Zakład Wytwórczy Aparatów Elektrycznych Sp. z o.o.
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3.7. Earthing switches operating regulation
Earthing regulation consists of coupling shaft adjustment, in order to earthing blades on each pole should
achieve end positions in accordance with requirements presented in the drawing below and earthing circuit
closing occur simultaneously.
On one of earthing switches coupling rods there should be placed earthing switch blockade, in order to enable
earthing work only with open disconnector. Figure blow shows the way of fitting the blockade.
Contacts points of
contacts location
In lower end position, the earthing
blade's ending cannot be located
over insulators coupling tie rod
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