What is the d/f between DOL & star delta starter & automatic
star delta starter?
Answer Posted / rajendra mallick
In a DOL starter motor terminals is directly connected to
starter such that initially a very high starting current is
feed to drive the motor.Dol starter is used for small
motors below 5hp because of high starting current may
damage motor winding. Dol starter using for large motor
using star delta connection,first motor run on star
connection mode upto 80% which provide low starting current
and low torque initally and after getting maximum torgue
motor operates on delta mode with high torgue.
| Is This Answer Correct ? | 25 Yes | 6 No |
Post New Answer View All Answers
can we conduct the swineburne's test on a dc series motor? why?
Which contains in POLE ASSEMBLY of a 11KV Kirloskar-make SF6 (Model No-FP620A12)? Will u clarify with drawing?
how we calculate torque ? how we improve it ?where torque will either motor or generator ?
Dg pf .71 i am improve pf 0.80 what capacitor connected in dg how?
WHY EXCITER PHASE SEQUENCE ARE OPPOSITE THAN STATOR SUPPLY PHASE SEQUENCE IN SYNCHRONOUS MOTOR >
how dia of wire and angles are calculated for overhead shielding wire to protect substation equipment from lightening strokes???
Is any AC drive(VFD) had a feature of DC injection braking? if available please mention the detail. i.e drive can supply braking torque when the motor in idle state.
how can get electrical "c" licence.i am complited in DEEE.PASSING YEAR OF 1993.WORKING IN PVT COCERN LT LINE.PLEASE ADVISE ME .CELL NO 9994786021
What is the formula to calculate the rating of a three phase air circuit breaker
While performing stability test of differintial cts how to know the voltage and current on both side of the transformer?
For high frequency application we use which transformer?
what does a k rating in a transformer means?
How to calibrate or test an LT Air Circuit breaker 440 volts, 35 KA, 800 Amps ?
hi I have done 3 yrs diploma in electrical engg after 10+2. I have 16 years of work experience into design proposals sales and engg application development in LV/MV swithcgear and sub station automation field. I want to apply for immigration to new zealand but I am not sure whether I qualify or not since I dont have a degree. Can anyone advice? Thanks Riz
is this the formula of building wiring to get the main breaker.Watts/volts*.8%+higher motor*(25%)=ampere. yes or no or send the correct formula for building wiring.