for selection of transformer we will considering 5 to 6
times of starting current of higher rating motor connected
to secondary side. according to process wise we will start
the motors gradually suppose if we will start 15 to 20
motors at a time wat will happen?
Answer Posted / wareagle
If you start all of the motors at the same time then you
will have the sum of the lock rotor amps time the number of
motors occurring at the same time. You may trip the primary
transformer breaker.
Is This Answer Correct ? | 4 Yes | 0 No |
Post New Answer View All Answers
What is the need for a controller?
What do you mean by lighting transformer?
sir, 3phase induction motor takes different pf and different KW in three phase while running,explain reason
how to calculate energy of 3-phase motor?
It is desired to flood light the front of a building 42 meters wide and 16 meters hig.Projectors of 30 degree beam spread and 1000 watt lamps giving 20 lumen/watt are availabl.If the desired level of illumination is 75 lumen/m and show a suitable scheme.Assume the cofficient of utilization, deprecitation factor and waste light factor are 0.4, 13 and 1.2 respectively.
Define open loop control system.
132/66kv sub-station procation ?
What are the advantages of thermal power plant?
for 4 MVA , 33K.V/6.6K.V transformer. secondary side the connected load is 3000H.P. What is the rating of capacitor bank to be insttaled.
in indoor type circuit breakers why only the corner breaker trips specially during cold season. What is the reason.
Why GRR starts from 60% of motor speed why not less than 60%?
what is the IEC standard for Power Cable installation in onshore (like in direct buried ground or above groung)
FEINGING DECREASES THE FLUX DENSITY IN THE AIR GAP. HOW?
A 3 phase transformer's (Y-Y) Y and B phase is (Y and B connection not broken) broken from neutral and R and Nutral connection is ok, what will be the relay tripping and why
What is the disadvantage in proportional controller?