Amend 01_SC Pad-Mounted Switchgear Salient Characteristics Added details.docx
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- Attached to
- Amendment 1 - Pad-Mounted Switchgear Federal contract opportunity
- Solicitation number
- FA441825Q0008
About this file
This document is an Amendment 01 Salient Characteristics specification for a pad-mounted high voltage switchgear for the Department of the Air Force Air Mobility Command's 628th Civil Engineering Squadron. The specification details a specific S&C Electric Vista Switchgear 4-Way Pad Mounted Enclosure with critical technical requirements: a 15.5 kV electrical system rating, 12.5kA short-circuit rating, constructed from 304L stainless steel in olive green, and designed for a single unit with specific electrical configurations including one 600 Amp input switch and three 200 Amp fault interrupter switches.
The switchgear is specifically engineered for utility and electrical maintenance operations, offering critical safety features such as minimizing electrician exposure to high voltage hazards, isolating grid faults, and enabling circuit reconfigurations. Physical design specifications include a pad-mount style enclosure, 305L stainless steel construction, removable panels, viewing windows for switch position verification, grounding points, and maximum dimensional limits of 77 inches length, 42 inches height, and 66 inches width. The solicitation (FA441825Q0008) is for purchasing one unit to support the Air Mobility Command's electrical infrastructure maintenance and upgrade capabilities.
View the file
Other files for this federal contract opportunity
| File | Type | Posted |
|---|---|---|
| FA441825Q0008 Amend 01_RFQ Pad Mounted Switch Gear.pdf | ||
| Amend 01_Clauses and Provisions.pdf | ||
| FA441825Q0008_RFQ Pad Mounted Switch Gear.pdf | ||
| Atch 2_Clauses and Provisions.pdf | ||
| Atch 1_Salient Characteristics.pdf |
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Text version
SALIENT CHARACTERISTICS
S&C ELECTRIC VISTA SWITCHGEAR
4-WAY PAD MOUNTED ENCLOSURE
Amendment 01 – 11 April 2025
I. GENERAL OVERVIEW.
This memo outlines the key characteristics of a pad mounted high voltage switch enclosure designed for 15.5 KV electrical systems, with a 12.5kA short-circuit rating. It is constructed from 304L stainless steel for durability and corrosion resistance and coated in olive green to blend with environmental surroundings and meet aesthetic requirements.
II. SPECIFICATIONS.
At a minimum the equipment and accessories shall possess the following specifications:
Quantity: One (1) each.
Manufacturer: Brand name or equal to S&C Electrical Part #934132R1-OP14T3.
Fault interrupter type SF6 gas insulated vacuum fault interruption
Voltage Rating:
· Max kV: 15,500 Volts
· Main Bus Continuous Amps: 600 Amp
Compartment Configuration:
S&C Part # 934132R1-OP14T3 4 Ways needed Input: 1 each 600 Amp Load interrupter switch Output: 3 each 200 Amp Fault interrupter switches Needs a 4 Way Two-hole ground pad 15.5KV Stainless Steel Olive Green Three Pole manual fault interrupter on three fault interrupting ways 77 Inches max length 42 Inches max height 66 Inches max width
III. APPLICATIONS:
This S&C Electric Vista Switchgear enclosed switchgear are essential for minimizing the exposure of electricians to high voltage hazards during power outages and utility maintenance tasks. Additionally, these switchgears play a crucial role in isolating grid faults, facilitating the back-feeding of circuits, and enabling loop configurations for facilities or circuits undergoing upgrades or repairs. Their deployment ensures not only the safety of personnel but also the efficiency and reliability of critical electrical operations during maintenance and upgrade activities.
IV. PHYSICAL DESIGN:
The following design characteristics are critical to supports the seamless integration of the switchgear within existing base power grid.
Enclosure Type: Pad-Mount style switchgear.
Material: Pad mounted switchgears must be constructed of 305L stainless steel and corrosion proof hardware.
Switch Compartments:
· Equipped with 1 each 600-amp rated bushing with removable silver-plated copper threaded studs.
· Provide parking stands adjacent to each bushing to accommodate horizontal feedthroughs and standoff insulators.
· Provided viewing windows within the termination compartments to allow visual verification of switch position, observation of switch-position open/close labels and inspection of blown-fuse indicators on power fuses.
· Removable panels to provide access to install elbows and cables
· 305L Stainless steel construction
· Open/Close/Ground positions with padlock positions
Enclosure grounding:
· Must have a grounding point across the full width of the fuse compartments for connecting of cable concentric neutrals.
File details come from the government source that posted it. Updated .