Closing And Opening Operations (Sf6 Circuit Breaker, Clr Mechanism) - efacec NORMAFIX Instructions Manual

10.9. Closing and opening operations (SF6 Circuit Breaker, CLR mechanism)


Use the lever to load the springs (operate clockwise circular movements).

Close the circuit breaker by turning the maneuver button in a counter-clockwise
direction.

The circuit breaker will be ready to make an opening maneuver (turning the
maneuver button clockwise or by discharging the opening coil).

If you want to make a new maneuver, it is necessary to recharge the springs again,
even if the circuit breaker is not open. If the circuit breaker has a powered
mechanism, it will charge the springs automatically when necessary.
11. MAINTENANCE
NORMAFIX is a maintenance-free product.
However, when the switchgear is inoperative for a long time or if it is under severe
environmental conditions (dust, humidity, salty etc), it is advisable to perform the
following operations whenever there is a duty break:

Visual inspection to confirm the good condition of the material;

Wipe the dust or dirt that may arise in insulators parts (insulators, switches,
transformers, etc.) with a dry cloth. Never use solvents;

Verify the correct operation of the mechanisms and interlocks;

Verify the correct placement of the cable connectors;

Check the tightness of all connections;

Apply a very light coat of neutral industrial vaseline (Mobil Special with MoS2) in
the male contacts of earthing switch and the electrical contacts in air, having
removed the old grease with the help of a cloth impregnated with oil or other non-
chlorinated solvent.
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NORMAFIX