6553-3 Phase Over Phase 138kV GOAB Switch - Tech SpecsIFB 6553– Exhibit 3 Page 1 of 5
IFB # 6553
EXHIBIT 3
Technical Specifications
Phase Over Phase 138kV GOAB Switch
A. PURPOSE
The City of Denton is providing information that will allow prospective suppliers to prepare
submissions to supply completely assembled and tested, phase over phase, 138kV, pole mounted,
gang operated air break (GOAB) switches with interrupters and motor operators or hand crank
operator, where applicable, in accordance with the technical requirement contained herein. A
drawing showing the expected arrangement of the pole mounted switches is shown on page 5.
Field service for installation support and a five year warranty are required.
The switches are to be priced FOB to the Spencer Utility Site, 1701C Spencer Road, in Denton,
Texas or to other substation sites in or near Denton as directed at the time of shipment.
B. SUBMISSIONS
Submissions shall be provided using the Exhibit 1, with supporting documentation as required.
Additional information clarifying the supplier’s product may be attached to their submission.
Pricing shall include all costs to deliver goods as specified in this specification. Any special fees
or commissions, and all freight for delivery to the City of Denton must be included in the quoted
price. Item pricing shall be mutually exclusive, thus the City of Denton reserves the right to choose
the best valued item from different vendors.
C. QUALITY CONTROL
The manufacturer shall be responsible for the quality control of the manufacturing processes to
assure that all requirements of these specifications are met. However, the City reserves the right
to observe, to inspect and to require additional quality control investigations, either by its personnel
or an independently employed quality control investigator, at any or all stages of fabrication at the
manufacturer’s facilities. Failure to adequately maintain fabrication and quality of fabrication until
completion shall be grounds for cancellation of the order or any part thereof.
Field failure or field repairs required due to quality control failures or manufacturing procedures
shall be the responsibility of the manufacturer.
D. WRITTEN WARRANTY and GUARANTEES
Written guarantees shall include any limitations as to the nature of failure or time limitations. The
guarantee shall begin upon receipt of the accepted units, not on the date of manufacture.
Guarantees shall indicate whether or not it is made on a full replacement basis or a prorated basis
and if prorated then what are the terms. Manufacturer/supplier guarantees that the goods furnished
under this specification are of high quality and agrees to replace any goods found to be defective
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during inspection, installation, or service for a minimum period of 60 months after unit is delivered
to Denton. All replacements by the manufacturer/supplier shall be free of charge F.O.B. at the
same delivery point called for in the original order. Replacements must be handled in a
professional and timely manner and in no case shall a replacement unit take longer than 60 days
to arrive in Denton after first being submitted for replacement.
Respondent guarantees that all products quoted and furnished under this agreement will be
accepted at any normally used United States approved repair and warranty shop should one be
available for the manufacturer’s product quoted. The City of Denton will not accept a
manufacturer’s product that was rejected or substandard and then sold to a broker for either resale
or scrap that would not be fully warranted by the original manufacturer.
The respondent must be an approved distributor by the manufacturer of these products, and is
authorized to sell the products to the City of Denton. The respondent also guarantees that the City
will be represented by the Manufacturer, should an issue arise, and that all manufacturer’s
warranties will be in effect for the life of the contract.
E. SPECIAL DELIVERY REQUIREMENTS
1. Shipment by open flatbed truck: Switches purchased under this agreement shall be
shipped FOB Destination by open flatbed truck fully assembled and ready for installation.
The owner will provide unloading and installation.
2. Delivery location: Switches shall be delivered to the Spencer Utility Site, 1701C Spencer
Road, Denton, Texas, 76205 or to other DME substations.
3. Notice of factory shipments: The supplier shall provide notice when the products are
shipped. The owner only has a forklift to unload the products. Contact Sam Bridges at
(940) 390-6279 for notices of shipment. Secondary contact is Misty Willis at 940-597-
7912. Delivery of the products will be accepted only between the hours of 8:00 am
and 3:00 pm Monday through Friday, excluding holidays.
4. 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.
This includes concealed freight damage as well as items originally defective from the
manufacturer. The supplier shall be fully responsible for detecting shipping damage as a
part of field services and assembly and for initiating all action necessary for replacement
or repair of such damage in a timely manner.
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F. TECHNICAL RESPONSIBILITIES AND REQUIREMENTS
Switch Specifications
Quantity 1
Configuration One-Way
Orientation Staggered (Delta)
Nominal Voltage 138 kV
BIL Rating 650 kV
Continuous Current Rating 3000 Amps at 30° Temp Rise
Momentary Current Rating 100 kA
Vacuum Interrupter Devices
Included with Switch? Yes
Insulators
Included with Switch? Yes
Insulator Strength High
BIL Rating 650 kV
Technical Reference Number TR-289
Pole Structure
Pole Type Steel
Guyed (G) / Self-Supporting (SS) SS
Shield Wire? Yes
Distribution Underbuilt? Yes
Clearance Issues? No
Pole Structure Furnished with Switch? No
Operating Environment
Location Denton, TX
NESC Loading District Heavy
Approximate Elevation 604 feet above sea level
Subject to heavy airborne particulate? No
Subject to salt-laden environment? No
Optional Features
Grounding Platforms Furnished 1
Tin-plated Terminal Pads Furnished? Yes
Terminal Connectors Furnished? Yes
Motor Operator
Quantity 1
Batteries, Charger and Battery Test? Yes
Motor Control Voltage 24 VDC
Customer Supplied Voltage 120 VAC
Torque 20,000 inch/lbs.
Operating Speed 3-5 seconds
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Switches shall be factory pre-assembled and adjusted to the maximum extent compatible
with shipping limitations.
RTU and communication devices will not be located within the motor operator enclosure.
RTU and communication devices will be provided and installed by the Owner.
The manufacturer shall include a price for onsite field installation assistance for final
switch adjustment.
The manufacturer shall provide a five year warranty on all parts along with the on-site
installation assistance for each switch.
The Owner will provide the steel pole and installation of the pole.
G. ACCEPTABLE MANUFACTURERS
DME will only accept submissions from specific manufacturers listed in the approved
manufacturers list below.
1. SEECO
2. TURNER
3. SOUTHERN STATES
The City has implemented a pre-approval process for substitution commodities and services. The
commodity approval form can be obtained via email (laura.hermosillo@cityofdenton.com).
Supporting documentation or samples must be submitted for review by Purchasing, Engineering,
field crews, QAG (Quality Assurance Group), and the manager of DME. Testing may be required
and may take substantial time to review. Vendors are encouraged to submit forms and samples
for consideration on the next solicitation for similar items.
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