4. Insert the lever in the actuating shaft of the earthing
switch and turn clockwise.
Figure 5.46. Lever turn detail
5. Remove the lever.
6. Move the slide back to its initial position.
When working without voltage cubicle powered down,
it is mandatory to interlock the earthing position with
either a padlock or a safety lock.
Figure 5.47. Slide detail
7. Verify that the cubicle is in earthing position.
Undervoltage coil
The cgmcosmos-v circuit-breaker cubicles can be
equipped with an electromechanical safety device called an
undervoltage coil. Its function is to ensure that the circuit-
breaker opens in the event of an unexpected drop of more
than 30% in the auxiliary voltage.
IG-296-EN version 01; 12/03/2020
60
Recommended sequence of operations General instructions
cgmcosmos: Medium voltage cubicles with full insulation
in SF
6
gas up to 24 kV in accordance with IEC Standard
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