i am an maintenance engineer. one distribution board have 5
feeder. recently its ELR trips frequently, but it take some
times after trip( 10min,20min..)but 3 feeder no load. two
feeder only loaded. i checked one feeder IR value all values
are above 50Mohm.but B phase to Earth is only 9Mohm.any
problem about low value
- 1 Answers
- 2032 Views
- I also Faced
- E-Mail Answers
Answer Posted / Trapti Kansal
The low earth resistance (ER) value of 9 Mohm for a distribution board feeder could be a cause for concern, as it might indicate a fault or issue with the wiring or grounding system. However, without more information on the specific equipment and operating conditions, it is difficult to determine the exact problem. It is recommended to consult with an electrical engineer or a technical expert for further analysis.
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
Don't you have similar question banks related to Oral Certification Examination conducted by Mercantile Marine Departments / Directorate of Shipping, Ministry of Shipping for Electro Technical Officer?
In a Impedance Based Distance Relay (Quad Characteristics) - Could there be two different Line Angle(RCA) for Ph-Ph & Ph-Gnd? If So Kindly Let me Know.. Where, What are the advantages of the same?
please send the last 5 years {{{JUNIOR ENGINEER - ELECTICAL, ELECTRONICS RRB CHENNAI and secundrabad}}} TECHNICAL question papers TO MY EMAIL ID dinesh100701@gmail.com
send me any model test paper of clerical post of state bank of india.......
what is earth fault relay 64T, why it is used in main Incomer and neutral CT of Transformer.
what is mean by restructuring power system?
# 4 hi friends i m from electrical branch and seeking for tech. + apti. both papers of hpcl plz get it available as soon as possible my email id is sumit_lig189@yahoo.co.in
what is a reactive power? what is the relation with power factor?
PLEASE ANYBODY HAVE ELECTRICAL CIRCUIT DIAGRAM FOR CHMER PULSE CD 60M SPARKING MACHINE.PLEASE MAIL ME SUPRIYAAYYAPPAN@YAHOO.CO.IN.
plz tel me syllabus and exam date 4 jr executive engg (electrical)
Can you used moeller lzm1 mccb in a dc system with 125vdc and 20ka short circuit current , beside is it have 24 or 48 volt shunt ? Beside how long current can through from An MCB shunt contacts? (like Z7-AS 24 V)?
i want bhel placement paper for electrical if anybody having pl send to my id kavitha867@myway.com immediately
why lightning arrestor are made in two stack of insulator but why not cvt
What will happened if the neutral of the (star connected secondry) Xformer disconnected? (if its Above KVA rated one)
In PFI plant one stage capacitor connection is directly connected(with out megnetic contact controll). but why?
