Southern States 15.5 kV-38 kV CapSwitcher - Manual (Page 5)

Title: Southern States 15.5 kV - 38 kV
CapSwitcher ®
Vertical Interrupter Style Capacitor Switcher
Product Specification
Guide
Page 5 of 8 Publication No.: PSG-809-101714
3.05 SF
6
Gas System
Each phase of the capacitor switcher shall have a color-coded, temperature-
compensated density gauge. The fill pressure shall be 52 psig nominal and 32
psig minimum. The capacitor switcher shall have a leak rate of less than 0.5%
per year.
3.06 Terminal Pads
Terminal pads shall be unplated aluminum with 4 hole NEMA drilling pattern for
use with purchaser furnished terminal connectors. The terminal pads shall be
reversible for mounting at the top, bottom, or either side of the interrupter.
3.07 Operating Mechanism
3.07.01 Spring Operating Mechanism
The capacitor switcher shall be provided with a spring open-spring close
mechanism with a mechanism duty cycle of 4 cycles – C – 6 cycles – O –
15 seconds. When issued a close command, the close coil releases the
closing spring allowing the mechanism to close the device in 4 cycles. After
a close operation has occurred, an open command will actuate the trip coil
which releases the opening spring allowing the mechanism to open the
device in 6 cycles. When a close operation and open operation have
occurred and both springs are discharged, the charging motor energizes
both the closing spring and the opening spring (in 15 seconds or less) and
prepares the mechanism to operate the device. Pneumatic, hydraulic, or
combination pneumatic/hydraulic mechanisms are not acceptable. Devices
utilizing multiple mechanisms are not acceptable.
3.07.02 Mechanism Components
1. Electric spring charging motor
2. Trip coil
3. Close coil
4. 6 spare non-adjustable auxiliary switch contacts factory set as 3 normally
open (NO) and 3 normally closed (NC) contacts
5. Open-Close position indicator
6. Manual trip capability
7. Mechanical operations counter
8. Thermostatically controlled heater
3.08 Ground Connections
Two grounding connections which accept #8 solid to #2/0 stranded connectors
shall be supplied for grounding the mechanism to the station ground grid.