, Section 6.2.5 latest revision, including the following:
4.7.1
4.7.2
4.7.3
4.7.4
The body of the valve shall be brass, bronze or stainless steel.
The venting port, on outward side of valve head seat, shall be protected to prevent entry
of dust, moisture and insects before and after valve has actuated.
The device shall not have an indicating "pop-off" cover.
The device shall have a pull ring for manual or hot stick activation.
Note:
Transformers with an approved cover assembly designed to relieve excess pressure in the
transformer tank at a minimum of 8 psig and reseal shall be exempt from the requirement of an
auxiliary pressure relief device.
5.0
QUALITY ASSURANCE
Transformers shall be tested in accordance with Paragraph 8 of ANSI C57.12.20, latest revision.
Also, the impulse test as specified in ANSI C57.12.00, Section 5.10.7 shall be made on all
transformers.
6.0
CERTIFIED TEST REPORTS AND DATA REQUIRED
6.1
The vendor shall provide, upon request as part of the bid, an outline drawing showing physical
dimensions, total transformer weight, location of accessories and nameplate and connection
diagram.
The vendor shall provide, upon request as part of the bid, a certified test report for all transformers
in a given order, indicating the actual loss data for each unit delivered. Within 30 days of
transformer shipment, the certified test reports shall be mailed directly to:
6.2
Director
College Park Power
1886 Harvard Avenue
College Park, GA 30337
7.0
BID EVALUATION AND AWARD
7.1
The vendor shall state all exceptions to this specification. If no exceptions are taken, vendor shall
so state.
7.2
All bids received will be evaluated and the Equivalent First Cost (EFC) computed. Award will be
based on the lowest calculated EFC for each specific kVA, type and voltage category. The method
used to determine the EFC is documented in A Method for Economic Evaluation of Distribution
Transformers, published by the Edison Electric Institute, April 1981.
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7.3
The Equivalent First Cost (EFC) shall be determined with the following formula:
EFC ($) = [4.81 x NLL (watts)] + [2.10 x LL (watts)] + Purchase Price
where: NLL= No Load (core) Losses, and LL = Load (winding) Losses.
7.4
All bidders shall supply No Load, Load and Total losses. No load losses shall be reported at 20°C.
The value for load losses shall be corrected to 85°C.
7.5
Quoted losses shall be the guaranteed average of all transformers in a specific order of a given size
and type. The losses of an individual unit in the shipment shall not exceed the tolerances specified
in Table 19, ANSI C57.12.00 - 10% No Load, 6% Total Load. Units exceeding these limits shall
not be shipped to College Park Power. If any such unit is found to have been shipped, College
Park Power will request full credit based upon the purchase price of the unit.
8.0
PENALTY FOR NON-CONFORMING TRANSFORMERS
8.1
Should any transformer fail to conform to the specifications in any way, then, at the option of
College Park Power, the vendor shall replace the non-conforming transformer with a suitable
transformer and bear all associated costs; or have the initial bid price reduced by a penalty charge
calculated in accordance with Section 8.2 below.
8.2
Calculation of the penalty charge in dollars per unit shall be the "Equivalent First Cost of Actual
Losses" less the "Equivalent First Cost of Quoted Losses."
8.3
In the event that the transformers in a given order do not exceed the average losses as quoted, but
any individual transformer exceeds the tolerances as specified in Section 7.5, then the penalty
charge shall be deducted from the bid price of that unit.
8.4
In the event the actual average losses for a given transformer order exceed the quoted average
losses, then the penalty charge shall be calculated in accordance with Section 8.2 based on the
difference of the actual average losses and the quoted average losses. The penalty shall then be
deducted from each unit in the order.
8.5
In no case will the penalty charge exceed the bid price of the non-conforming unit.
9.0
PACKAGING AND SHIPPING
Each transformer shall be fastened to skids or to a two-way entry, disposable pallet of the vendor's
own design. This pallet must be of such dimension as to provide two inch (2") clearance of the
transformer at its widest outside measurements, on all four sides. Skids or pallet must provide a
minimum of 2-1/4 inches of fork under-clearance. Transformers shall be delivered on a flatbed
truck or otherwise open carriage. A minimum 24-hour prior notice of shipment is required.
Shipment in an enclosed body or no 24-hour notice may result in refusal of the shipment.
