7428 RFP - TECHNICAL SPECIFICATIONS - Protective Relay PanelsPage 1 of 9
Denton Municipal Electric
City of Denton, Texas
Technical Specification
For Purchase of:
PROTECTIVE RELAY PANELS FOR THE BRINKER SUBSTATION
RFP 7428
I. PURPOSE
The purpose of this specification is to provide information necessary to allow prospective suppliers
to prepare proposals to furnish fully assembled indoor type, open-back relay and control panels and
deliver them to the Denton Municipal Electric (DME) Brinker Substation. DME is an electric
utility owned by the City of Denton, Texas.
The supplier will be required to fabricate, completely assemble and wire the panels, and deliver
them FOB to the substation sites. The panels will be installed inside climate controlled buildings in
each station. DME will provide labor and equipment for unloading at the site, field assembly, and
installation.
The owner will provide and deliver all Schweitzer Engineering Laboratories (SEL) relays and other
SEL devices to the supplier. The supplier will be required to provide the steel panels and all
devices and hardware other than the SEL items. DME has utilized specific manufacturer’s
equipment in designs; therefore, only proposals for the specified manufacturers and catalog items
will be accepted where noted. Deviations from these specified items must be approved by the
owner.
Designed drawings for the relay panels have been provided. Fabrication of the panels shall be in
accordance with this specification which includes design and fabrication drawings. Any fabrication
drawing errors discovered shall be promptly reported via this solicitation’s IONWAVE page
(Questions tab) only. Calling or emailing DME staff or Purchasing staff directly may result
in disqualification.
Award, if any, will be based on the evaluated price and delivery of typical panels using the
quantities shown on the pricing sheet. The unit price of each type of panel will include the steel,
equipment and hardware specified (excluding that provided by the owner), painting, assembly,
wiring and testing of each equipment item, plus freight for delivery to the designated locations in
and near Denton, Texas. The City of Denton reserves the right to award by line item or section.
Technical questions, drawings, and transmittals shall be submitted via this solicitation’s IONWAVE
page (Questions tab) only:
II. SERVICE CONDITIONS
A. Site Location:
Brinker Substation at 1954 Shady Oaks, Denton, Texas 76205.
B. Service Elevation:
Approximately 640 feet above sea level.
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C. Temperature:
-20o F to 120o F.
D. Other Considerations:
Moderately humid climate with 20 to 40 inches of rain per year; wind up to 90 mph;
thunderstorms with severe lightning occurring in all months of the year with the greatest
frequency during the warmer months.
The panels will be installed in climate controlled buildings.
III. PROPOSAL ADDITIONAL INFORMATION
A. Agreement and Submission Conditions: In submitting a proposal, the supplier understands
that:
1. No guarantee for any order is given nor intended by this specification.
2. Any purchase agreement, if awarded, shall be based on unit pricing for all of the standard
panels shown and each equipment item to provide complete relay panels as specified in
construction drawings.
B. Freight Charges:
All relay panels and any other material shall be shipped FOB destination to Denton, Texas, to
addresses to be specified by the owner, with freight prepaid and allowed as a part of the bid
price. No separate freight charges will be accepted.
C. Evaluation and Award:
Evaluation and award shall be in accordance with the information in the RFP document.
Delivery time will be a significant factor in evaluating proposals.
D. Exceptions:
Any deviation from this specification must be noted in writing with the proposal. Alternate
proposals will be considered only at the owner's discretion.
Where deviations are noted, the City reserves the right to accept a proposal containing such
deviations provided that, in the sole opinion of the City, the deviation or deviations do not affect
the overall capability of the item bid to perform the function for which it is so intended.
IV. TECHNICAL TERMS AND CONDITIONS
A. Definitions:
1. The terms “owner”, “utility”, “purchaser”, “Denton Municipal Electric”, “DME”, “City of
Denton”, or “City” as used herein shall designate the City of Denton, Texas dba Denton
Municipal Electric.
