ABB ZS1 - Page 46

ABB Power Distribution 47
Example 2: Circuit-breaker with motor-operated charging mechanism, withdrawable part in service position
Operating sequence Result of operation Possible subsequent
(with panel door closed) Switch Charging switching operation
position condition
Switch on charging motor -
Automatic charging 0 On-Off
Close breaker... and I Off
automatically (re)charge I
Open breaker 0 On-Off
Close breaker... and I Off
automatically (re)charge I
Autoreclosing Off 0
sequence
(Activation via
protection system) On I (automatic
charging starts)
Off 0
Automatic charging 0 On-Off
Close breaker... and I Off
automatically (re)charge I
Test switching of the circuit-breaker without primary voltage can be carried out with the withdrawable part in the
test position (with the control wiring plug fitted).
Off-On-Off or auto-
reclosing sequence
Off-On-Off or auto-
reclosing sequence
Off-On-Off or auto-
reclosing sequence