How the starter control the starting current in three
phase AC Motor?(In DC apply the reistance).
Answer Posted / venu
Mainly starters are used to reduse the starting
current.normally we will use the star delta starter for the
above 7.5HP.
as per the electrical formula.
motor will start in star first
since IL = IPh
coz we have to equilize the starting current
then its go to delta
Since VL= Vph
Finally
In star -Current equal
In Delta- Voltage equal
that how the starter will control the startingcurrent
Is This Answer Correct ? | 4 Yes | 2 No |
Post New Answer View All Answers
what are the standard IR values should be of R-E, Y-E, B-E, R-Y, Y-B, B-R of VCB in closed condition and in open condition for 500KVA & 1000KVA transformers. and what is the acceptable range when tested by 5000V megger.
does buccholz in a transformer use batteries
What is the difference between single point and double point bonding. please kindly detail about bonding of cables.
what about GD square and its important for motor design?
While testing LA mast,What are the parameter limits ?
Write down the name of 2 lady Bir Pratin of Bangladesh
How to measure the Harmonic Distortion of UPS ie THD?
what rectifiers is and what are the types of rectifiers?
Why arc quenching is used in Diode ?
why the name trunking bus PT
why the rotor current becomes in steady state during high slip region? please verify with equations.
WHAT ARE THE DISADTAGES OF SINGLE-WIRE-EARTH-RETURN SYSTEM USED FOR RURAL ELECTRIFICATION?
Meter p.t. ratio= 3×230/400 , c.t.ratio = 3×1 (2) A what is m.f.
If we have use two power cable for incomer, that time how many use cbct for earth leakage protection? 1 or 2 if 1 way? If 2 way?
what is the function of Moulded case circuit breaker, why it is called Moulded?