What may be happen if neutral and earth is shorted in a
substation
- 3 Answers
- 5298 Views
- Bureau Veritas, I also Faced
- E-Mail Answers
Post New Answer View All Answers
by using pump duty, how we will can calculate the motor duty(KW)? is there any standard or formula.
Hi everyone. Some Generators uses 3-Pole breakers with extra contactors for Neutral. Some uses 4-Pole. Why so? What is the idea behind this? Thanks in advance for the solution. Kr.
In PFI plant one stage capacitor connection is directly connected(with out megnetic contact controll). but why?
Can any body tell gulf interview question for experienced electrical engineer ?
what is the efficiency of thyristor
Name two low frequency oscillators?
what is the difference between ups & inverter
When we use air circuit breaker, it has O/L protection ,time delay SC protection, Instataneous SC protection & ground fault protection. They all have some setting range. But what is the suitable/allowable setting for the above protection which will be safe for the equipment? For example-O/L protection setting have a range of (0.4,0.45,0.5,0.55,0.6,0.65,0.7,0.8,0.9,1.0)xIn Time delay SC protection have a range of (1.25,1.5,2,3,4,6,8,10,12)xIn Time delay setting is 0.02,0.1,0.2,0.3,0.4 Instataneous setting is fixed to 20xIn Gound fault setting is given 100A,300A,600A,900A,1200A This setting are for 2500A ACB. So what will be the basic allowable setting for the above protection? is there any formulae to calculate this<
What is the ratio of Booster transformer?
Connection diagram for KW meter and Kva meter
what is the range of maximum DOL and SDS can be use for pump and fan application
what is mean by descripiency relay? & wht is its ansi code?
Which standard we are following earthing resistance test
What are dcs and plc?
how to set the time in digital timer ?
