my 10 hp submersible pump is tripping when connected
through ELCB.I have checked the megger value of the coil's
with body.It was found to be 0.2mega ohm.that is leakage is
there.But when connected to mccb it is not tripping.no
leakage current in the motor.Is it safe to connect to mccb?
what are the problem's will arise if future?also tell me in
ELCB no neutral is connected to motor.than how ELCB was
working?



my 10 hp submersible pump is tripping when connected through ELCB.I have checked the megger value ..

Answer / virendra joshi

There may be a minor leakage in , also please check the
mAmp of the ElCB if it is 100ma then there is a possible
chance of tripping on minor leakage.. i suggest you to try
with 300ma ELCB even if get tips then you have to check the
motor winding & connecting cable thoroly.

Is This Answer Correct ?    9 Yes 1 No

Post New Answer

More Electrical Engineering Interview Questions

what will happen if a 3 phase motor is connected to a single phase circuit and vice versa?

3 Answers  


how we explain parallel paths armature winding?

0 Answers  


in which direction real power and reactive power flow and why???????

3 Answers  


Dear sir,We have a 7.5hp motor,it was running smoothly and suddenly one winding is carring more current then others(r=6.5,y=6.3,b=10)..whts wrong with tis...?

5 Answers   Hindustan Motors,


how to set relay setting? and example calculation...

0 Answers   JSW,






can we identify the direction of power flow in transmission line by after only looking the tower

7 Answers   TNEB Tamil Nadu Electricity Board,


explain why the armature voltage changes when the field rheostat is varied in self excited DC generator

2 Answers  


why dc is used in control circuit for mv & hv switchgear instead of ac

0 Answers  


why do we earth the tandelta point of a power transformer bushing?

1 Answers  


lightning arrester rating selection procedure: (line to line voltage(kV)/(squ.root of 3))*squ.root of 2. now the question is, IS this above formula correct for both STAR and DELTA connected system???

1 Answers  


what is RR number Abbreviation energy meter

2 Answers   Trimax,


why core losses are affected with change in voltege in transformer?

1 Answers   HCL,


Categories
  • Civil Engineering Interview Questions Civil Engineering (5085)
  • Mechanical Engineering Interview Questions Mechanical Engineering (4451)
  • Electrical Engineering Interview Questions Electrical Engineering (16632)
  • Electronics Communications Interview Questions Electronics Communications (3918)
  • Chemical Engineering Interview Questions Chemical Engineering (1095)
  • Aeronautical Engineering Interview Questions Aeronautical Engineering (239)
  • Bio Engineering Interview Questions Bio Engineering (96)
  • Metallurgy Interview Questions Metallurgy (361)
  • Industrial Engineering Interview Questions Industrial Engineering (259)
  • Instrumentation Interview Questions Instrumentation (3014)
  • Automobile Engineering Interview Questions Automobile Engineering (332)
  • Mechatronics Engineering Interview Questions Mechatronics Engineering (97)
  • Marine Engineering Interview Questions Marine Engineering (124)
  • Power Plant Engineering Interview Questions Power Plant Engineering (172)
  • Textile Engineering Interview Questions Textile Engineering (575)
  • Production Engineering Interview Questions Production Engineering (25)
  • Satellite Systems Engineering Interview Questions Satellite Systems Engineering (106)
  • Engineering AllOther Interview Questions Engineering AllOther (1379)