What is the operation of the GVAD fault signalling contacts of the GV2 & GV3 motor protection circuit breakers?

GV2 & GV3 motor protection circuit breakers (MPCB) can be fitted with the following fault indicating contact blocks:

GVAD0110
GVAD0101
GVAD1010
GVAD1001

These blocks comprise fault signalling contacts and instantaneous auxiliary contacts.

GVAD0110
A N/C fault signalling contact (terminals 95-96), closed if there is no fault, open when a fault (magnetic or thermal) occurs.

A N/O instantaneous auxiliary contact (terminals 53-54), closed when the device is energised and open when the device is de-energised.

GVAD0101
A N/C fault signalling contact (terminals 95-96), closed if there is no fault, open when a fault (magnetic or thermal) occurs.

A N/C instantaneous auxiliary contact (terminals 51-52), closed when the device is de-energised and open when the device is energised.

GVAD1010
A N/O fault signalling contact (terminals 97-98), open if there is no fault, closed when a fault (magnetic or thermal) occurs.

A N/O instantaneous auxiliary contact (terminals 53-54), closed when the device is energised and open when the device is de-energised.

GVAD1001
A N/O fault signalling contact (terminals 97-98), open if there is no fault, closed when a fault (magnetic or thermal) occurs.

A N/C instantaneous auxiliary contact (terminals 51-52), closed when the device is de-energised and open when the device is energised.

How to test:
The instantaneous auxiliary contact test is performed by creating a state of transition of the handle actuator between the de-energised position and the energised position.

The fault contact test is performed by pressing the test button when the handle actuator is in the closed position.

Gepubliceerd voor:Schneider Electric Netherlands