4. Operation
4-4
A080455E
A130499E
4.2.3 Leakage relay
When residual current flows to machine and
load, the residual current indicator lamp goes on
to trip the circuit breaker and circuit breaker
(dedicated to single phase).
<Set value at which it starts to function: 30mA>
Pressing the reset button of leakage relay, and
returning the lever of the circuit breaker to
“OFF” position once, then it is possible to switch
“ON” the circuit breaker again.
(See 4.2.4)
4.2.4 Circuit-breaker and circuit breaker (dedicated to single phase)
In case overload and short-circuited wire
connection should occur, the circuit-breaker
trips.
When this is tripped, stop the unit immediately
and reset the circuit breaker after getting rid of
the causes of trouble.
<How to reset>
In order to reset the lever of circuit breaker,
press hard the lever downward till the lever
sounds “click”.
4.2.5 Thermal relay
In case overload or short-circuit should occur to
load or load connection cable, this relay
functions to trip the circuit breaker.
It is not necessary to push the reset button even
after the three phase main breaker is tripped
since the thermal relay is set automatic return
at factory.
A130145E
Thermal relay
Reset button
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