
IG-322-EN version 03; 22/07/2022
33
General instructions
SF
6
-insulated circuit-breaker panel:
Type
gae
.630 -1LSV(G)-/5/
in modular extensible design up to 24 kV, 20 kA
Technical description
The front cover interlock (Figure 4.7) ensures that the front
cover can only be removed, when the earthing switch has
been operated. When the earthing switch is switched OFF,
a bolt engages in a recess in the front cover, thus locking it.
The interlock between the circuit- breaker and the
disconnector or earthing switch (Figure 4.8) is effected
with the aid of the operating lever. It can only be changed,
when the circuit-breaker is switched OFF. Whereby the
switch positions of the disconnector or earthing switch are
immaterial.
The interlock between the disconnector and the earthing
switch (Figure 4.8) is effected by the switch position
indicator. This closes off the plug-in opening for the
switching lever on the corresponding switching shaft.
An anti-reverse interlock (Figure 4.8) is available upon
request.
This prevents the disconnector from being switched ON
when the front cover has been removed. The anti-reverse
interlock is switched ON or OFF by the fastener key.
When the fastener is open, the plug-in opening for the
switching lever on the disconnector switching shaft is
closed off by a plate.
With the front panel removed the earthing switch can be
switched off in order to check the cables.
4.10. Current transformer
Low voltage toroidal transformers and spectacle-shaped
core transformers in accordance with IEC 61869 are used
around the extended outer taper bushings in the circuit-
breaker panels.
The protection and optional measurement cores are
integrated into a common transformer block.
The current transformers are optionally provided with an
calibratable or calibrated measurement core.
It is possible to remove or replace the current transformers
simply, without opening the gas tank. It is also possible
to use window type current transformers that are fitted
around the earthed cable sheath of the conductor cables
in the cable duct.
1
Current transformer
Figure 4.9.
Содержание ORMAZABAL gae.630
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