2. The terms “bidder”, “vendor”, “supplier”, “seller”, “distributor”, “representative”,
“contractor”, or “manufacturer” shall designate anyone submitting a proposal; and,
subsequently, anyone to whom the contract is awarded.
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3. The term “engineer” shall be understood to refer to Denton Municipal Electric or its
designated representative, hereafter referred to as DME.
B. Omissions or Errors:
It is the intent of this specification to require the successful vendor to provide properly
constructed, fully documented, complete, and fully functional relay panels that provide the
performance and features as described herein. Further it is the intent of this specification to
require that the relay panels be fabricated, as a minimum, in accordance with all US standards
that apply to substation relay panel manufacture and testing. Omission of any minor details
from this specification, minor mistakes or typographical errors in text, or mistakes in attempting
to reference standards or data in the standards shall not relieve the supplier from the
responsibility to furnish all material or equipment necessary to make the relay panels fully
functional as described and intended herein.
Every effort has been made to insure the accuracy and correctness of all drawings. It shall be
the responsibility of the supplier to verify correctness and accuracy of drawings as a part of the
proposal price. The owner will resolve problems brought to his attention, and revised drawings
will be issued. If any such change affects the amount due or the time of performance hereunder,
an equitable adjustment shall be made.
C. Design Changes:
The owner may, by written change order, make any changes, including additions or omissions in
quantities ordered, or in the specification or drawings. If any such change affects the amount
due or the time of performance hereunder, an equitable adjustment shall be made.
D. Cancellation:
The City reserves the right to cancel the purchase of relay panels at any point prior to the start
of the fabrication process. If the City awards the substation relay panels bid and subsequently
must cancel the purchase, the City will reimburse the manufacturer for actual documented costs
incurred up to the date of cancellation. These costs would typically include engineering,
material handling, storage and price of materials that cannot be reused. All material that cannot
be reused shall become the property of and be delivered to the City of Denton.
E. Warranty and Guarantee:
The supplier shall guarantee that the material furnished shall be free from all defects in design,
materials, workmanship, and shall give successful service under the intended operating
conditions. The supplier shall also agree upon notice from the owner to promptly and without
charge, and to the satisfaction of the owner, make such changes, replacements, corrections, etc.,
which may be required to make good all defects in design, materials, or performance developing
in the material or equipment under its intended use with proper care for a minimum period of
18 months following delivery or 12 months from the date the relay panels are placed in
operation, whichever occurs first.
The manufacturer shall respond to all issues within three days of being notified when DME or
its contractor discovers fabrication errors. The owner will correct minor wiring errors at no
charge provided that the aggregate total man-hours for all corrections for the entire order does
not exceed eight (8) hours. If more than eight (8) man-hours are required to correct
manufacturing defects, and the manufacturer elects to have the owner perform the corrections,
the manufacturer will be billed at the rate of $65.00 per hour.
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In the event that the supplier is required to correct any defect or defects or failure of compliance
by providing repair, replacement, or correction as herein above provided, then with respect to
the apparatus corrected, the aforesaid warranty period shall run for one year from the date of
completion of the installation of such correction and acceptance thereof, provided same is not
unreasonably delayed by the owner.
F. New Materials and Workmanship:
Only new materials shall be used in fabrication of the relay panels. Damaged or defective
materials shall not be repaired and reused.
G. Substitutions:
Any material or device substitutions from what is required in this specification shall be
approved by the owner.
H. Manufacturing Inspection:
The owner shall have the right to inspect the work on, and materials for, the relay panels at all
reasonable times. Such inspections shall be at no additional cost to the owner. Inspections,
with or without comment, shall not relieve the supplier of the requirement for conformance to
the specification nor shall they be construed as acceptance of work not in accordance with the
intent of this specification.
I. Shipment and Delivery:
1. Delivery method and location:
Relay panels and any miscellaneous hardware purchased under this agreement shall be
shipped by enclosed truck to the delivery location specified by DME. Proposals for rail
shipment will not be accepted. All shipment shall be FOB to the destination in Denton,
Texas with freight prepaid and allowed.
