Answer / felixraj

earth fault protection

Answer / satish panchal

Residual voltage & residual current used in Directional
Over current and directional earth fault protection. also
used in dist protection.

Answer / darshan thakur

Resudal current is used for unbalance protection.& also for
earh fault protection we are used open delata connection of
potential transformer.

Answer / pooh

Surge arrestor

Answer / magesh

yes

what is the difference between CVT & PT?

2 Answers  

what is the difference between ac ground and dc ground.. In my project iam using both ac and dc supply.. can both the grounds or the return paths be connected??

1 Answers  

What is VVVF Drive ?

3 Answers  

Why capacitor blocks DC current?

2 Answers  

How to specific gravity of battery will check, i didnt saw any hydrometer. & say me how to dip into the battery what are the specifications are given in the hydrometer?

1 Answers  

How To Convert Apparent Into Real Power Without Knowing Reactive Power?

0 Answers  

how we select the mva rating of the circuit breakers?

1 Answers  

Damping resistor provided in open delta (tartiary) winding of a measuring PT at the incoming of a MV inverter drive panel is getting heated up. Can any body explain the reasons and suggest the remedy?

0 Answers   Danieli,

What happens if we give the supply to the rotor of induction motor and make its terminal shorted?

2 Answers  

how to calculate the knee point voltage of current transformer?

2 Answers  

which motor will u use in refinaries?

1 Answers   IOCL,

What is substation?

5 Answers   KSEB, Neolite,