I am experiencing a problem with my UPS system from a couple of days. In our area, the voltage rises very high mostly at night. I know that the voltage is high by looking at the small LCD on my Homage UPS. It shows the input and output voltages.
Now I think there is some high voltage protection system in my UPS that whenever the voltage rises above 265 volts, the UPS cuts off from main line (WAPDA) and comes in backup mode. Backup mode normally kicks in when there is no electricity and UPS is taking power from battery to run home appliances.
Now although there is no load shedding but since the voltage is greater than 265 volts, the UPS does not come out of backup mode and hence battery keeps discharging. After a while UPS starts beeping due to battery discharge and the system shuts off.
I am attaching the pic below.
[sorry the picture is not uploading here]
In this picture, 285 volts is the input (WAPDA), 227 volts is the output of UPS for home appliances and the UPS is on Backup mode, means that it is not charging the battery, rather the battery is being discharged as it is giving power to home appliances.
Now what should I do in such scenario? Should I use a voltage stabilizer between UPS and WAPDA? Will it keep the voltage level in limits?