Zakład Wytwórczy Aparatów Elektrycznych Sp. z o.o.
15
zwae.com.pl
WARNING!
Before putting disconnectors into service under voltage, the
user should make sure that the assembly has been made cor-
rectly and check that the condition of the disconnectors and
operating mechanisms as well as the method and place of in-
stallation correspond to the conditions of safe operation. In par-
ticular, it is necessary to inspect the apparatus paying attention
to the condition of insulators, contacts and correct tightening of
screw connections.
Failure to perform inspection activities can lead to serious
breakdowns of switchgears. In case of difficulties, adjustment
should be ordered from the manufacturer.
5. OPERATING MANUAL
During the switching operations, it is advisable to do visual inspection of disconnector in each case, paying at-
tention to the correct achievement of limit positions by the apparatus, as well as the condition of the insulators
contamination, main contacts connections and operating mechanisms condition.
In case of finding any significant faults that could damage the disconnector or threaten the safety of operation,
the disconnector should be immediately disconnected from voltage and the faults should be removed.
5.1. Periodic inspections
It is recommended that disconnector inspections be carried out during periodic inspections of the indoor switch-
gear. During inspections should be checked in particular:
- condition of insulators, special attention should be paid to contamination of their surfaces and possible mechani-
cal damages (scratches, cracks, etc.);
- main contacts condition paying attention to possible damage (traces of melting, silver coating defects) in places
of their mutual contacts;
