Customer with serious over /under voltage problems .Local POCO has been less than helpful.Customer wants me to try to solve the problem.This is a residence-600 amp single phase service (3) 200 amp main breakers) 50KW generator w/auto transfer switch.The problem is the incoming voltage (240)gets out of balance example:(phase a =180 vac to ground, phase b =60 vac to ground. We know its a POCO problem, because when the customer has problems, others within a 2 block area have the same problem.I am considering installing a voltage relay with over/under voltage adjustments connected to a capacitor trip device connected to shunt trip main breakers.Has anyone here tried anything like this?
Opinions welcomed.
Sir, don't waste your time or the customer's money rigging up any fancy stuff.
DEMAND that the POCO get their trouble guys out to find that open neutral before your client's house and the others go up in flames...you may also want to have the others experiencing problems also jump on the POCO about it.
This situation is very dangerous..let us know the outcome...
