Voltage tolerance
Voltage tolerance
(OP)
Please advise what is a voltage tolerance for 3 phase, 400V utility in France.
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RE: Voltage tolerance
a Permanent nominal voltage variation: ± 10%.
b. Five minutes nominal voltage variation: ± 20%.
Enclose please find a site to verify this info with one of the major local utilities, Electricité De France (EDF).
http://www.edf.fr/index.php4?coe_i_id=617
RE: Voltage tolerance
RE: Voltage tolerance
There is a URL maintained by a member of Eng-Tips.com that may help.
See www.global-electron.com
RE: Voltage tolerance
Most countries used to have 380/220, but the UK and some other(s) had 415/240 volts.
The European harmonization has brought a cahnge to that situation and over the last ten or fifteen years, the 220 has slowly been adjusted upwards to 230 V and the 240 downwards to 230 V. So, we all have 400/230 V now. And the official tolerance is +/- 10 percent. But asynchronous induction motors are not supposed to deliver rated power if outside +/- 5 percent. Frequency is 50 Hz.