Small packages that must be shipped via UPS shall be sent to: Mark Zimmerer, 1671
Spencer Road, Denton, Texas 76205
2. Shipments:
It is desired that all panels be delivered in one shipment.
This single shipment arrangement is not a requirement, but is intended to accommodate
owner installation of panels into the control building. The proposal shall state if a different
shipping schedule is proposed.
All accessory items shipped with the relay panels shall be in boxes or crates and shall be
marked so that they can be matched to items on the shipping list and/or the material list.
The contents of the boxes and crates shall also be indicated.
3. Notice of factory shipments:
The owner will furnish labor and equipment for unloading all items required by this
specification. Because of the size of the relay panels, coordination and equipment will be
necessary for unloading.
The supplier shall provide notices 5 days prior to the expected shipping date and on the
actual shipping date. The truck driver or manufacturer shall provide notice on a
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normal City of Denton workday at least 24 hours prior to expected delivery. Contact
Sam Bridges at (940) 390-6279 for notices of shipment. Secondary contact is Brian
Walding at (940) 390-3146.
Any delays that result from failure of the driver to provide the required advance notice will
be the responsibility of the supplier. Messages can be left 24 hours a day with the DME
Operations Center dispatcher at 940-349-7000; however, leaving a message after normal
work hours or on a weekend or a City of Denton holiday shall not constitute proper delivery
notice.
Delivery of the relay panels will be accepted only between the hours of 8:30 am and
2:00 pm, Monday through Friday, excluding holidays. The base proposal shall include
the cost for the delivery truck to wait until DME unloads the relay panels and any other
hardware shipped with the panels.
The supplier shall provide a detailed shipping list to the owner at least two days prior to the
arrival of any shipments. This shipping list shall indicate which panels are to be received
and a listing of any other boxes that are included with the shipment.
4. Assembly:
Relay panels shall be shipped to the site completely factory assembled and wired except for
the interconnections for the ground bus and the vertical wire way covers that will be
attached between adjacent panels after they are installed.
Crates shall have markings on their exterior to identify which panel is inside.
5. Damaged or defective material or equipment:
Freight that is obviously damaged on arrival will be refused. Any necessary action
regarding replacement of materials or equipment delivered in unacceptable condition shall
be the responsibility of the supplier, including concealed freight damage. The supplier shall
be fully responsible for all action necessary for replacement or repair of such damage in a
timely manner.
6. Protection of shipped equipment and material:
All equipment shall be boxed, crated, or otherwise suitably protected during shipment,
handling, and storage. The supplier, at his expense, shall repair surfaces, which are
damaged during shipping.
K. Drawing and Document Identifications:
All correspondence, shipping notices, drawings, specifications, engineering data, invoices, and
other documents pertaining to the equipment and materials furnished under these specifications
shall be identified by the owner’s name (Denton Municipal Electric), the station name, and the
date.
L. Project Drawing Development
The only drawings that should be required of the manufacturer are the mechanical drawings for
the panels. All other drawings have been prepared by the owner. Should panel arrangements
have to be changed to accommodate the manufacturer’s standard panel mechanical practices,
the manufacturer shall be responsible for updating the bill of material drawings. Drawings that
present the owner’s required panel arrangements, wiring diagrams, and typical panel features
are included. The owner will furnish AutoCAD files of these drawings to the successful vendor
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that may be used in preparing the final project drawings if requested. The supplier shall provide
the final project assembly drawings that completely describe panel dimensions, features,
hardware mountings, cutout sizes, drilling, bracing, wall attachment details, and any other items
that may be appropriate in assuring a complete package.
M. Approval of Drawings, Equipment, and Material:
The owner shall have the right of approval of drawings, metal thickness, layout, hardware
selection, stabilizing hardware and method, and material selection, including the specific
terminals and associated hardware. Email approval drawings are preferred.
Review of the submittal by the owner will be with respect to general layout, functionality, and
conformance to the specification. Such review shall not be construed to relieve the supplier
from any responsibility or liability for proper arrangement, fabrication, and compliance with the
specifications or for any errors that may be contained in the drawings or information. After the
approval process, the owner must approve, in writing, any changes in layout, material, or
equipment.
