lllg,llg,ll,lg,lll which fault is severe and why?

Answer Posted / harshal nemade

as symmetrical fault that is L-L-L is more dangerous. but if we calculating the fault current the LG fault current is very large as compared to other fault so from this we can conclude that LG fault is more severe than other fault.
as LG fault is take place between line and ground and ground potential is assume as zero and also having zero impedance so this fault current is very larger which is 1.5 time L-L-L fault. so according to this theory LG fault is more severe than other fault.

Is This Answer Correct ?    4 Yes 3 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

At what factor resistance r of a conductor depends?

633


Define reserve-generating capacity?

645


how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING)IO (current operating)?

1527


What if high voltage side circuit breaker of a ehv transformer instead of lvcb? Kindly elaborate.

1313


How to select a contactor? How many types of contactors are available

2725






what is transistors comprised of?

645


You are of electrical field and you are going for software? Why

1839


How can a equal potential zone be carried out in conductors?

811


why the arc welding machines require parallel earthing systems? ie why each machines are connected to earth pit by separate wires during earthing? wats it adavantages?

1722


can any one suggest me the tilt angle of my solar pannel ?? or tell me how can i know the fix tilt angle of my solar pannel?? my cordinates are 31.503629,72.993164.

1368


Pl.brief me about Electrical power distribution system from Main generating station to Industry.What is the use of in between station.

1582


How to select circuit breakers rating eg. if i select a circuit breakers of capacity 40 amps DC with operating voltage 28 volts and if i what to use same circuit breakers for 300 Volts DC application what is the current rating of this circuit breakers.

1315


(1)Can earth and be conected together (2) what is the diferent between earth & neutral

1292


what is DRP panels?

1671


how to calculate regulation constants for over head lines? and what are the regulation constant for raccoon conductor at different voltage level and different P.F?

1443