C-BUS Relay Tripping RCD

Hi all

Aside from the previously posed problem, I found one of the RCDs at the installation tripped and would not reset. Disconnecting the C-BUS relay allowed this RCD to reset. After resetting the RCD the C_BUS relay was reconnected and worked fine. Only the Active was disconnected.

Can anyone shed any light on this?

Regards
Brett

 

When you say that you disconnected the Relay unit did you disconnect the power supply side, the output side or both?

Did you disconnect the unit from C-Bus or mains or both?

 

Newman

I only disconnected the active of the power for the 240V supply to the relay.

The same feed feeds 3 relays on the relay which were isolated by this same disconnection.

Regards
Brett

 

Trip RCD

Had a problem on current job with 2 light circuits tripping

It turned out to be a simple problem - being 3 phase you have to put the N & E on the correct Busbar for the Phase being used

E.g if you have a blue phase feeding your C-Bus relay Via a RCD then the N & E that the RCD monitors - goes to a N & E bar marked Blue.

If the N & E go to a Busbar say like the Red N & E there is a inbalance in the RCD cct tripping it.

Check to see if this might be the problem

Stu