N. As Built Drawings:
No later than scheduled date for delivery of panels, the supplier shall furnish “as-built”
drawings, indicating any modifications made during construction, and any instruction books.
Emailed in pdf format is preferred.
V. REQUIREMENTS AND TECHNICAL SPECIFICATIONS
A. Panel Features
1. The intent of this specification is to secure for the owner a panel design that adheres as
closely as possible to the design standards set forth in this specification and the
accompanying mechanical drawings. The proposal shall include a mechanical drawing of a
typical panel of the type that is being proposed. The owner shall approve the final
mechanical and physical arrangements for all panels.
2. Only manufacturers and part numbers specified on the owner’s bill of material drawings
will be used. These will include:
Electroswitch control switches and lockout relays
Concentric 12 terminal blocks (except for CT shorting blocks)
States and ABB test switches
INCON LTC position indicators
ABB LED type push-to-test panel lights
Gould fuses and fuse blocks
3. Relay and switch locations may not be varied by more than ½ inch and then only to allow
for panel braces or structural members. The final arrangement shall be approved by the
owner. The manufacturer shall point out all deviations.
4. Panels shall be constructed with the fronts designed as a 23” equipment mounting rack. All
relays and devices shall be mounted in 23” panel blanks as indicated on the drawings and
attached to panels.
5. All relays provided by the owner will be panel mount, not rack mount.
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6. Panel height shall be 90 inches, width shall be 32 inches, and depths shall be approximately
23 inches (or 19 inches in some cases). Panels are to be open at the back. Panel faces must
be made of no lighter material than 12 gauge steel. Panel fronts must be flat such that all
relays and other equipment mount flush around their entire perimeters. Panels must be
square such that when they are bolted together, sides of adjoining panels are flush against
each other along the entire joint and no gaps result along the floor line when all panels are
bolted together. A means must be provided to allow the sides of adjacent panels to be
bolted together in at least three locations near the front in the vertical structural members.
7. The panels shall be mounted on a 1-5/8 inch high base channel to prevent corrosion of the
bottom of the panel.
8. The panels shall have all surfaces cleaned, primed, and painted prior to mounting of any
items on the panels. The finish shall be smooth and free of any contamination or
irregularities of any kind. The color shall be ANSI 61 gray with a semigloss finish. The
owner shall approve the color.
9. Panduit, or similar wireway, shall be used to reasonably enclose exposed wiring within the
panel. Tied bundles are not acceptable.
10. Ring terminal compression type terminals shall be used to terminate all panel wiring. Gray,
switchboard type, STS, minimum 14 gauge wire shall be used for all control wiring,
minimum 12 gauge wiring for CT circuits.
11. A minimum ¼” thick by 1” tall copper grounding bus shall be installed across the entire
width at the bottom of each relay panel. The bus bar shall be drilled and tapped for 10x32
screws in at least twelve places on 1” centers. No less than three spare 10x32 spare
grounding points shall be provided in each panel ground. A means shall be provided to
interconnect all the ground busses in all the panels and to attach a 4/0 station ground in at
least two locations (one near each end of each lineup section). The drawings include a
building layout to assist in providing the appropriate ground connections. Connections for
future panels shall be included in this order.
12. All relay panels shall be labeled with plastic nameplates as indicated on the bill of material
drawing for each panel. Nameplates are required for the panel and for each device. Front
nameplates shall be mounted using screws at the ends of each nameplate. Tapped holes
shall be used for screws in the front panel. Labeling shall be provided on the back of all
panels to indicate the wiring diagram designation for each device. Rear nameplates shall be
adhesively applied when they must be affixed to the front plates of the panels. All fuses
shall be labeled.
13. Provide appropriate top entrances for external wiring. All external wiring will enter each
relay panel from a wireway located above the lineup of relay panels.
