why 3 phase induction motor only need starter ? why not
other motors need starter ?(like synchronous motor,single
phase induction motors & their types) ?
Answer Posted / balakrishna shetty
When 3phase induction motor is directly connected to the supply, it takes heavy current at starting ( 5 to 7 Times the full load current ) and creates a large voltage drop in the line.Due to this
(a). Motor winding May be damaged.
(b) Neighbouring consumers are inconvenienced.
To avoid this starters are used.
| Is This Answer Correct ? | 4 Yes | 0 No |
Post New Answer View All Answers
I HAVE A INCOMING 100A MCCB TPN 25KA, CABLE LENGHT OF 80M 70MM CABLE SIZE FROM MAIN SUBBOARD TO NEW DB.BASE ON THE FAULT LEVEL SETTING OF 45KA.I WOULD LIKE TO FIND OUT 25KA ENOUGH KA. APPRECIATE IF SOMEBODY CAN ASSIST ME WITH FORMULA FOR THIS. FRM: JEFF
What is George phenomena to start the synchronus machine?
What will happened if the neutral of the (star connected secondry) Xformer disconnected? (if its Above KVA rated one)
CPC cable .PVC \1C....I want to get sure that type is flexible indoor or to be install on trench. please advice .thanx :)
Leakage current,un balance current which relay using for high voltage transmission?
Why High voltage are generate noise ?
how to calculate the breaking capacity of different breakers.
How to test lightning Arrester?
why wire sizes are 3/29 or 7/29 and why not wire sizes are 2/29 or 6/29?
What are the no-load losses for the 11000/415V transformer with the following rated capacity? 1.1500 kVA 2. 2000 kVA 3. 2500 kVA 4. 3000 kVA
Why i receive the GCU fault in my DG Sychronization panel . what all the factors considered for this fault .
our industries ht line so power fluctation(once drop of power please rectify causes
We have 250 KW x 2 motors, which are load from 25% to 100% varying load in every minute , so how can we compansate the power factor. pl give your opinions on the above subject.
advantage and disadvantage of team work?
what is static frequency converter?what is the function...of sfc...?