Outdoor Air Switches

Accessories

Cable Guides (Outriggers)

Auxiliary Switch

The frequent need for remote switch position indication, electrical interlocking of main and ground switches with each other or with breaker controls and other operating sequences, requires the application of auxiliary switch units to switch operating mechanisms. These separately mounted devices are available in multi-stage circuits from 2 thru 16, in multiples of two stages. Auxiliary switches are totally enclosed in weatherproof housings, which provide entrance openings for termination of conduit.

Cable guides or outriggers are fabricated of either extruded T-sections or tubular bus. Both versions are high conductivity aluminum and bolt directly to the switch terminal pad, on either the hinge or the jaw end. The outer end of the outrigger has a NEMA standard 4-hole terminal drilling. Cable guides are used to support the cables well away from the switch base and grounded parts. They are designed for a 100-pound maximum downward force at their outer end. Standard lengths are 2, 3, and 4 feet from insulator centerline to the outer end of the cable guide.

EHV Controls

The GTS is a superior design to other operating mechanisms for EHV switches that will reduce your crew time and dramatically decrease overall project costs. The GTS is a design concept that has been accepted in the air disconnect market for 50 years. A 65% parts reduction results in greatly reduced assembly and adjustment time. It will operate switches up to 500kV and 5000 amps. The GTS has been through rigorous mechanical operational tests enduring over a 4-month period and performed more than 5,000 operations. The GTS is a multi-revolution design with an operation time of 14 seconds. The drive insulator rotates on a maintenance free 30:1 worm gear rotor bearing assembly (Figure 1). The housing is comprised of high strength aluminum alloy castings including three sets of stainless steel bearings. A 1:1 ratio type “T” gearbox is used to transfer the vertical load to a horizontal load. The gearbox is constructed of stainless steel shafts enclosed in an aluminum housing (Figure 2). Interphase shafts connect to the rotor bearing under each pole. The heavy duty coupling (Figure 3) is designed to simplify the adjustment process. Each pole is symmetrical which allows the operator to be mounted on any of the 3 phases. The GTS is a competitive product and is another example of how Pascor Atlantic responds to customer needs. It is recognized that crew installation time is a substantial cost to an overall project. The GTS in actuality reduces budgeted installation and adjustment time by 50%.

Figure 1

Figure 2

Figure 3

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