Answer / s pradhan

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

Answer / geetha

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

Answer / venkatesh

phase to phase=130mm
phase to earth=110mm

Answer / saleem

phase clearance between phase to phase and earth in
11Kv,33Kv and 66kv System.

Answer / hfgh

phase to phase- 26mm
phase to earth - 20mm

Answer / mathi

ans: 110mm for phase to earth
130mm for phase to phase

Answer / sinnadurai sripadmanaban

Please give clearances for indoor as well as for outdoor and in air/vacuum/SF6 or within a switchboard(enclosure-IP..)

Answer / atif irshad

Need answer with IEC Standard

Answer / s fac

phase to phase-1000m
phase to earth-200m

Answer / bmw6633@gmail.com

phase to phase 1inch and for earth 1 1/2 inch

How to calculate cable size by using load.?? Any formula...

0 Answers  

ABOUT AC GENARETORS AND MAINTANANCE AND TYPES OF GENARETORS

1 Answers  

When we use air circuit breaker, it has O/L protection ,time delay SC protection, Instataneous SC protection & ground fault protection. They all have some setting range. But what is the suitable/allowable setting for the above protection which will be safe for the equipment? For example-O/L protection setting have a range of (0.4,0.45,0.5,0.55,0.6,0.65,0.7,0.8,0.9,1.0)xIn Time delay SC protection have a range of (1.25,1.5,2,3,4,6,8,10,12)xIn Time delay setting is 0.02,0.1,0.2,0.3,0.4 Instataneous setting is fixed to 20xIn Gound fault setting is given 100A,300A,600A,900A,1200A This setting are for 2500A ACB. So what will be the basic allowable setting for the above protection? is there any formulae to calculate this<

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CAN ANYBODY PL TELL ME WAT FACTORS CAN CAUSE UNDERVOLTAGE ON A BUS??? PL LIST ALL THE REASONS WITH SOME EXPLAINATION

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ii) A shunt motor supplied at 230V, runs at 900 rpm when the current is 30A. The resistance of the armature is 0.4 ohms. Calculate the resistance required in series with the armature to reduce the speed to 600 rpm, assuming that the armature current is then 20A. [12]

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How to calculate LT XLPE CABLE for 11 kv / 433 v , 1000 kva oil type transformer system?

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What is PQA???Applications........

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What is different between resistance grounding system and resistance earthing system?

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WHAT IS DIFFERENCE BETWEEN CAPACITOR AND CAPACITANCE?

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what is the difference between the characteristics of two different phase bushing of any transformer

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what is the minimum winding resistance of 30hp compressor, to run or to switch on

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