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Message   Henri Derksen    Vince Coen   Update from Bill McGarrity.   September 27, 2018
 1:03 AM *  

Hello Vince,

VC> Had to do it myself few years back including two UPS's that saved the IT
VC> kit but not the UPS's themselves nor the modem, hub and router.

VC> Needless to say when the new UPS units arrived everything was placed
VC> under the UPS.

VC> This was only a fault that caused power to gow from 240 nominal to 96
VC> then 300 or so but they did try and say the power did not jump like that
VC> at least until the point that I showed the UPS logs with the power surge.

It's always good to have evidence ofcourse.
But did you know that the Voltage changes you mention often was the source of a
 lost Neutral power line in a 3 phase power sypply?
The supplu can than behave at all Voltage levels up to 415 Vac~.
That's a serious error between the cabling from the central transformer in your
 region to all the houses in the street.
Or sometimes to your home only, if it wat only the "lost" Neutral in your
cable.
Ask you nabours if they had the same faults in their local electricity system?

In my home the Blue Neutral is directly connected to the Green/Yellow Earth
conductor for security.

Ofcourse your UPS is a good security in this case, but there are also relays
that opens if the Voltage is out of its normal range to secure all apparatus in
 your (mobile) home, caravan, ship, or whatever.
Good luck with this.

Henri.

---
 * Origin: Connectivity is the Future; UniCorn BBS 31 26 4425506 (2:280/1208)
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