Faulty rcd

[Delboy247]

Has anyone seen a faulty rcd. With the trip switch still working. ? Or is this impossible.

 

[kmcgold]

yes if trip switch =test button

 

[Sparky Ninja]

Yes of course. That's why we apply many tests to RCD's.

 

[Delboy247]

yes if trip switch =test button

Ok nice one?

 

[Delboy247]

Yes of course. That's why we apply many tests to RCD's.

Cheers mate if the trip switch works fine there still can be a fault with it.

 

[kmcgold]

sorry didn't mean it that way

 

[SirKit Breaker]

Test Button is only there to confirm the mechanical operation of the RCD, not the electrical operation.

 

[Delboy247]

sorry didn't mean it that way

Cheers

 

[Delboy247]

Test Button is only there to confirm the mechanical operation of the RCD, not the electrical operation.

Cheers

 

[Phil]

the test button is only for the mechanical function of the rcd;
the rcd tester will establish the trip times of the rcd and ensure it does not trip on half x and trips within the times on 1 and 5x

 

[Phil]

doh sir kit beat me to it he has a faster keyboard than me

 

[Sparky Ninja]

The test switch is just a short link with a resistor in line, creating the imbalance. In theory the sensor coil and both other coils will be tested. However the sensitivity of the device cannot be determined (has to be between 50% and 100% rated current).