What should be value of Circuit breaker operating time and
tripping time?
- 5 Answers
- 13075 Views
- I also Faced
- E-Mail Answers
Answer Posted / vijay mali
Generally the operating time of the circuit breakers
depends on the designer. The opening time of the breaker
should be less than the closing of the breaker. Opening
time should be less than or equal to 20msec (preferrable).
Closing time depends but preferrably less than 90msec
| Is This Answer Correct ? | 1 Yes | 2 No |
Post New Answer View All Answers
if there are six generators (3 gas CATT, one Jenbacher o1 MW each, and two nos Diesel 01 no 01 mw other 0.65mw EDGs ( say), 3 CAtt gas set have identical pole pitch,01mw EDG and Jenbacher gas Set have different pole pitch, how their power connection can be done to connect a common bus bar during installation. in short, how different pole pitched generators power connection can be done to connect a common busbar system through generators incomer ACBs.
what is inverter and converter
describe the Tranformer testing procedure
write a c++ code that receives an integer number and display the sum of the number and its revers integer?
how is the magnetic current test is different in delta-star and delta delta transformer.
How each of the following losses occur in d.c machines (i) copper (2)core (3) windage (4)friction please help me
ratings of lightning arrester
As we know diode work on both negative and positive but converting ac into DC we have to given a/c from negative of diode or positive side.please give me answer.
Explain dc generator with its types?
how we calculate torque ? how we improve it ?where torque will either motor or generator ?
why we permissive overreach in distance protection.where it is applicable to use in long r short lines
3 shows a 415 V, 3-phase generator supplying a 3-phase 415/110 V transformer. Draw the individual and combined impedance diagrams to a base of 10 kVA. Determine the system fault kVA and the fault currents at the 415 V and 110 V busbars for short circuit faults on the transformer input or output terminals. Work in p.u. values of impedances.
In AC if the direction of current keeps reversing every half cycle, how does it propogate through the transmission lines?
WHY DO VOLTAGE TRANSFORMERS FAIL DURING EARTH FAULT IN THE DELTA CONNECTED 6.6KV ELECTRICAL SYSTEM
What is the main cause of magnetism?
