Protection systems - 07/31/03 06:32 PM
In our Regulations over here, it states that for poly-phase equipment, a system of protection must be used, that in the occurence of a fault on one phase of the equipment, the other phase or 2 phases, must also be disconnected from the supply when the first phase trips.
That's OK if you have a linked MCB on the circuit for each phase, but what if the protection is HRC, with individual fuse-links for each phase.
My question is, do you have this sort of Regulation where you come from?.
And if so, how is compliance normally achieved?.
That's OK if you have a linked MCB on the circuit for each phase, but what if the protection is HRC, with individual fuse-links for each phase.
My question is, do you have this sort of Regulation where you come from?.
And if so, how is compliance normally achieved?.