Creepage Distance of CT
Creepage Distance of CT
(OP)
Hello the positive thinkers,
Pls l want to know the major way/s of calculating the Creepage distance of power equipments, mostly for current Transformer.
Secondly, How can phase to ground fault be avoided if snow covers the corrugated surface of a power equipment since snow itself is a very good conductor of electricity.
Thanks i do appreciate for your answers.
Pls l want to know the major way/s of calculating the Creepage distance of power equipments, mostly for current Transformer.
Secondly, How can phase to ground fault be avoided if snow covers the corrugated surface of a power equipment since snow itself is a very good conductor of electricity.
Thanks i do appreciate for your answers.






RE: Creepage Distance of CT
Bill
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"Why not the best?"
Jimmy Carter
RE: Creepage Distance of CT
• Humidity in the atmosphere.
• Presence of contamination.
Corrosive chemicals.
Altitude at which equipment is to be operated.
See [for up to 1000 V insulation]:
http:
The creepage path is divided into a number of segments half of them protected[shaded] and half of them exposed. The creepage path along an exposed part will be of less electrical resistance then those of unexposed part. But the exposed part may be washed by rain and maintained clean, so a controlled sequence of exposed and concealed segments is the best solution for a certain pollution degree.
The creepage path length to the insulator rated voltage ratio for a medium voltage overhead line may be from 1.7 to 3.5 cm/kV function of polution degree.
Regards
RE: Creepage Distance of CT
The IEC 60950 is refered there
RE: Creepage Distance of CT
IEC 60950 is applicable to mains-powered or battery-powered information technology equipment[telecommunication],
including business equipment and associated equipment, with a rated voltage not exceeding 600V.
The standard is also applicable to such equipment designed and intended to be connected directly
to a telecommunication network and forming part of a subscriber's installation.
Regards
RE: Creepage Distance of CT
Thanks your link helped.
Thanks all