my master UPS showing battery low alarm,which is not getting reset,battery test button is also not working.but battery voltage is 430v tested by multimeter & 8 Amps load is on master UPS.few days back same problem came to my SLAVE UPS.but we done battery test & low battery alrm went away.what...
just after synchronizing our power plant's turbo generator with grid when load gradually incresed & we satarted exporting,PF was near 0.86 lag & everyting seemed stabilize, suddenly we noticed sharp fall in generator power factor & rise in generator amps.we have steam turbine,brushless...
we have BOILER FEED PUMP MOTOR OF 300kw HT(3.3kV)directly connected to VCB.Recently after overhauling we are encountering an abnormal humming noise from the motor.Temp of DE & NDE side bearing is very normal as both side bearing has been changed & sleeving done at both side shied bearing...
I have a Siemens micro-master 440 vfd to control a 7.5 kw,1400 rpm induction motor.now the problem is after running for few days it stops automatically without showing any fault & doesn't accept start command for next few hours or so until i clean it with air.I have replaced the drive two...
