Eaton SVS/12, User Manual

Page: 100 / 138

SVS/12
100 994.530 G01 02
4.3.2 Earthing the cable of a 12 - 24 kV load-
break switch/fuse panel, 630 A
Required accessories
Bag containing earthing equipment, consisting of
(see figure 1):

three earthing pins (a) with earth contact and
earthing cable (25 mm
2
) with connecting clamp

an operating rod (b)
For technical data, see chapter 7.
Interlocks
The cables can only be earthed if the high-voltage fuses
are removed and the earthing equipment is fitted.
It is only possible to gain access to the high-voltage fuses if
the load-break switch is open and the disconnector is in the
earthing position.
I
NSTALLATION OF EARTHING
1. Remove the high-voltage fuses (see chapter 4.3.6):

In this situation the disconnector is in the earthed
position and the load-break switch cannot be
turned on.
2. Remove the lower protection cover using the key.
3. Switch off the low-voltage side of the transformer to be
earthed and check that the cables to be earthed are not
live before attaching the earthing equipment.
4. Connect the earthing cable clamps to the earth bar of
the station using the wing nuts (figure 2).
5. Fit the earthing pins one by one using the operating rod
(figure 3). Proceed as follows:
L
IFE HAZARD
When fitting the earthing pins, never place your
hand between the red ring on the operating rod
and the earthing pins or the stop.

Connect the operating rod to the earthing pins and
push the earth contacts into the socket contacts of
the cable to be earthed.
1.
2.
3.