Interested to Buy Any Domain ? << Click Here >> for more details...
why do star-delta connection ?
why do not connect any circuit direct connection ?
- 1 Answers
- 4307 Views
- IBM, Sri Biotech, I also Faced
- E-Mail Answers
Answer Posted / pillay
when the motor is started on star only about 60% of the
full voltage is applied across the motor winding. So the
current used is reduced but enough to start the motor with
the load.Once the motor picks up speed the current used is
reduced further, than the connections is changed through the
starer contactors to delta where the full voltage is applied
across the windings to enable the motor to function fully at
its rated voltage.
so the motor is started star and than run delta to reduce
the starting current.
| Is This Answer Correct ? | 7 Yes | 0 No |
Post New Answer View All Answers
how is working bearing heater?
How to calculate size of HT breaker with the help of Amp (current)? Please provide answers with examples.
what is mppt (maximum power point tracking ) and how they used in solar power generation ??? what are the main components used in mppt?????
prove that power consumed in 3 phase delta system is 3 times as compared to 3 phase star system
EXPLIAN THE IMPORTANCE OF POLY PHASE CIRCUIT.
how to decide the panel size like MDB ,SMDB PANEL SIZES
What are the different methodes for calculating the short circuit Current?
Sir,In our company there are 3 caterpillar make(capacity:(1) 3.3KV,2.5MW(2)3.3KV,2.5MW & (3)3.3KV,1.9MW) & 1 deutz make (capacity:11KV,3.8MW)gas engines utilised,all are running in paralell. There are three transformer utilised,(1) 6.25MVA,3.3KV/22KV,Impedence voltage:6.7% used for two generator,both are 2.5MW(2)5.5MVA,3.3KV/22KV,Impedence voltage:7.2% used for one generator of 2.5MW & (3) 5.5MVA,11KV/22KV,Impedence voltage:7.8% used for one generator of 2.5MW.all generator breakers capacity of 1250Amps. Sir,I want the details of fault level calculation of generator,transformer individually & for whole system. If you require any information from me.feel free for contact me sir.pl.send the answer of my question as the earliest as possible.
why a tester wont shock while testing the power in house
what is the difference between interconnection and intraconnections in the circuit diagrams
why is the conservator tank painted white on the transformer
why do we use spark detector inside the slip ring brush compartment 0ona slip ring induction motor?
sir, what is the importance of Fault MVA. how to calculate fault mva of 33kv substation connected by 6.5 km line(single circuit with equal spacing) with 110/11kv transformer in 110kv susbstation.the fault mva on 11 kv bus in 110kv susbstation is 208mva.
if the motor rated speed is 950rpm. how to change the above rated speed? is it possible?
is there any chart showing the suitable cable size according to AMP and length ? for three phase motors
