Denyo DCA-13LSK, Instruction Manual

Page: 60 / 61

12. Options instruction manual
If equipment for the option device to the machine after the purchase is required,
contact distributor or our office.
If the machine is modified on your own, the warranty o f manufacturer will become
invalid.
12-1 Earth leakage Relay
A WARNING
ELEC TR IC SHOCK by leak can kill.
Wu в
H Improper grounding may lead to death due to electric
t A
shock. Because the device for leakage protection does not
j a \
operate effectively.
* Grounding terminal for the earth leakage relay, case
/
grounding terminal and case of the load are grounded.
(X) Description of the device
The machine is provided with an earth leakage relay to detect
any leakage produced due to such trouble as insulation failure
of the load during operation and to cut off the circuit for
protection against any accident such as electrocution resulting
from the trouble.
The.current sensitivity of this relay is 30 mA.
Improper handling of the relay may lead to unsafe condition in
comparison with that does not use the relay.
To ensure further safety, install a leakage relay for each load at
the position near the load.
(2) Grounding
Ground as following to operate the earth leakage relay
certainly.
H Grounding of the machine
Ground the grounding terminal for earth leakage relay and case
grounding terminal according to the below.
® Grounding of the grounding terminal for earth leakage relay
If grounding described below does not comply with the local
rule, stricter of the two shall apply.
Use the grounding wire which sectional area is
5
.
5
шш
2
or
larger. Usually it is possible that using attached grounding
rod. But if grounding resistance is over 100 Q , provide the
grounding rod which surface area contacted the ground is
large.
Ф Grounding of the case grounding of the machine
Refer to Г4-3(1) Case grounding of the machine See p.21 J .
A M I T S U B I S H I
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Ш Г Н ICAXAG? RELAY
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ТИТИ/ТТСШ
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