10.0
WARRANTY
10.1
The vendor shall guarantee the transformers for a minimum period of 18 months from shipment
or 12 months from installation that all equipment covered by this agreement is to be free from
defects in material and workmanship. Any defective units discovered or identified during this
period shall be replaced or repaired by the vendor at no cost to College Park Power. Vendors are
encouraged to provide extended warranties for the entire transformer or for specific parts and/or
performance (i.e., additional warranty on paint finish.)
10.2
Any material repaired or replaced under the terms of the above guarantee shall itself be covered
by those terms as if it were a new product.
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10.3
The vendor shall state the expected service life and failure mode of the product in its intended
application. This should also include documentation explaining how expected service life was
determined.
10.4
Any transformers that fail after the warranty, but before the expected service life, may be
subjected to an engineering failure analysis to determine the cause of failure. This analysis will be
performed by the vendor and College Park Power engineers. The vendor shall, if requested, supply
the required resources for the analysis at no cost to the Power Director, College Park Power.
14
Technical Specification for
Single Phase Dead Front Loop Feed
Pad Mounted Distribution Transformers
Specification TPM – 10
COLLEGE PARK POWER
1886 Harvard Avenue
College Park, GA 30337
Telephone: (404) 669-3772
Fax: (404) 669-3798
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COLLEGE PARK POWER
SINGLE PHASE PAD MOUNT TRANSFORMERS
This specification provides standardization of physical and electrical requirements for
single-phase self-cooled, oil-immersed pad mounted transformers designed for
underground distribution systems.
I.
General Information
A.
Provisions and terminology of current revisions of American National
Standards Institute Standards C57.12.00, 12.10, 12.20, 12.22, 12.26,
12.70, 12.80, 12.90 apply.
B.
Winding temperature rise above ambient shall not exceed 65° C at rated
capacity.
C.
"Dead front", loop feed design shall be employed, unless otherwise
specified.
II.
Construction Features
A.
A sealed tank system is required
B.
Tank shall be welded steel construction (13-gauge minimum) with a
removable flip-top door for front cabinet access to bushings, etc. Door
shall be attached with stainless steel hinges with a minimum pin diameter
of 3/8”. The cabinet and tank shall form a tamper resistant unit, preventing
the insertion of foreign objects when closed. Recessed front penta-head
bolt and pad lock provisions are required.
C.
Lifting and rolling provisions are required.
D.
Physical size limitations apply as follows.
E.
F.
G.
III.
- Length (front): minimum not less than 30” or more than 36”
- Width (side): not more than 42”
- Height: not more than 28” up to 100 kVA; nor more than 32”
for 167 kVA and above
The high voltage neutral winding shall be internally grounded.
A 5-inch (+ / - 1/12”) sill is required, the front of which shall not be
covered by the door.
Provision for Fault Indicator is NOT required unless otherwise specified.
Electrical Characteristics
A.
Unless otherwise specified, the primary voltage shall be 12.47kV GRDY /
7.2kV. Secondary voltage shall be 240/120v. All voltages are 60 hertz.
B.
Primary insulation class is 15 kV (95 kV BIL). Secondary insulation class
is 1.2 kV (30 BIL).
C.
Taps are not required unless otherwise specified.
16
D.
Allowable percent impedance shall be between 1.5% and 3.0%.
IV.
Bushings and Terminals
A.
Two high voltage, externally clamped bushing wells for looped primary
systems are required. Two 200 amp screw-out load-break inserts designed
to mate with G.E. “Sure Make”, RTE “SBT”, or Elastimold are required.
B.
Low-voltage and neutral terminals shall be epoxy-filled externally
clamped with threaded studs ( 5/8”-11, minimum length 1 ¼” for 25kVA
thru 75kVA; 1” 14, minimum length 1 ¾” for 1000 kVA and larger). 6hole spades are to be provided unless otherwise specified.
C.
The neutral connection of the low-voltage winding shall be brought out
on insulated bushings and grounded to the ground connection in the lowvoltage compartment with a removable ground strap.
D.
Terminal marking shall be per ANSI C57.12.70.
V.
Required Features
A.
Tank grounding provision
B.
Accessory / parking stand
C.
Oil level gauge and oil filler plug
D.
Pressure relief device
E.
Bayonet-type fuse holder for oil immersed, dual element expulsion fuse.
If located above a high-voltage bushing, a drip shield is required.
F.
Provide fuses as listed in Table A.
G.
Corrosion-proof nameplate per ANSI C57.12.25.
H.
