I want to know in body earthing which material can be use
either copper plate or GI plate please guide us which is
best option.
Answer Posted / balu
Gi plate is the correct option because it was anti corrosive material and it will be cheaper than copper
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
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?
In Dyn11 power transformer if any one of the 3 phases connected to earth in star connected side then please explain effect of the current flow in delta connected side of transformer.(In this case if one phase is shorted to ground in star connected side then we observe the current flow in two phases only not three phases in delta connected primary side. Please explain why it is so?)
What is evaporator & condencer & compressor
how to find the resistance and gap volatage of the diode??
Why i receive the GCU fault in my DG Sychronization panel . what all the factors considered for this fault .
what is the difference b/w UHVDC and HVDC(LIGHT)?
sir, i'm preparing for hpcl exam officer trainee pls tell me how the exam ques paper pls pls
What is the tube exial fan?
what is harmonics? what are the factors it will depend upon
What are the necessary solutions needed to be carried out on a malfunctioned earthing mechanism of a VACUUM CIRCUIT BREAKER.(TAMCO)
The power supplied to a 50mH inductor from a 120V, 60Hz source will be
What the formula for calculating no.of earthings & size of earth strip for 100mX90m shop.
How to calculate the fuse rating depend upon the DC circuit?
how is positive, negative, zero sequence is happen.. how is effect on 3 phase system
What is the Nyquist criterion regarding control systems?