Southern States 15.5 kV-38 kV CapSwitcher - Manual (Page 6)

Title: Southern States 15.5 kV - 38 kV
CapSwitcher ®
Vertical Interrupter Style Capacitor Switcher
Product Specification
Guide
Page 6 of 8 Publication No.: PSG-809-101714
4.0 MANUFACTURING REQUIREMENTS
4.01 Mechanism Housing
Each capacitor switcher shall be provided with a housing that connects the three
interrupters to the spring operating mechanism at 24 inch phase spacing for 15.5
kV, 27 kV, and 38 kV.
4.02 Support Structure
The capacitor switcher is designed to be mounted on a capacitor bank platform
or structure provided by customer. Mounting details of the capacitor bank
platform or structure must be defined in the quotation request.
5.0 DESIGN TESTS
The capacitor switcher shall be design tested in accordance with IEEE C37.66-2005,
Standard Requirements for Capacitor Switches for AC systems (1 kV to 38 kV),
unless otherwise noted in section 3.02.01. 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, lightning impulse withstand, and
visual corona. The power test shall include fault closing, short time withstand,
resistor fault closing, and shunt capacitor bank switching. The capacitor switcher
shall also be design tested in accordance with IEEE C37.09a in demonstration of the
ability of the capacitor switcher to switch capacitive current multiple times as in a
back-to-back capacitor bank switching application.
6.0 PRODUCTION TESTS
Each capacitor switcher shall be fully assembled as a three-phase unit at the factory,
adjusted, tested, and timed. The tests shall include:
6.01 Mechanical Operation Tests
There shall be at least 50 mechanical operations performed at the factory.
Timing tests, opening and closing operations at minimum and maximum
operating voltage, and spring recharge time 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.
6.03 Resistance Tests
6.03.01 Current Path Resistance Tests
A terminal-to-terminal micro-ohm resistance check shall be performed on
each interrupter using a 100 A DC source and the values shall be recorded.