Recently, our facility had an event, where the station power dipped for approx. 50 cycles. At the very same time, with the battery chargers feeling this voltage dip, our 130v dc battery bank voltage dipped to 78 volts for 10 cycles, then recovered fully.At the time, the batteries had a 15 amp load. The batteries have just had there regular maintenance and testing, and everything seemed fine. They were not however load tested, which is not part of our companies SOP.
Would a 10 cycle dip be normal? These are simple flooded lead acid cells
HP
