Interested to Buy Any Domain ? << Click Here >> for more details...
What is a liquid resistance starter?where it is used??
- 15 Answers
- 91153 Views
- Mecon, I also Faced
- E-Mail Answers
Answer Posted / anurag pattanayak
Since in a Slip Ring Induction Motor, the Rotor resistance is low, this can cause very high current and low starting torque.SO by externally adding resistance , we increase the rotor resistance and thus decrease the starting current and increase the starting torque. ie Pull out torque can be achieved at very low RPM.
An LRSS is nothing but a solution of Caustic Soda. which is connected in series with rotor.
On starting, the LRSS resistance is added to rotor resistance ( LRSS In condition)
...as slowly motor starts to gain speed ..the LRSS contacts move, there by reducing the resistance between its contacts and thus the effective resistances decreases.
When the motor has gained full speed, LRSS is cut out by usually using a shorting contactor.
thus a slip ring induction motor runs a cage motor at full speed.
| Is This Answer Correct ? | 90 Yes | 5 No |
Post New Answer View All Answers
How to design the no. of ceiling fans required in 5mtr X 10 mtr X 3 Mtr hight room?
how to make an earthing certificate
critically criticize the application of ring main unit in power system
what is mean by parallel operation of permanent magnet generators
What are the symptoms of a bad PG card of a drive (inverter) esp. of Yaskawa Ac Drives (inverters) G7 ?
The 3 phase 400 hp 440 volt slip ring induction motor do not take one phase amps why ? The motor is running good condition
What is the basis for framing the rules of block diagram reduction technique?
How many types of colling system it trformers?
bsec exam syllabus (mis)
How can I calculate per unit (KWH) fuel (Gas/ Diesel both) consumption 1MW unit?
What is dc current source? Differentiate between ideal and non ideal current sources?
In motors how many types of cooling systems were used?
Why front mounted CT polarities are always towards breaker?
how to find motors H.P. whout any rating? (only give you a motor and multimeter)
how is positive, negative, zero sequence is happen.. how is effect on 3 phase system
