Traps To Avoid - Chauvin Arnoux LOCATO 110 Mode D'emploi

TRAPS TO AVOID

The LOCAT is able to detect the presence of a Live/Earth leak resistance:
this leak resistance not necessarily setting off the circuit breaker. Care
must be taken to avoid problems of interpretation!
For an installation on 220V, a leak resistance of 100 kW will cause a
leakage current of 2.2 mA (not detectable by the circuit breaker).
In this case, the current goes to the live side of the circuit and returns partly
by the earth of the receiver, partly to the earth side connecting to the
leakage resistance.
The Receiver, when positioned where the leak is, will detect the current
flow and the user will have the impression that the wire is prolonged in this
direction, when in fact it is going towards the counter.
Conclusion :
The LOCAT is an ingenious instrument but requires a minimum of
reflection in use to "sound out" an electrical installation.
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