Non-PCB oil, the type of which shall be noted on the nameplate.
.
VI.
Testing
A.
Routine tests on all transformers shall be as specified in Section 8 of the ANSI
C57.12.00 latest revision thereof. ANSI Test Code C57.12.90 shall be
followed for all testing procedures.
B.
Loss evaluation tests shall be performed on all transformers and cost of ownership
shall be determined based on a formula provided by the City. Certified test
results shall be provided to the City.
The Total Ownership Cost (TOC) shall be determined with the following formula:
EFC ($) = [4.81 x NLL (watts)] + [2.10 x LL (watts)] + Purchase Price
where: NLL= No Load (core) Losses, and LL = Load (winding) Losses.
C.
D.
Dielectric test shall be in accordance with ANSI Standard C57.12.26.
Doors shall be opened and closed several times before manufacturer
delivers unit, checking for misalignment, warping, improper hinging, etc.
17
Miscellaneous
A.
Transformers shall be furnished with grounding lugs.
B.
All exterior nuts and bolts shall be stainless steel.
C.
The liquid supplied in these transformers shall be a non-PCB type as
defined by Federal Regulation # 40CFR 761, dated May 31, 1979 and
subsequent revisions. The liquid contained in these transformers shall be
identified as a non-PCB type on the nameplate on the transformer and on a
separate label, no larger than 3" x 5", affixed to the transformer tank in the
immediate vicinity of the nameplate. Should any other oil be identified as
a hazardous substance, it shall not be used.
D.
Transformers shall be delivered on a flatbed truck or otherwise open
carriage. A minimum 24-hour prior notice of shipment is required.
Shipment in an enclosed body or no 24-hour notice may result in refusal
of the shipment. College Park will not be responsible for any additional
shipping charges.
E.
A corrosion preventive undercoating shall be applied to all surfaces that
are in contact with the pad and shall include the lower 4" of the tank or
cabinet walls and base sill. Paint shall be of such quality as to resist rust,
fading, etc., for a minimum 15-year (exposed to the elements) period.
Color shall be Munsell 7GY, Outdoor Green.
F.
The transformer(s) shall be assembled in the United States from
components the majority of which are domestically produced.
G.
NEMA standard 9-15-1982 Figure 1 and Figure 2 safety labels shall be
provided.
H.
Information on the instruction nameplate shall comply with ANSI
Standard C57.12.07 and shall include the date of manufacture and type of
oil utilized.
I.
All regulations, codes and standards referred to in this document, such as
ANSI, NEMA, CFR, and others, are meant as minimum reference points.
Any subsequent updates in effect at the time of the request for quote
should be used in the construction of the units requested. Failure to
comply will be cause for rejection of the bid or the unit(s) if it is
determined they do not meet these minimum requirements.
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TABLE A
PRIMARY FUSING FOR
PAD MOUNTED TRANSFORMERS
USING BAYONET FUSES
Single Phase
kVA
25
37.5
50
75
100
Fuse (amps)
5
8
12
15
25
Three Phase
kVA
75
112.5
150
225
300
500
750
1000
1500
Fuses (amps)
5
8
12
15
25
30
35
All pad-mounted transformers ordered by the City of College Park Electrical Department
shall be equipped with the above fuses.
All 1500 kVA transformers shall be clearly labeled "DO NOT OPERATE FUSES
UNDER LOAD" or similar adjacent to the bayonet fuses.
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BID DATE: MARCH 17, 2011, 2:00 PM
CITY OF COLLEGE PARK CITY HALL COMPLEX
FROM:______________________________________
Company Name)
________________________________________
(Address)
________________________________________________________________
(City and State)
________________________________________________________________
(Phone number)
____________________________________________
(Signature)
QTY
4
8
6
6
DESCRIPTION
Manufacturer
______________
(Date)
Unit
Price
Total
Delivery
15 KVA 1 Phase, Aerial
Transformer(s)
120/240V SEC., 7.2kV
Specification T(A) – 10 Attached
25 KVA 1 Phase, Aerial
Transformer(s)
120/240V SEC., 7.2kV
Specification T(A) – 10 Attached
37.5 KVA 1 Phase, Aerial
Transformer(s)
120/240V SEC., 7.2kV
Specification T(A) – 10 Attached
25 KVA 1 Phase, Pad Mount
Transformer(s)
120/240V SEC., 7.2kV
Specification TPM – 10 Attached
20