TT systems and cu set ups

Spark123 · 6 Jan 2007

The four types of RCD mentioned in GN1 are:
S = Selective,
A = AC with DC pulse,
B = DC
AC = AC

The one on the left having a type AC RCD, type C MCB characteristic and the one on the right having a type A RCD, type B MCB characteristic:

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TT systems and cu set ups

Spark123

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