Page 102 - Current & voltage sensors catalog

Electronic voltage detectors
Instructions for mounting and wiring VD detectors

3 - 1st switching on of the detector
After applying high voltage to the primary terminals of the VD voltage detector, pay attention to the following points:
– do not touch the HT terminals (high voltage) of the VD voltage detector
– do not try to remove the lenses of the LEDs

Checking correct functioning
The VD voltage detector LEDs should flash about every 0.5 seconds as soon as the dangerous voltage U ON is passed. The LEDs should remain extin-
guished below U OFF, (see the detailed characteristics of the VD1500 voltage detector). In the event that LEDs do not work when high voltage is applied:
– electrically isolate the system
– make sure that no residual voltage is present in the VD voltage detector (voltmeter or other means)
– check that the VD voltage detector wiring is correct (this may explain why the LEDs do not work)
4 If no faults are found in the installation, carry out a complete replacement of the voltage detector.
Please contact your distributor for further information on this subject or refer to the document Voltage Detector usage - Preventive and Curative
Maintenance.

1SBC140070S0201

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