Southern States CSH - Manual (Page 7)

Title: Southern States – CSH & CSH-B
Horizontal Interrupter Style Circuit Switchers
Product Specification Guide
4.05 Operating Linkage
The vertical operating pipe, interphase pipe, and drive pipe shall be galvanized
steel and shall be sized as required by the manufacturer to provide reliable
operation of the circuit switcher and to prevent deflection and pipe sag.
4.06 Support Structure
Each circuit switcher shall be provided with a manufacturer supplied support
structure consisting of one vertical column (mounting pedestal) for 38 kV through
72.5 kV units furnished with 5 foot or narrower phase spacing. Two vertical
columns (mounting pedestals) shall be supplied for all 72.5 kV units furnished
with greater than 5 foot phase spacing, all 123 kV and 145 kV blade model units,
and all 123 kV through 245 kV non-blade model units. The 170 kV and 245 kV
blade model circuit switchers shall be supplied with three vertical columns
(mounting pedestals). All ratings of both model types shall be supplied with a
unitizing support frame except the 170 kV and 245 kV blade model units, which
shall be furnished with structural support braces in a “Y” configuration. The
mounting pedestals shall be hot dipped galvanized tubular steel. The frame
members and/or structural support braces shall be hot dipped galvanized steel.
Unless otherwise specified in the quotation request anchor bolts will be provided
by the purchaser. All anchor bolts shall be sized as required for the operational
loads generated by the circuit switcher. The manufacturer shall determine
anchor bolt sizing and anchor bolt plan details when providing the anchor bolts.
5.0 DESIGN TESTS
The circuit switcher shall be design tested in accordance with ANSI C37.09-2001. The
testing shall include a dielectric test, a power test, a continuous current test, and a
mechanical endurance test. The dielectric test shall include 60 Hz power frequency,
lighting impulse withstand, and visual corona. The power test shall include short circuit
interrupting, fault closing, and short time withstand.
6.0 PRODUCTION TESTS
Each circuit switcher shall be fully assembled as a three-phase unit at the factory,
adjusted, tested, and timed per ANSI C37.09 section 5.
The tests shall include:
6.01 Mechanical Operation
There shall be at least 50 mechanical operations performed at the factory.
Timing tests along with opening and closing operations at minimum and
maximum operating voltage shall be recorded.
6.02 Leak Test
An SF
6
leak test shall be performed to confirm the leak rate is less than 0.5% per
year.
Page 7 of 9 Publication No.: PSG-803-032615