General Instructions
Safety elements
64
cpg.1
Fully SF6 gas insulated single and double busbar GIS switchgears up to 36 kV in accordance
with IEC Standards
IG-137-EN version 03; 23/06/2016
8.2.1 Locking with a padlock
The cubicles are supplied with an independent padlock
for both the switch-disconnector and the earthing switch in
closed or open positions. Padlocks with ring diameters of
between 8 and 11 mm can be used.
8.2.1 Locking with lock
Both the switch-disconnector and the earthing switches
can have an optional lock interlocking device, which
allows its operation to be blocked in both open and closed
positions.
8.3 Interlocks
The switch, circuit breaker and earthing switch are
interlocked in accordance with section 5.11 of standard
IEC 62271-200.
The disconnector driving shafts are accessed via a “
driving
switch
”, and the levers of both disconnectors can only be
introduced if the circuit breaker is in open position. The
circuit breaker can only be operated if all the disconnector
driving levers have previously been removed. Also, all
electrical operations are overridden if any of the levers has
been inserted in the actuation shaft.
The circuit breaker can only be connected in the end
positions (connected) of the disconnector or earthing
switch. There is also an effective earth driving switch fitted
with protection.
The cable compartment is only accessible with the
earthing switch and the circuit breaker connected (effective
earthing).
In functional units which incorporate fuses (protection by
means of a switch-fuse combination and busbar voltage
metering with disconnection and fuses), access to the
fuse compartment is interlocked with the corresponding
disconnector so that the compartment is only accessible
with the earthing switch in the closed position.
Other available options are:
• Earthing switch electromagnetic interlock.
• Locking with interlocks for:
Earthing switch in closed position.
Earthing switch in open position.
Disconnector in open position.
Summary of Contents for Ormazabal cpg.1 Series
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