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Question
phase clearance between phase to phase and earth
 Question Submitted By :: Electrical-Engineering
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
For 11 KV;Ph-Ph-130 mm
Ph-E -100 mm
For 6.6 KV:Ph-Ph-90 mm
Ph-E -70 mm
For 415 V :Ph-Ph-25 mm
Ph-E -20 mm
 
Is This Answer Correct ?    27 Yes 3 No
S Pradhan
 
Answer
# 2
phase to phase=130mm
phase to earth=110mm
 
Is This Answer Correct ?    17 Yes 6 No
Venkatesh
 
 
 
Answer
# 3
For 415 V :Ph-Ph-25 mm
Ph-E -20 mm

For 6.6 KV:Ph-Ph-90 mm
Ph-E -70 mm

for 11 KV : Ph-Ph-229mm
Ph-E-178 mm

for 11 KV : Ph-Ph-229mm
Ph-E- 178mm

for 33 KV : Ph-Ph-320mm
Ph-E-320mm

for 132 KV : Ph-Ph-1100mm if Lightning impulse = 550
Ph-E- 1100mm

Ph-Ph-1300mm if Lightning impulse = 650
Ph-E- 1300mm


for 220 KV : Ph-Ph-1900mm if Lightning impulse = 950
Ph-E-1900 mm

Ph-Ph-2100mm if Lightning impulse = 1050
Ph-E-2100 mm
 
Is This Answer Correct ?    12 Yes 4 No
Geetha
 
Answer
# 4
phase to phase- 26mm
phase to earth - 20mm
 
Is This Answer Correct ?    9 Yes 3 No
Hfgh
 
Answer
# 5
phase clearance between phase to phase and earth in
11Kv,33Kv and 66kv System.
 
Is This Answer Correct ?    4 Yes 1 No
Saleem
 
Answer
# 6
ans: 110mm for phase to earth
130mm for phase to phase
 
Is This Answer Correct ?    6 Yes 4 No
Mathi
 
Answer
# 7
Please give clearances for indoor as well as for outdoor and in air/vacuum/SF6 or within a switchboard(enclosure-IP..) 
Is This Answer Correct ?    1 Yes 0 No
Sinnadurai Sripadmanaban
 
Answer
# 8
phase to phase-1000m
phase to earth-200m
 
Is This Answer Correct ?    5 Yes 10 No
S Fac
 
Answer
# 9
phase to phase 1inch and for earth 1 1/2 inch 
Is This Answer Correct ?    7 Yes 20 No
Bmw6633@gmail.com
 
Answer
# 10
phase to phase 1inch and for earth 1 1/2 inch 
Is This Answer Correct ?    10 Yes 24 No
Bmw6633@gmail.com
 

 
 
 
Other Electrical Engineering Interview Questions
 
  Question Asked @ Answers
 
what happens if i connect acapacitor to a generator load   5
why slipring motor , at full speed run as squirrel cage motor?   1
I am working in transmission network, one of my 66kv line having short distance about 6km, when sending end voltage is 67kv receiving end get 69kv, i want to know that, does distance affects in this matter, please explain in this matter & if possible answer me on my mail id, kaushikkumar.vanavi@getcogujarat.com, kaushik.vanavi@gmail.com   4
what is static switch where it can be use?   1
why we use 3 phase in our country?..why no 4,5 or 2?? Siemens 2
What precautions we have to take while handling electrical equipments? Bharti 1
what will happen if delta - star , 400V to 6.6KV step up transformer neutral is not grounded, Neutral is not used but transformer is provided with neutral.   2
why PT transformer primary r the grounded? L&T 2
my UPS is 600VA with 0.6 p.f and i use it for my computer which has 450W power supply unit, a monitor of 633nW and speakers. Can any one explain this.. because the output of UPS should be 360W (<450W)   2
how can we minimize the off load losses of a distribution transformer which is required to be energized 24x7 ?? capacity of the T/F is 1250 KVA and off load losses are around 2.0 KW.. can we use capacitor bank at the secondary of such a T/F to overcome off load losses? please elaborate briefly...thanks   2
What is the Gap Should maintain for HT cables crossing of LT Cable?   2
an electric bulb or lamp can operate on ac and dc, if yes then why   5
 
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