How many battery required for an 3kva online ups with 3 hrs back up with usage of 3 fans,3tube lights
my question is that....few days ago i had installed a three phase motor starter for an electric saw.the motor will run and make the hydraulic pressure which will be goes to pressure cylender by up and down lever.two number of limitswitches are also installed on cylinder for safety of motor.now when the arm of cylinder reaches to the upper or lower limit it will cut the motor's line.and motor will be stop.now wana know that what will i do that motor runs continue after the limitswitch cut it down but it shold not be made any pressure.pls answer me in brief.
How to convert KW to KVA or KVAR OR kvar/kva to kw?
WHAT IS DIFFRENCE BETWEEN 3 PHASHE AND 1 PHASHE
Instead of single phase(220), if we apply Phase to phase (R&Y)supply (eg: for lighting fixture). what will be the power formula?
in transformer which grade oil will use?
What is the difference between earth fault and restricted earth fault protection?
What are the different methods of improving power factor,especially in Wind Sector
for compensate 315mh inductance ,how many capaciance required?
We need to current density & short circuit calculation at 65kA for aluminium & copper busbar.
Why dry type cast resin transformers tap link blast in HV side while power shut down times on load?
will a bulb glow connected to two phases of a delta connection?
where can the transformer having vector group Yny0 be used??