HT motors are generally connected in star, what will be the
effect if we connect HT motor in Delta?
Answer Posted / iamdon
star coonection reduces the voltage appering across each
phase by root 3 times.It means we need to design the
insulation for lower voltage which is economical.Also due
to reduced voltage reduced currrent will flow through
winding so less loss so less heating of winding so less
cooling requirement for keep the temperature rise within
limit.
All these beauty will lost in delta connection.So delta is
not preferred..
| Is This Answer Correct ? | 42 Yes | 3 No |
Post New Answer View All Answers
What are the various types of BUSBAR Schemes? explain each
Do Phase angle measurement have any application in freq/harmonics measurement? If so how?
what is the difference between interconnection and intraconnections in the circuit diagrams
What is the meaning of dedicated earthing?
In radial network the source is fed from 1 end both ends at central
why ss stablity limit is more transient stablity limit?
Define transfer function?
oltc of a transformer, how it works? and what are the equipment consist of describe briefly?
if i am in front of transmission line how to know that current direction without any equipment
Dear friends I want to design busbar for1600 kva transformer(i.e2100 amps) what are all the factors to be considered before selectinga busbar what are all the standard sizes of busbars what is the formula for finding current of copper and aluminium busbar
differnce between single acting and double acting solenoid valves
formula for calculation of switchgears(i.e. contactor, fuse, cb, relay etc.), if load current is given?
how to test and calculat the head and discharge in borewell compressor
Is a contactor (or master relay) required between incoming lines and a VFD? The question goes to safety. If a contactor were used before the VFD and an e-stop engaged then the motor will coast to a stop (i.e. VFD loses power) instead of stopping much faster if the VFD braking fucntion were used. It would make more sense to keep power on the VFD.
Calculate torque developed by the 3-phase, 5 H.P., 4 pole induction motor runs at 1500 rpm A 23 N-m B 21 N-m C 10 N-m D 0 N-m