800a siemens vcb in our company can not be closed electrcally
an mechanicaly cc and oc coils are found ok. why?

Answers were Sorted based on User's Feedback



800a siemens vcb in our company can not be closed electrcally an mechanicaly cc and oc coils are f..

Answer / prakash gokhale

Please check for the mechanical assembly of the VCB. Some
times due to some misalighments breaker can not be closed
mechanical or electricaly even if CC & OC are ok.

Is This Answer Correct ?    3 Yes 1 No

800a siemens vcb in our company can not be closed electrcally an mechanicaly cc and oc coils are f..

Answer / harish kumar

please check the BREAKER FUTURE INTERLOCKS ( LOOPS) MISSING IN THE CIRCUITS.

Is This Answer Correct ?    2 Yes 0 No

Post New Answer

More Electrical Engineering Interview Questions

what is the RESTART INHIBIT protection?

1 Answers   Thermax,


How many types of earths are there?What is the maximum ohms of earthfit?

3 Answers  


What is the working of AVR in AC generators?

13 Answers   Navrachana University,


two bolbs of 100w and 40w respectively connected in series across a 230v supply.which bolb will glow bright and why?

16 Answers   DRDO, PSPCL, Siemens,


What are the earth resistance Standards of 66kv sub stations according to indian norms.

2 Answers  






how the 6.6KV motor can be used with 11KV?

2 Answers  


how many types are their in switchyard or substation(like D,I TYPE), what is differant between them

0 Answers  


What is the difference between surge arrestor and surge capacitor?

2 Answers   Shreem Electric Ltd,


How to convert KW to KVA or KVAR OR kvar/kva to kw?

8 Answers  


what topics we have to concentrate for power grid et.written test.and tell what to read for english synonyms and antonyms.

0 Answers  


If I have Energy Meter Ratio as 100:5 & Also I have CT Ratio as 50:5 then what will be my multiplying Factor(M.F.)

0 Answers  


What sort of protection scheme do you suggest for the protection of a 10 HP motor?

1 Answers   Chevron,


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)