How we can make sure cable size of LT cable without any
parameter.
Post New Answer View All Answers
Difference between On Line capacitor and Station Type capacitor.
How to calculate the sag of OPGW during stringing???
which types of relay used in acb and vcb?
Is a d.c.compound motor is use as a booster? how?
What is the function of the circuit breaker failure relay?
100 MVA 3-phase alternator with earthed neutral has a reactance of 5 ohms per phase. what will be the fault MVA of generator.
How can you calculate the size of the down conductor cable for the lightning protection system. Is 70mm2 cable can replace 95mm 2 bare copper cable when the copper tape size is 25Wx3 thk mm.
how does the rotating m.m.f is produced in the 3-phase induction motor and how the poles are created in 3-phase induction motor ?
what is the effect of change in supply frequency on load angle of synchronous motor,all other parameters remaining same?
What is different between Circuit breaker and Isolater?
Hello Guys !! i want to rrb section engineer electrical(signal) previous model papers? any body help me?
The simple way of finding the leakage quantity and % in compressed air distribution system
We need to current density & short circuit calculation at 65kA for aluminium & copper busbar.
what kind of technical test that i need to learn because i have an interview tomorrow.. please someone help me..
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<