500-8067.9 * INSTALLATION AND OPERATING INSTRUCTIONS 8DJH * Revision 03 105
Operation
16.2 Protection tripping for the three-position switch-disconnector with spring-operated/
stored-energy mechanism
Re-establishing readiness
for service
Ö Earth the switching device.
Ö If necessary, replace all fuse-links, otherwise it will not be possible to charge
the closing and opening springs, as the tripping command is still active through
the striker.
Padlock Down Center Up
Actuating opening Earthing switch - Disconnector/switch-
disconnector
Circuit-breaker/transformer
switch
Possible switching
operations
Only EARTHING and DE-
EARTHING possible
No switching operations
possible
- Only CLOSING and
OPENING possible
- Only possible if the circuit-
breaker is open
- Charging the spring
NOTE!
If the opening spring of the transformer switch was tripped by a fuse-link:
Ö The fuse indicator shows red.
Ö The motor operating mechanism (option) is out of operation.
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