SW fault [RE-wrenches]

[Matt Lafferty]

Carl:

Is this a single SW system (120 VAC)?  If so, it sounds like the set-up is
incorrectly done since it should be looking for 120 VAC nominal, not 240.
Just my two cents based on what I've seen.

-Matt Lafferty
pvpro at attbi.com


----- Original Message -----
From: "Carl Emerson, Free Power Ltd." <freepower at freepower.co.nz>
To: <RE-wrenches at topica.com>
Sent: Friday, May 10, 2002 10:34 PM
Subject: Re: SW fault [RE-wrenches]


> Hi there,
>
> I was out at a site today that has been in flawless service as a 'stand
alone'
> for about 5 years.
>
> The client has just had the grid connected and I programmed the SW for LBX
mode.
>
> When I tested the LBX cutting in I noticed the AC1 meter reading was
'hunting'
> over a wide AC voltage range and not reading the grid volts correctly. It
was
> cycling continually from 175 to 260 volts on a 240 volt system.
>
> Because of this the SW failed to synchronize with the grid and refused to
come
> on charge.
>
> Is this a common fault ?
>
> I noticed the AC2 was also 'hunting' and not giving a stable reading of
the
> generators output. We managed to bet the generator to sync. so that saved
the
> embarrassment of a flat bank.
>
> I would be interested to know what causes this fault if anyone knows.
>
> Thanks
>
> Carl Emerson
>
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