Supplies return after blackout (U.K.)

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Re: Supplies return after blackout (U.K.)

pauluk #178464 05/31/08 05:42 PM

Joined: Dec 2005

Posts: 869

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Titirangi, Akld, New Zealand

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RODALCO

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The under frequency relays at least worked OK.

In NZ they are set to 47.8 Hertz for selected feeders and 47.5 Hertz for all feeders in substations of the local POCO Auckland distribution network, to avoid a complete blackout.

We tested all our UF relays about 2 months ago in preparation for an interesting wintertime with low hydro levels.

The product of rotation, excitation and flux produces electricty.

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Entire Thread
Subject	Posted By	Posted
Supplies return after blackout (U.K.)	pauluk	05/28/08 10:31 AM
Re: Supplies return after blackout (U.K.)	RODALCO	05/28/08 08:03 PM
Re: Supplies return after blackout (U.K.)	pauluk	05/28/08 08:40 PM
Re: Supplies return after blackout (U.K.)	pauluk	05/30/08 09:56 AM
Re: Supplies return after blackout (U.K.)	RODALCO	05/31/08 09:42 PM

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ECN Forum Forums General Topics of the Trade Non-US Electrical Systems & Trades Supplies return after blackout (U.K.)