Interested to Buy Any Domain ? << Click Here >> for more details...
One 15kw motor Why we used star delta feeder?why not used DOL
please explain in details
- 3 Answers
- 9143 Views
- BMM Ispat, GSK, Pitti Laminations, I also Faced
- E-Mail Answers
Answer Posted / kj
The star delta starter limits the starting current of the
motor by reducing the voltage across each winding. In star
the voltage is equivalent to the phase to neutral of the
power supply. In delta the phase to phase voltage is
applied across the windings.
With a DOL starter the phase to phase voltage is applied
across the windings. The starting current can be in excess
of 7 times the full load current.
The main reason for using star delta starters is that the
power supply system to the motor does not have to support
the high current needed for DOL starting. If the power
supply is not able to supply the current a voltage dip will
occur affecting all other users on the supply.
| Is This Answer Correct ? | 11 Yes | 1 No |
Post New Answer View All Answers
what types of cable used in underground coal mining?
hi frnds can any one help me ? plz send me placement paper of IOCL of Electrical streem .... plz send ....its urgent....
What is power factor why we should maintain the power factor unless what will happen
what is the terminal voltage of dc series generator running at rated speed at no load?
How to control motor gearbox speed and friquency? If length of cable and dia given, how to measure the voltage drop?
How many energy meters can be connected on a 15VA Voltage transformer. please send a calculation sheet.
what is the maximim current drawn by 1 phase and three phase welding machine
why do we need to use 3c+3e cable, normally i select only 3c+e cable and i think it is enough. pls explain the usefull of 3e cable ( in this project the earthing system is well done)
Hello to all, Please someone can send me HPCL ELECTRICAL Engg. Sample papers to me? Its urjent....my email address is.... raviasiapacific@gmail.com
What is steady state response?
what is the difference between RMS & TRUE RMS VOLTAGE
Why the efficiency of a three-phase induction is the motor is less than that of a three-phase transformer?
Explain bypass capacitor?
i want to know that what is the eligibility critaria for ongc exam?
WHTA IS LIMT OF LEAKGE CURRENT OF 11 KV 1 CORE 1000SQ.MM. XLPE CABLE.LOAD ON CABLE IS AROUND 600AMP .LENGTH 500 MTRS.
