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
A d.c. Shunt motor is found suitable to drive fans because they require?
What is the formula to calculate the rating of power cable for three phase current.
What are the advantages of a three-phase system over a single-phase system?
why -48 volts dc used in telecommucation
What is the temperature PROFILE OF A FLUID W. R. T. Distance from a sphere to which it is IN CONTACT which is at constant temp.?
Is it good to short Neutral and Ground in the PLC or DCS main Power supply. Pls give YES or NO with reasons...? Simarpreet
does the Trivector Meter of three phase automatically takes care of the low power factor and gives the reading accordigly or it does not take care of the Power factor while giving the readings please explain
what is the significance of cabability curve of alternator
Explain the advantages and disadvantages of hydropower plant?
Explain the method to keep noises low in a control system?
Define resonant peak?
- two pumps must work with them at the same time but if the first pump start the second pump must delayed for some time to start also , with motor rated power = 90 KW and rated voltage = 380 V and rated power factor = 0.85 lag please draw the power and control circuit for it and determine all circuit components parameters that you use it
Discribe type of fault in DOL and stardelta startor.
How efficiency of thermal plant can be improved?
What are the difference between normal application Transformer and Solar application Transformer?