Answer Posted / deadzg_devil
Creepage Distance. Creepage is the shortest path between two conductive parts (or between a conductive part and the bounding surface of the equipment) measured along the surface of the insulation. A proper and adequate creepage distance protects against tracking, a process that produces a partially conducting path of localized deterioration on the surface of an insulating material as a result of the electric discharges on or close to an insulation surface. The degree of tracking required depends on two major factors: the comparative tracking index (CTI) of the material and the degree of pollution in the environment. Used for electrical insulating materials, the CTI provides a numerical value of the voltage that will cause failure by tracking during standard testing. IEC 112 provides a fuller explanation of tracking and CTI.1 Tracking that damages the insulating material normally occurs because of one or more of the following reasons:
*
Humidity in the atmosphere.
*
Presence of contamination.
*
Corrosive chemicals.
*
Altitude at which equipment is to be operated.
Is This Answer Correct ? | 5 Yes | 0 No |
Post New Answer View All Answers
what is the k var ratting of 1250kva
if i am in front of transmission line how to know that current direction without any equipment
what is the formula for calculating the phase clerance between two phases and phase to earth how to calculate the cable for a motor
15hp motor wound by 0.9mm & 0.95mm magnet wire. at no load test it draw 4.2A current. Another motor with same condition draw 9.2A current. How can that occur? pls help
gas turbine genrator reactances
How to set a Zone 1 distance relay for distribution feeder?
why ht motors are star connected?
How to calculate LT XLPE CABLE for 11 kv / 433 v , 1000 kva oil type transformer system?
what are the specifications we must look at to select a relay for any capacity motor?
What si the d/f b/w KVA & KWH, kvarh & kvar, kwh & kvar phase voltage & line voltage
Why slip ring ind. motor power consumption is low compare to induction motor .same 90 kw motor used same load output
How to know Resistance and Reactance value of main and aux winding of single phase capacitor start capacitor run induction motor to find capacitor value?
Meter p.t. ratio= 3×230/400 , c.t.ratio = 3×1 (2) A what is m.f.
Explain what is electric traction?
design of IGBT firing circuit for 11KV