Southern States LLS-I-2000 - Manual (Page 3)

Title: Southern States –
LLS-I-2000, LLS-II-2000 and LLS-II-3000
Load and Line Switchers Product Specification Guide
Page 3 of 5 Publication No.: PSG-805-080109
3.03 Interrupter
The load and line switcher shall use SF
6
single gap puffer interrupters. Vacuum
interrupters or multigap SF
6
interrupters are unacceptable. Each interrupter shall
be housed in an ANSI 70 gray composite or epoxy insulator that will not degrade
when exposed to the sun’s UV rays. Fiberglass housed interrupters without
silicone outer coatings and porcelain housed interrupters are unacceptable.
3.04 SF
6
Gas System
The gas system shall include the insulator and a color-coded, temperature
compensated density gauge that is visible from the ground.
A means for refilling the system in the field without disassembling the interrupter
must be provided. The device shall have a leak rate of less than 0.5% per year.
3.05 Operating Mechanism
Each interrupter shall be provided with a spring open mechanism and shall reset
itself when the switch is in the open position.
4.0 DESIGN TESTS
The load and line switcher shall be design tested in accordance with IEEE Std. 1247-
1998, Standard for Interrupter Switches for Alternating Current Rated Above 1,000
Volts. The testing shall include dielectric tests, power tests, an environmental test, and
a mechanical endurance test. The dielectric tests shall include 60 Hz power frequency,
lighting impulse withstand, and visual corona. The power tests shall demonstrate the
capability to perform load breaking, line dropping, and loop splitting. The power tests
and the dielectric tests shall be performed at full voltage on the complete interrupter
assembly. Testing individual modules is not acceptable. The environmental test shall
demonstrate the load and line switcher’s capability to perform over a temperature range
of –40ºC to +50ºC. The load and line switcher shall be endurance tested to 2000
operations.
5.0 PRODUCTION TESTS
Each load and line switcher shall be fully assembled at the factory, adjusted, tested, and
timed per IEEE Std. 1247-1998. The tests shall include:
5.01 Mechanical Operations Test
There shall be at least 25 mechanical operations performed at the factory.
Timing tests shall be recorded.