bmw_apprentice
Member
Hi all,
Not a PLC fault, an electrical one. But the electricity supplies a PLC. So I guess it counts.
I have a C63 3 phase MCB providing the circuit protection to a large industrial unit, loads of sockets, things this and that. I have a single phase robot controller plugged into the 13A ring in the building, as it is designed to be. On this I also have a few things wired up through other circuit breakers. A single phase C4 circuit breaker feeds some stuff, when I cause a short circuit on this (for testing of the systems reactions) it trips the C4 but also trips the C63. I assume this is because of load imbalance.
However, how do I stop this from happening? I don't really want to change the C63 breaker unless I absolutely have to as the landlord will have to do it I expect. I imagine it is just a design problem. Or an education problem on my behalf. Should I need a D type or B type breaker or am I missing the problem?
Any help on a postcard appreciated. Circuit breaker pictures attached if this helps.
Not a PLC fault, an electrical one. But the electricity supplies a PLC. So I guess it counts.
I have a C63 3 phase MCB providing the circuit protection to a large industrial unit, loads of sockets, things this and that. I have a single phase robot controller plugged into the 13A ring in the building, as it is designed to be. On this I also have a few things wired up through other circuit breakers. A single phase C4 circuit breaker feeds some stuff, when I cause a short circuit on this (for testing of the systems reactions) it trips the C4 but also trips the C63. I assume this is because of load imbalance.
However, how do I stop this from happening? I don't really want to change the C63 breaker unless I absolutely have to as the landlord will have to do it I expect. I imagine it is just a design problem. Or an education problem on my behalf. Should I need a D type or B type breaker or am I missing the problem?
Any help on a postcard appreciated. Circuit breaker pictures attached if this helps.