Fault Signalling - Chauvin Arnoux C.A 6460 Manual De Instrucciones

This coupling coefficient k must be < 0.15 (EDF
recommendation)
Remember to reconnect the earth terminal strip once you
have finished measuring !
3.5

Fault signalling

I I I I I If the FAULT indicator light flashes:
- either the fuse is defective
- or the circuit is cut off.
- or the rod resistance is too high or the spurious voltage is
excessive.
To check the fuse continuity, short circuit the H and E
terminals and make a measurement. If the indicator light
continues to flash, replace the fuse from the front panel
(see para. 5.1.3. Maintenance) If the indicator light no longer
flashes, the fuse is serviceable. You then need to check
the connections.
I I I I I If the HIGH RESISTANCE indicator light flashes: the
resistance in the voltage circuit (between the S and ES
terminals) is too high, or the voltage circuit is cut off. You
then need to check the connections.
I I I I I If the HIGH NOISE indicator light flashes: the spurious
voltage is too high in the voltage circuit In this case, move
the rods because they are in an area where there is too
much interference.
I If there is interferences and the measurement fluctuates
(and none of the indicator lights is flashing). Measure the
minimum and maximum then calculate the average to obtain
the result.
To be more sure, make two consecutive measurements at
intervals of a few seconds
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