High voltage

[radiohead]

Called out to a problem in a remote rural property, TNCS 100a single phase supply, overhead lines. Testing after sorting the issue my MFT flashed up a voltage of 265v L-N . Thinking the MFT was playing up I re-tested with a multi meter and got the same result. UKPN called and attended later in the day, recorded 252v, pronounced it ok and left. I returned today and got 266v on no less than 3 different meters. Also tested N/E to a temp earth rod and found no significant voltage. Ze within expected tolerance. UKPN attending again hopefully.
Any suggestions as to possible causes?

 

[Pete999]

Called out to a problem in a remote rural property, TNCS 100a single phase supply, overhead lines. Testing after sorting the issue my MFT flashed up a voltage of 265v L-N . Thinking the MFT was playing up I re-tested with a multi meter and got the same result. UKPN called and attended later in the day, recorded 252v, pronounced it ok and left. I returned today and got 266v on no less than 3 different meters. Also tested N/E to a temp earth rod and found no significant voltage. Ze within expected tolerance. UKPN attending again hopefully.
Any suggestions as to possible causes?

HV / LV TX Tapping's goosed!

 

[pc1966]

I wonder if some big load has been shut down somewhere due to lock down and no tap changer action to correct?

 

[Pete999]

I wonder if some big load has been shut down somewhere due to lock down and no tap changer action to correct?

Tap changes settings Goosed?
'

 

[radiohead]

I have to return once UKPN (hopefully) have rectified. I have left the owner with a plugged in meter with instructions to check voltage at regular intervals and record the results and time of day. Obviously UKPN are struggling like everyone at the moment so I suspect its going to be a day or two.

 

[buzzlightyear]

Tap changes settings Goosed

I will put this question to r kid ,he works on the power lines ,he could give the answers .
i would say transformers Mr optimus prime .

 

[radiohead]

Just to update UKPN returned and after much pontificating pronounced the tranny kaput (as expected), I'm told voltage was up to 271v. Apparently and perhaps not surprisingly at the moment a replacement is not available. Property has been taken off the supply and connected to a temporary generator.