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GregS
Guest
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 Posted:
Wed Dec 07, 2005 5:35 pm Post subject:
England volts |
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Whats the minimum and maximum voltage you usually measure out of the wall sockets
in England?
greg
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Meindert Sprang
Guest
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| Posted:
Wed Dec 07, 2005 5:35 pm Post subject:
Re: England volts |
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The minimum is 0V and the maximum around 325. But it changes quite
quickly....
Meindert |
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Roger Hamlett
Guest
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Wed Dec 07, 2005 5:35 pm Post subject:
Re: England volts |
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Far too much...
It varies massively with where you are. The legal 'minimum', is 216v, with
a maximum of 254v. However the former does not include droop induced
inside your building, and for both figures the keywrd is 'regularly'. If
the voltage rises above 254v, once a week when a particular bit of
equipment turns off, the supply company will do nothing about it (I have
recorded 275v at one site). Similarly if it drops below 216 'regularly'
_at the incoming connection_, the supply company is meant to make
adjustments, but the interpretation of this can be hard to get enforced.
Best Wishes
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Ian Stirling
Guest
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| Posted:
Wed Dec 07, 2005 5:35 pm Post subject:
Re: England volts |
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| Quote: | Far too much...
It varies massively with where you are. The legal 'minimum', is 216v, with
a maximum of 254v. However the former does not include droop induced
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Current minimum here is about 210V - which is annoying, as my UPS trips on
for maybe 3 mins a day (but as it's got an hour uptime this isn't so bad. |
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GregS
Guest
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| Posted:
Wed Dec 07, 2005 11:36 pm Post subject:
Re: England volts |
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| Quote: | Far too much...
It varies massively with where you are. The legal 'minimum', is 216v, with
a maximum of 254v. However the former does not include droop induced
inside your building, and for both figures the keywrd is 'regularly'. If
the voltage rises above 254v, once a week when a particular bit of
equipment turns off, the supply company will do nothing about it (I have
recorded 275v at one site). Similarly if it drops below 216 'regularly'
_at the incoming connection_, the supply company is meant to make
adjustments, but the interpretation of this can be hard to get enforced.
Best Wishes
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I'm looking at some supplies. Some are 100-240 and some are 90-264.
I suppose thats opperating mode, and not absolute maximums, but I'm really not sure.
greg |
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Dan Hollands
Guest
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| Posted:
Wed Dec 07, 2005 11:42 pm Post subject:
Re: England volts |
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I would consider those values as the range of voltage over which the device
will operate properly
--
Dan Hollands
1120 S Creek Dr
Webster NY 14580
585-872-2606
dhollan3@rochester.rr.com
www.QuickScoreRace.com |
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Michael A. Terrell
Guest
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| Posted:
Thu Dec 08, 2005 12:15 am Post subject:
Re: England volts |
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| Quote: | The minimum is 0V and the maximum around 325. But it changes quite
quickly....
Meindert
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It also has a nasty habit of changing polarity! ;-)
--
?
Michael A. Terrell
Central Florida |
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Pooh Bear
Guest
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| Posted:
Thu Dec 08, 2005 1:35 am Post subject:
Re: England volts |
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GregS wrote:
| Quote: | Whats the minimum and maximum voltage you usually measure out of the wall sockets
in England?
|
Officially ( by commitee harmonisation ) it's 230V ac. There's a bit of paper that
says so !
In reality it's 240V still.
In practice I regularly see 252V both in the office and at home ( 20 mi apart ). I
suspect this is due to the demise of manufacturing in the UK and circuits that once
powered factories are now lightly loaded.
I've seen it as low as 190V many years ago on an 'overloaded circuit' ( in a factory
- we don't have many of those any more ). That's out of official tolerance though. I
doubt you'll often see it below 230V these days.
Graham |
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Pooh Bear
Guest
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| Posted:
Thu Dec 08, 2005 1:35 am Post subject:
Re: England volts |
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| Quote: | It is supposed to be 230V plus or minus 10% which I believe is the European
standard, i.e 217V to 253V. Before this is it was nominally 240V but no
changes were made to the generating equipment after the euro standard came
in on the basis the the 240V supply already kept within the Euro limits.
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I think it's actually -6% +10% IIRC. Although we do test for psu dropout at
207V ( -10% )
Graham |
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Guest
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| Posted:
Thu Dec 08, 2005 1:35 am Post subject:
Re: England volts |
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GregS wrote:
| Quote: | I'm looking at some supplies. Some are 100-240 and some are 90-264.
I suppose thats opperating mode, and not absolute maximums, but I'm really not sure.
greg
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The 2nd is, the first is nominal. They quite likely both cover the same
range.
NT |
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Ian Bell
Guest
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| Posted:
Thu Dec 08, 2005 1:35 am Post subject:
Re: England volts |
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GregS wrote:
| Quote: | Whats the minimum and maximum voltage you usually measure out of the wall
sockets in England?
greg
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It is supposed to be 230V plus or minus 10% which I believe is the European
standard, i.e 217V to 253V. Before this is it was nominally 240V but no
changes were made to the generating equipment after the euro standard came
in on the basis the the 240V supply already kept within the Euro limits.
Ian |
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Roger Hamlett
Guest
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| Posted:
Thu Dec 08, 2005 5:35 pm Post subject:
Re: England volts |
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| Quote: | I've seen it as low as 190V many years ago on an 'overloaded circuit'
( in a factory
- we don't have many of those any more ). That's out of official
tolerance though. I
doubt you'll often see it below 230V these days.
It might well not be out of official tolerance.... |
You have to remember that the 'tolerance', is as the supply arrives at
your property. Changes inside the property, are _your_ responsibility, not
those of the supply company. If it was 216v at the incoming supply
connection, the supply was still 'in spec'.
Best Wishes |
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John G
Guest
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| Posted:
Fri Dec 09, 2005 9:35 am Post subject:
Re: England volts |
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| Quote: | Whats the minimum and maximum voltage you usually measure out of the
wall sockets
in England?
greg
-- |
Wot's Your Real Problem?
--
John G
Wot's Your Real Problem? |
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neon
Joined: 25 Feb 2006
Posts: 594
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Sat Mar 18, 2006 2:28 pm Post subject:
Re: England volts |
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| your ups is realy no good as designed there is if it continuoisly drops out. i am in the states and the power source is quite stable because of regulations you have only one small island to control we have a continent to control. and it is a business to make $$$ and therefore no co. wants to loose costumers using power. military specify as input for their PS units as 80v ac input and 160 as operational inputs. but usualy the power is between 115v to 110. final note if your power is supplied by goverment agency i can see generating as part of good economy not as relaibility concerne |
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neon
Joined: 25 Feb 2006
Posts: 594
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Thu May 11, 2006 4:58 pm Post subject:
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| Final note considering that my previous writeting is totaly out of whacks. power company here in the USA supply power to all of the USA with ties to mexico. So it is big the bigger the better there maybe 100 company involved every day buying selling power from each other NEVADA in the summer needs more power to stay cool while other states are cooler so generation is bought for the states that needs power now. all states have generating plants solar .wind gas hydrolics oil and in emergency they have peakers or jet engines providing temporary power to stabilize the GRID. by law the generating plants must have what is called reserved spinning power also because disconneting from the GRID is disastrous it never happens yet. and the frequency as run by all clocks are 60 cycles which minutes by minutes is varying by a % because of loads requirements however at the end of a day the +- is basically zero because of control multiplied by all control in the USA |
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