Back-UPS RS 1500 (BR-1500-IN)

[Anonymous user]

Hello all,
Where I live we experience power cuts but the apartment complex has a back-up generator. Usually we lose power for a few seconds till the diesel generator (DG) kicks in. Similarly when Electricity Board (EB) power supply resumes we lose power for a few seconds before power resumes. To maintain power through these drops I recently purchased a RS 1500 UPS. Usually power supply cuts tend to be during the day when nobody is at home. I recently began leaving the UPS connected to the wall socket, UPS not switched on. I have noticed over past week when doing so the RCD (GFCI, RCCB) in the main breaker panel trips out taking power for the entire house out. Over the weekend when I was home I noticed this was occurring when the EB power would be resuming after a dropout. This does not occur when DG power starts up. It occurs during brief power drop outs as well eg. power cut for like 1 min DG not turned on EB resuming causes RCD trip. When a trip occurs I simply need to flip the main RCD switch and everything works normally.
On another but possibly related note; since I have started using the UPS my power consumption has significantly increased (almost doubled ~85% increase)
Has anyone else experience a similar problem? Is there something wrong with my UPS?
What is the usual power consumption for this model when battery is fully charged with AC power on?(i.e not taking into account load on it just UPS consumption). About how much power does the UPS consume when charging? Any help,advice and information would be greatly appreciated.
P.S. RCD is a four pole 63 Amp, 30mA. No individual MCBs tripping only main RCD at EB power resumuption.
Thanks
Ishan

[Anonymous user · Accepted solution]

Well, UPS does need to replenish its battery. And on a similar note, I did notice significant increase in Power bills when my Inverter battery was dying. The battery would take forever to charge and would heat up a lot.

Message was edited by: rahuljawale