One 15kw motor Why we used star delta feeder?why not used DOL
please explain in details
- 3 Answers
- 6954 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
why the active power flow of some line is increased when the active power of out is cut ?
dear sir/madam i want to get some knowledge about RRB EXAMINATION(section engineer) 1- what is minimum cut off 2- wht portion is major portion . 3- can any body provide Sample paper. thanks & regards ashish
hi frnds what is meant by harmonics & what is meant by third hormonics,where its will occur ?thank u
CPC cable .PVC \1C....I want to get sure that type is flexible indoor or to be install on trench. please advice .thanx :)
what are the disadvantages in GIS over AIS
i need the details about bhel exam.how to apply for that.please send to my email-id.thenmozhi2k7@gmail.com
why asa method ZPF method is more accurate than ASA method?
advantage and disadvantage of team work?
What are the types of excitation system?
what are the factors to be considered while design the breaker either HT or LT??
To make a basic instrumentation amplifier, it takes A One op-amp with a certain feedback arrangement B Two op-amp and seven resistors C Three op-amps and seven capacitors D Three op-amps and seven resistors
What is the meaning of utility ground and clean ground? How the distribution panel is grounded?
Dears we deal in Chemical are Plate earthing. Kindly call if any requirement and questions. Tech Earth Solutions Mohit Verma 8791071007
We have two parts in generator, electrical & mechanical. how it works?
What is force on parallel conductors ?
