■ Operation check
For safety reasons, check on the operation of the leakage relay at the startup of the
machine according to the procedure described below:
Ф Start up the machine according to
Г5- 2 Startup
J
© Make sure that all breakers of the load side
are "OFF'.
© Set the breaker of three phase and single
phase to "ON".
© Press the T E ST button on the leakage relay.
If this causes the LEAK lamp (red) on the
leakage relay to go on and the breakers to be
activated, the leakage relay can be regarded
as operating normally.
(5) Press the RESET button and return the
breaker to the "OFF" position. This allows the
breaker to be turned to "ON" again.
The leakage relay, once it is activated, holds
its activated state until the RESET button is
pressed or the machine is stopped.
©Action for operation of the leakage relay
When the leakage relay is activated, then stop the engine, and measure the insulation
resistance several parts and repair the leak spot before restart the engine.
EARTH LEAKAGE RELAY
3 - phase ' ф :
•
PILOT LAMP
l-phsse
О
О
RESET BUTTON
TEST BUTTON
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33
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