Interested to Buy Any Domain ? << Click Here >> for more details...
i am using star-delta connections with reverse/forward
direction motion of the 75hp induction motor.What should be
the ratings of Main,Delta and Star contactors and why?
- 1 Answers
- 5172 Views
- I also Faced
- E-Mail Answers
Answer Posted / jakeer
well you are using 75 HP(55KW) motor.its flc is 96amps at 433 volts.
1.Main contactor:200amps rating.
2.Delta:200amps.
3.star; 125amps.
| Is This Answer Correct ? | 7 Yes | 0 No |
Post New Answer View All Answers
what is the formula for computing cable tray size & capacity
please tell me, how i clear the objective test? when i studied form the one book after i solved the objective ,that time i solved that qes. but if i tried solve objective form the other book then i could not solved these que.
what is the voltage regulation for unity and zero power factor?
why the colour of insultor stack , petticoat is brown. Is it has some technical reason.
What is method of calculating the fault current for a MDB, 50KW, 3PH, 415V, 50HZ?
Suppose a 3 phase, 2 pole, 440V induction motor is driving a flywheel of 600mm diameter, 150kg mass. By using v-belt and pulley, the speed is increased to 4500 RPM. What will be the effect on motor current?
what is transient stability analysis means?
What happen when change order of CT in GIS feeder?
Sir, I have applied for the of Assistant.engineer of NPDCL. please send me all AP TRANSCO AND JENCO solved papers of previous exams . I requested send me the papers to my id as soon as possible (rajanikanth_peddi@yahoo.co.in) (This is very urgent) Thank You,
ROC converges if poles and zeros lie inside a. Origion b. Z=1
what is the use of vcb & isolator in substation?
Why is back emf used for a DC motor? Highlight its significance.
what is R Core Transformer. how it differs from normal transformers. dont search in net and post the answer.
What is state space method ? Why its used ? Can it applicable on linear, non-linear, 1st order, higher order, homogeneous, non-homogeneous, open-loop , closed loops , stable & unstable systems ?
are there rmu for 3 transformer?
