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Topic Title: N-E Link
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Created On: 20 January 2014 12:33 PM
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 20 January 2014 12:33 PM
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rondo

Posts: 26
Joined: 22 June 2004

We have a main switchboard with a N-E link on the standby generator (450kVA) incoming supply.

The generator has been supplied with an internal N-E Link within the connection box. Apparently this is the normal arrangement.

Should I have the N-E link removed on the main switchboard or can I run with both in place?

Rondo
 23 January 2014 04:09 PM
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christait

Posts: 31
Joined: 08 February 2013

It depends on the set up of your generator and network. If the generator has earth fault protection fitted after the generator neutral-earth link then you will need to remove the neutral -earth link on the main switchboard, but be careful that it is not needed as part of the design for the system in normal operation. Then it is down to calculating your network to see if the link is needed, it is highly unlikely that it is there for no reason.
 06 February 2014 03:24 PM
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rjcomber

Posts: 34
Joined: 24 June 2002

Does the changeover have 4 pole breakers to prevent mains and generator neutrals being commoned. Don't want to get circulating paths through neutral/earth.
IET » Energy » N-E Link

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