Interested to Buy Any Domain ? << Click Here >> for more details...
How many current ratings of MCB's are in the market?
e.g: 1A, 2A, .......upto.
- 4 Answers
- 19858 Views
- I also Faced
- E-Mail Answers
Answer Posted / shahnawaz akhter
mcb use upto 63A AFTR 63A MCCB CAN BE USE.
| Is This Answer Correct ? | 15 Yes | 8 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?
What is ideal IR values for ground and neutral.
What was your role in the silicon evaluation/product ramp? What tools did you use?
What is the rating of circuit breaker needed for 300 KVA load in 33 KV supply line in a transformer of 33 KV / 415 Volt ?
Mr. mohh sahid m not satisfied for ur answer to the que weather the size of transformer increases or decreases withchange in fr for more detail go to the answer given by me
what is the defination of Cable database? What are the points are considered while preparing cable database? Is there any sample available for cable database?
Why lose 1 phase voltage in 33kv to 415v stepdown transformer
electromechanical relay type identification example : type=tjmh t-stants for j- m- h-
Dear sir, my knowledge about cable size determination is limited. Though I read examples I could not calculate the Cable size required for electric driven pump 40 KW, 380 Volt, 50 HZ, 50 meter from transformer and it is three phase star delta starting. Please help as there is no one in my surroundings to help.
sir i have a car stereo system and there is jack on him so can u tell me a way to find out their power terminals on the jack or on the circuit board"
.php|
what is the principle of the single phase energy meter? and,what is the advantages and disadvantages of single phase energy meter?
How to do cable earhing? whether by grounding Armour to ground or by running extra G.I wire along with cable? which one is preferred mostly amoung them? If the second one is more preferable how many GI wires to be run along with cable (1 or 2)?
why don't we use the generator as a motor? and what will happen?
what is servo motor and how it works?
