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5
Earthing switch ES 230
5.6. Earthing switches
There are three types of earthing switches:
– ST
– ES 230 with 1S operating mechanism
– EF 230 with 2S operating mechanism.
They can be integrated into the enclosure containing the
switch-disconnector (fig. 9) or positioned on the load side of
the fuses or circuit-breaker (figs. 13, 14 and 15).
Earthing switch ST is integrated into the enclosure of the
switch-disconnector and has full making capacity.
Earthing switch ES 230, used in conjunction with the 1S
operating mechanism, is positioned on the load side of the
safety circuit-breaker, associated with the IMS, is interlocked
by a transmission lever to earthing switch ST and has full
making capacity.
Earthing switch EF 230, associated with operating
mechanism 2S,
is positioned on the load side of the fuses, is interlocked by a
transmission lever and has a reduced making capacity of
5 kAp.
ES 230 (12-17.5-24kV 16kA)
ES 230 (12-25kA) (17.5-24kV 21kA)
Fig. 9a
Fig. 9b
Pos. Description Q.ty
1 ES 230-N Disconnector assembly 1
2 Screw M8X20-8.8 ISO8678 6
3 M8 hex nut 6
4 Earthing jaws 3
5 ES 230-N 25kA Additional 25kV kit 1
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