05 stationary jaw contacts, 08 ground pads, 0 manufacturing requirements – Southern States CSH User Manual
Page 6: 01 wiring, Point-to-point without splices or tee connections, Bundled using cable ties, Sized per nfpa-70 except being no. 14 awg, 02 bearings, 03 bases, 04 interphase bracing
Title: Southern States – CSH & CSH-B
Horizontal Interrupter Style Circuit Switchers
Product Specification Guide
3.07.05 Stationary Jaw Contacts
(Supplied on vertical break disconnect switch model circuit switchers)
All stationary jaw contacts shall consist of formed copper contact fingers
of the reverse loop type so that during short circuit conditions that
exceed the interrupting rating of the circuit switcher the reverse loop
design produces high levels of opposing magnetic force in the fingers,
providing increased contact pressure to hold the disconnect blades in
the closed position. The current transfer surfaces on the contact fingers
shall consist of 15 mils brazed silver inserts. All contact fingers shall be
field replaceable. The contact fingers shall be backed by stainless steel
springs that are outside of the current path.
3.08 Ground Pads
Two NEMA 2 hole ground pads shall be supplied for grounding the structure to
the station ground grid.
4.0 MANUFACTURING REQUIREMENTS
4.01 Wiring
Wiring shall be:
1. Point-to-point without splices or tee connections.
2. Bundled using cable ties.
3. Clearly identified with permanently affixed markers.
4. Sized per NFPA-70 except being No. 14 AWG.
4.02 Bearings
The rotating insulator stack bearings and the outboard bearing shall be
maintenance-free, double row, sealed automotive ball type.
4.03 Bases
The circuit switcher bases shall be constructed of rectangular steel tube to
provide rigid stability and shall be hot dipped galvanized after fabrication. Double
channel bases or girder style bases are not acceptable. The rectangular steel
tubes shall be enclosed on the ends to birdproof the bases against nesting.
Open style bases are not acceptable. The rectangular steel tubes shall be
provided with welded mounting clips for rigid attachment of the bases to the
support structure.
4.04 Interphase Bracing
Hot dipped galvanized steel channels shall be provided as interphase bracing
and shall be sized by the manufacturer based upon the operational loads of the
circuit switcher.
Page 6 of 9
Publication No.: PSG-803-032615