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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
 
Three phase alternators are connected in star connection why? Tanfac 11
Why does the phase voltage of two healthy phases become equal to the line voltage in case of an ungrounded neutral 3 phase star connected sytem when a single line to ground fault occurs ?   2
in an open circuit. test there is no load curent.. but secondary. ia open then no urrent have to flow but there a smaller current flows why? Rubber-Park 4
What is the standard height of installation of Socket & switch from Finish Floor Level as per the IEC/IS Rules?   1
1) name the communication cable and how it is communicate in between plc to modbus , plc with hmi? 2)name of the communication cables?   1
what is VFD and how to save the power by using VFD?   5
Why we say three phase voltage 440v.   2
power is the product of voltage and current.so we can measure the value of power just by using ammeter and voltmeter.......then why do we use a wattmeter?   4
we have one ups its neutral is not earthed.its one distribution MCB has a earth fault.but we can not put off any MCB.so how to find out that in which circuit is earthed without isolating the breaker. CFCL 3
what is mathematical relation between ac to dc current how will convert Iac=50amp to Idc   6
In case of legging current of 20°, pf is .94 and leading of 20°,pf is .94 , in mathematicaly both are same but in realy how it is differ ?   3
if AVR fails in alternator. what will be the effect. HP 12
 
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