T
treez
Guest
Hello,
Sorry to discuss UK, but i think the mains is more badly deviant in UK than some other countries.
Some time ago, a very kind edaboarder, KlausST sent me some data of the second-by-second mains voltage level in Bavaria , Germany. This was extremely interesting since the mains voltage was never seen to go above 235VAC, and that over 3 days.
We are suffering failures in our UK based products which appear to correspond to persistently high mains voltage….ie not short switching induced transients or lightning induced transients. We suspect that the mains is simply going up to around 413Vpk (292VAC) , or more, for sustained periods.
We believe that this is entirely possible since the UK mains voltage is not strictly regulated. The UK mains is in fact regulated mostly by probability which says that at any given time of day the amount of loading will be roughly equal to the previous days. As such, the power stations adjust their output throughout the day to kind of give feed-forward regualtion. There are also tap changers in the transformer sub-stations which roughly adjust the turns ratio of the mains transformers to kind-of regulate the mains to a degree.
However, these don’t operate quickly, so therefore the mains in certain areas of UK can easily go up to 292VAC for sustained periods of minutes…do you agree?
Sorry to discuss UK, but i think the mains is more badly deviant in UK than some other countries.
Some time ago, a very kind edaboarder, KlausST sent me some data of the second-by-second mains voltage level in Bavaria , Germany. This was extremely interesting since the mains voltage was never seen to go above 235VAC, and that over 3 days.
We are suffering failures in our UK based products which appear to correspond to persistently high mains voltage….ie not short switching induced transients or lightning induced transients. We suspect that the mains is simply going up to around 413Vpk (292VAC) , or more, for sustained periods.
We believe that this is entirely possible since the UK mains voltage is not strictly regulated. The UK mains is in fact regulated mostly by probability which says that at any given time of day the amount of loading will be roughly equal to the previous days. As such, the power stations adjust their output throughout the day to kind of give feed-forward regualtion. There are also tap changers in the transformer sub-stations which roughly adjust the turns ratio of the mains transformers to kind-of regulate the mains to a degree.
However, these don’t operate quickly, so therefore the mains in certain areas of UK can easily go up to 292VAC for sustained periods of minutes…do you agree?