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I try to check the three phase voltage in multimeter, in 125A isolator switch incommer. first i touch R phase, and then i touch Y phase using multimeter, the moment i touched, it blasts and that moment i got blindness. multimeter selector position is correct(750V AC MODE AND RED PROBE WASS IN v AND BLACK PROBE WASS IN COM. MODE. COULD ANYBODY GIVE ANSWER FOR THIS TO AVOID FURTHER ACCIDENTS PLEASE?
2 5587how i chosse capacitor bank if my energy meter is 48 kvr? tell me capacitor bank chossen formula?
Bhel,
2329how i chosse capacitor bank if my energy meter is 48 kvr? tell me capacitor bank chossen formula?
1 6764What will be the fault current of any system when its generation is 10% of BASE generation( FUll Load )?Will is 10% or the same as full base calculation?
1909HELLO EVERYONE, I RECENTLY HAVE FOUND ONE PROBLEM, I WAS TAKING NO LOAD TRIAL OF AN HT MOTOR 920 MOTOR , 1440 RPM , 6.6 KV, WITH AUTO TRANSFORMER. AT 450 V, LOAD WAS 40 AMP AND SPEED WAS 250 RPM. BUT AS WE INCREASE VOLTAGE FROM 450 TO 480V, LOAD BECOME 41 AND SPEED REDUCED TO SOME RPM . SO WHICH PHENOMENON ACTED HERE FOR REDUCING SPEED.?? AND IS IT HAPPENING ALWAYS OR IT IS RARE? I ALSO HAVE FACED SUCH PROBLEM WITH FEW LT MOTOR ALSO.
1962Post New Electrical Engineering Questions
In Dyn11 power transformer if any one of the 3 phases connected to earth in star connected side then please explain effect of the current flow in delta connected side of transformer.(In this case if one phase is shorted to ground in star connected side then we observe the current flow in two phases only not three phases in delta connected primary side. Please explain why it is so?)
What does the kvar means?
what is difference between 9kv 5ka surge arrester and 9kv 10ka surge arrester.
Why we use auxillary relay ? what is function of differential relay, directional o/c relay?
What is q factor?
what is meant by rotating magnetic filed
How does a tertiary winding filter harmonic(espcially 3rd one) from entering into load system?
How to calculate pitch, gauge of winding wire, and No. of turns for 30HP, 3 phase, 4 poles 50Hz, 380V induction motors
what is the difference between dry and wet type of 132kV terminations. which one is durable
sir plz send some previous year questions of jspl.
formula for calculation of switchgears(i.e. contactor, fuse, cb, relay etc.), if load current is given?
hi,every one, i have to write the search paper on "performance policy optimization" of NGN (next generation networks). i need the material on this topic. can any body help me. please tell me any useful site where the good material is available and name of any reference book. it should be a great help for me.
what is the ground fault relay,which purpose it will be use,clearly tell me plz
From reading, Under voltage relay used also as phase sequence relay now, Why I use under voltage and phase sequence relay in the same circuit (ATS)?
some basic standard questions on transformer.
