Eaton SVS/12, User Manual

Page: 89 / 138

SVS/12
994.530 G01 02 89
4.2.5 Operation of disconnector, 1250 A
panels
Description of disconnector
The disconnector has two positions, the busbar position
and the earthing position.
N
OTE
Switching from one position to the other is only
possible if the circuit-breaker is open.
Busbar position
In the busbar position the disconnector is connected to the
busbar system, so that if the circuit-breaker is closed, the
cable is also connected to the busbar system.
See figure 1.
Earthing position
In the earthing position the disconnector is connected to
the earth busbar.
See arrow in figure 2.
When the circuit-breaker is closed, the cable is also
connected to the earth busbar.
When the circuit-breaker is open, the disconnector forms
an earthed barrier between the busbar system and the
cable.
In the earthing position, there is also a safe separating
distance between the cable and the busbar system.
Eart h
busbar
Sw it ch
connect ion
1.
Eart h
busbar
Sw it ch
connect ion
2.