Earth Leakage Relay And Grounding - Shindaiwa DG1000MI Owner's And Operator's Manual

7-3. Earth Leakage Relay and Grounding

WARNING : ELECTRIC SHOCK
Ground the every grounding terminal to the earth as set in the manual.
If even one of all is unconnected by mistake or accident, it will be
much more dangerous for human than the NO-RELAY case,
because leaking current inevitably goes through the body.
Even though all the bonnets of the loads have been grounded to the earth, the
bonnet grounding terminal should be grounded to the earth.
Grounding should be made after the engine is stopped.
Whenever the Earth leakage breaker is activated, you should always repair
the leaking place first of all.
The generator is provided with the earth leakage breaker relay to detect any
Leakage produced due to such the trouble as insulation failure of the load while the
generator is running and to cut off the circuit for protection against any accident such
as electrical shock resulting from the trouble.
The specification of the earth leakage relay ;
Rated Sensitive Current: 30mA (or below) (Grounding resistance: 500Ω or below)
Sensitive time: Within 0.04 second.
(1) Grounding Work
The qualified electrician should perform
the grounding of the following 2 points
(500Ω Ω Ω Ω or below).
The Bonnet grounding terminal
of the generator.
The Bonnet of the load.
< NOTE >
In the event you cannot ground the
generator to the earth, consult with the
authorized distributor or our engineering
section.
Grounding Rod
21
Bonnet Grounding Terminal