Interested to Buy Any Domain ? << Click Here >> for more details...
What are the difference between C-Curve and D-Curve for
MCB's.
- 17 Answers
- 191730 Views
- ABB, DLF, Essar, GK companies, Nissi Engineering Solution, I also Faced
- E-Mail Answers
Answer Posted / nimda
The magnetic trip for a B-curve MCB will not operate below 5
times rated thermal current but will surely operate
instantaneously above 10 times rated thermal current.
The magnetic trip for a D-curve MCB is will not operate
below 10 times rated thermal current but will surely operate
instantaneously above 20 times rated thermal current.
The choice between B-curve and C-curve depends on the loads
ratio between load inrush current and load running steady
state current.
For the same running load current if the cable is long then
a D-type MCB may need a larger cable cross sectional area,
compared to a C-type MCB, just to ensure that sufficient
fault current always is available for operation of the
instantaneous magnetic trip.
| Is This Answer Correct ? | 31 Yes | 8 No |
Post New Answer View All Answers
howmany electrician should maintain for a 1000 kva used plant... in kerala..
what is cause of static electricity? I experience shock when i touch metal equipment in a room ,furher check shows earth leakage showing 80ma at the DB near to the 400 MCCB?
what is the breaking capacity and making capacity of circuit breaker and how
what is R Core Transformer. how it differs from normal transformers. dont search in net and post the answer.
thyristor controlled APFC panel design parameter?
list of tests to be carried out at manufacturers end while purchasing a step up transformer of 11kv to 66kv ,2MVa Capacity.
List the time domain specifications.
Good morning: I'm looking for some informations about the OLTC or the LTC: I wont to know what the function of the tie-resistor in during the operation of reversing/coarse operation Cordially
why they were using TRIAC instead relay in some controllers and what is the advantages.
Name a govt approved university which have 100% online engineering course.
Is there possible to Test Transformer for Overfluxing Capability. Or is there any firm who does Overfluxing Test on Transformer?
Hi, This is Laila. I am selected for syndicate bank interview. Could you please share your views and the questions asked if you have faced the interview My email id is laila_honey09@yahoo.com Please send as fast as u can.Thank You Thanks... Laila.
Why we are going for converter transformers for DC drives application instead of distribution transformer?
How to synchoronize the generator (with gcb,GT) to grid????? ????? from Grid iam getting power (rated 400kv/20kv) through GT and its goes to UAT.,,ST.,, now my generator(rated 20kv ) ready.,, now iam closing my GCB.,, in GT iam suddenly giving 20kv on that Gt.,, what will happend
describe the constructional features of an auto transformer and its principle operation
