Recent content by Marcolao

Further circuit diagrams are attached for reference. Thank you so much.

No MCCB or MCB was tripped, only the the RCCBs were affected. That caused around 7 nos. of servers downed. Finally, a fault equipment at circuit A(1) had been isolated, and all circuits had been reset. My question is that ; 1) Why the other RCCBs at the final circuit of the separated circuits...

Thank you so much, The cause of tripped of the 32A RCBO had been found and the fault part had been isolated. I just would some hints on that why other RCDs tripped at the same time. P.S. RCCB (residual current circuit breaker) is a kind of RCD

Hi, I got a problem and seeking for help, could anyone do me a favor. The power supply of network data centre is supplied by a UPS. The UPS’s output connects to 2 nos. of 800A MCCB individually. And the circuits are protected by: ( Form >> to ) A) 800A MCCB >> 100A MCCB >> 100A AI...