13
Instruction Booklet
IB022018EN
Effective July 2020
Instructions for the installation and
EATON
www.eaton.com
Figure 8.
Tank viewing port.
The camera port provides a view of all three of the 3PDS
mechanisms, and shows the ground, open and closed positions
and armature poles.
Figure 6
shows view port images of all three
disconnect switch poles.
Figure 9.
3PDS pole positions viewed at port. Images are
enhanced for clarity.
Circuit breaker cycle counter
The 1250 A XGIS circuit breaker is rated for 10,000 load or no-load
operations. The 2000 A and 2500 A XGIS circuit breakers are rated
for 2,000 load or no load operations. Each closing spring charging
operation is recorded on the cycle counter mounted on the left side
of the circuit breaker frame, and viewable through a window in the
front cover.
Figure 10. Circuit breaker cycle counter.
1.3.1.2 Medium-voltage area
SSIS conductor system
Power input and output circuits between XGIS vertical sections are
connected to the XGIS using shielded solid insulation system (SSIS)
conductor and termination elements. These elements are designed
for medium voltage application and provide excellent insulation and
current carrying features when properly installed using their mating
bus joints.
Figure 11. Main bus joint cones (SSIS).
The outer layer of each insulating component of the SSIS conductor
system is shielded and grounded to the tank. The entire exterior of
the SSIS conductor is at ground potential when properly installed.
Gas tank
Behind the low-voltage panel and above the output cable
compartment, the gas tank is the heart of the XGIS switchgear. The
tank is pressurized to slightly over atmospheric pressure with SF
6
gas, to insulate the MV components inside the tank.