If you know the load you could do worse than looking up data from a known maker, say Schneider, which do good data and are typical - as other maker's units will be similar.
There are various web pages ( example ) that describe the generic setting up process of typical units.
Once you have decided what to program as the fault current multipliers, Zs drops out of that in the usual way.
That's what I'll do. Thanks Mike.
As an aside, I've always believed that MCBs don't discriminate the same way as a fuse and MCB does... ie. that feeding a 16A MCB circuit from a 32A MCB circuit submain isn't the best of ideas.
If you know the load you could do worse than looking up data from a known maker, say Schneider, which do good data and are typical - as other maker's units will be similar.
There are various web pages ( example ) that describe the generic setting up process of typical units.
Once you have decided what to program as the fault current multipliers, Zs drops out of that in the usual way.
That's what I'll do. Thanks Mike.
As an aside, I've always believed that MCBs don't discriminate the same way as a fuse and MCB does... ie. that feeding a 16A MCB circuit from a 32A MCB circuit submain isn't the best of ideas.
