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Lights flicker irregularly since storm

41K views 10 replies 6 participants last post by  frenchelectrican  
I will advise ya to call the POCO to check out their side somecase it can get loosen up and cause the lights to fliker like you descibing so they can come out any time 24/7 useally without any charge to come out.

Once that sorted out then we will go from there.

Merci.
Marc
 
If a not so dry branch or a squirrel or other object should short circuit some high tension or medium tension lines, this may drop the voltage almost to zero causing a momentary outage on those lines until the object burns completely through. Also there are arc fault circuit interrupters at substations that will kill the power, wait a few seconds for any suspected arc short circuits to die down, then reconnect the power. Sometimes what was the short circuit will not strike another arc. If the arc resumes then the AFCI trips again, and after so many tries the AFCI will not reset and the power company must send someone out to survey the lines, find the fault, manually remove it, and manually reset the AFCI.
The POCO verison of AFCI is what they called Recloser it function simauir to AFCI but it have timer build in and when it trip at first they will stay off for few seconds and reclose it and if still keep tripping the recloser it will kick open one more time but much longer delay and reclose and if still tripping it then it will stay open until the POCO clear up the fault then manually reset the recloser.

The recloser is basically modifed medum / high voltage oil circuit breaker with current transfomer inside and POCO can set the trip level as need to and they will come in few differnt size to suit it needs.

I have work on that system before so I am famuair with it.

Merci.
Marc