14. Panels shall include holes or other means for securing the tops of the panels to Unistrut
braces attached to the wall behind the panels. At least one brace is required at the ends of
each lineup and approximately every 64 inches in between. Each panel shall have at least
three brace attachment points to allow for conflicts with existing wall mounted equipment.
The attachment points on the panels for the brace shall place the wall brace flush with the
top of the panel so as not to interfere with the cable tray located above the panels or with
the panel wireway entrances. Galvanized Unistrut will be used for wall braces. The owner
will provide the Unistrut material to attach to the building walls.
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15. Provide appropriate rubber grommets or other protection at all metal wireway holes and
entrances to protect wire from chafing.
16. The supplier shall provide brackets for mounting fuse blocks as indicated on the drawings.
Galvanized Unistrut is permissible. The fuse mounting members shall be sufficiently rigid
to allow removal of fuses without deformation.
17. Twelve position Concentric control terminal blocks shall be provided as shown on the
drawings.
18. Heavy duty, 6-terminal CT shorting type terminal blocks shall be provided as shown on the
drawings.
19. The supplier shall be financially responsible for all relays and other control hardware
provided by the owner from the time they are received at the supplier’s designated location
until they are delivered in undamaged condition to the owner.
B. Design Standards:
All material furnished under this specification shall conform to the applicable codes and
standards of the technical societies and organizations listed in these specifications and to the
specific standards mentioned in this section. Reference to technical societies or organizations
may be made by abbreviation in accordance with the following list:
AISC, AISI, ANSI, ASCE, ASTM, AWS, IEEE, NEMA
C. Items and Services to be Provided by the Supplier
The supplier shall provide complete and functional substation indoor relay panels as described
in this specification that include, as minimum, the following:
1. Provide the manufacturing design for the steel relay panels to include shop drawings in an
AutoCad “dwg” format that show all fabrication details for each panel based upon the
owner’s criteria and attached drawings.
2. Provide drawings and descriptive information to the owner for the fabrication details and
for all hardware to be provided by the supplier for approval.
3. Construct and assemble the relay panels.
4. Install all relays, hardware, and wiring. Panel examples provided in the drawings package.
5. Ship all panels to the owner’s specified location site fully assembled and wired.
6. Provide all hardware items other than the Schweitzer Engineering Laboratories, Inc. items
being provided by the owner as shown on the bill of material drawings. The owner must
approve any deviations from the items specified on the bill of material drawings.
7. Accept financial responsibility for all relays and other control hardware from the time they
are received at the supplier’s designated location until they are delivered in undamaged
condition to their respective stations.
D. Items and Services to be Provided by the Owner
The owner will provide the following:
1. Drawings showing the general panel features, panel arrangements, device locations, and
panel wiring. (Drawings included are for RFP purposes only. Final drawings will be
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provided to the successful vendor on a project basis.) A material list of the items to be
installed on a typical panel is included on each panel’s bill of material drawing. A
preliminary nameplate list is included on each panel’s bill of material drawing. The number
of nameplates should be accurate.
2. All SEL relays and other SEL hardware
3. The owner will deliver SEL hardware to the manufacturer’s designated shop location six
weeks after PO is issued. Purchase orders will be issued based on need and construction
schedule. The proposal must state the location and address of the shop for delivery of these
devices.
4. Unloading of material and equipment at the site in accordance with shipping instructions
contained herein.
5. Field installation of panels into the control building.
6. Installation of field wiring.
VI. DRAWINGS AND ATTACHMENTS:
All drawings and other documents contained or otherwise accompanying this specification or
listed herein shall be considered a part of this specification.
The following is a list of the supporting documents:
1. Bus Differential Panels – Bus A, Bus B, Bus C, Bus D
2. Breaker Panels – 4010, 4020, 4030, 4040, 4050, 4110, 4120, 4130, 4310, 4320, 4340, 4350,
4440, 4450, 4460, 4500, and 4510
3. HMI Panels – Control Building #1 and #2
4. Panel Mechanical Drawing
5. Panel Line up Drawings – Control Building #1 and #2