what r the earthing required for commissioning of D.G set?
Answer Posted / arvind kumar
total fore earthing required for D G set . Tow earthing
for body and tow earthing for Neutral.And earthing
rasistance for G I 3 ohm and for copper less than 1
ohm
Mains purpach to earthing valancing voltage
| Is This Answer Correct ? | 6 Yes | 0 No |
Post New Answer View All Answers
State the methods of improving power factor?
how to find three phase complex power in per unit and MVA?
what is mind in cable
71ohm,111ohm,95ohm,179ohm in calculate the total ohm in series circuit
What types of high speed CMOS circuits have you designed?
why ten delta testing is carried out on power transformer
1. what is usage for power factor in industries?? 2.why we need to monitor power factor??
what is the eight bit unit?
what is the difference between electrical choke and electronic choke?
Witch do depand of Power factor and theory of power factor?
what is per unit calculation?looking for simple and strong explanation thk u
We have drive feeding an output contactor for a 5000 hp motor @ 5kV application. The motor FLA is 629amps x 1.25% service factor = 786.25 amps The cable that we current have in place between the drive and the output contactor is 350kcmil- MV-105 (parallel cables). Per the NEC table 310.60 (C) (69). This show the cable ampacity is at 615 amps per cable for a rating of 1230 amps. We have derated the cable for the cable tray and the multiple cables application and our calculations show that after the correction factor factor we are at 922amps. 1230 amps x .75% correction factor factor = 922.5 amps. The customer is driving us to then use another safety factor of .25% off of the already derated cable. Can you please provide a longhand calculation for your solution on this application?
What is the meaning of Insulation H for transformers????
why co incidence factor considered in transformer sizing?
how harmonics generated in induction furnance? how minimise it?