What is derating?, Why it is necessary, it is same for all means for drives, motors,and cables.

Answer Posted / quratulain javaid

Derating is design process that can make significant contribution to reliability.The reliability of electrical/electronic component decrease when they operate at high stress level.These stresses are primarily temperature, voltage, current & power dissipation

In electrical derating means lowering the electrical capabilityof electrical apparatus'.In electronics derating is a operation of a device at less than its rated maximum power in order to prolong life.So it is necessary to know the derating factor for each component type related to one critical condition to run/operate in safe level.

Is This Answer Correct ?    0 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Wind mill

1437


What are m circles?

667


What is meaning of out of phase (making & breaking) capacity And how to calculate

1627


can anybody send the rrb chennai &rrb bopal question papers of 2006&2007.My exam is on 12 oct 2008.Its urgent

1646


how point on wave controller works.

2081






mostly the questions were from machines... d.c. machines, transformer, synchronous and induction all theory paper........ few from power system... but the level of paper was easy.....

1484


Why does increasing the magnetic flux in the main field of a d.c motor cause the armature current to reduce??

1523


cc of scorpio?

1796


Explain the working of variable frequency transformer?

660


In the Variable Voltage Variable Frequency Drive, how the Voltage and Frequency varied ? Is it varied in the Inverter part of the Drive ? Please give us supporting document if any.

1519


How to assume answer to electrical questions

1037


dc supply given to dc generator winding.how is possible? my knowledge is saying the winding will burn. please reply.

979


what is the reactance,capacitance & impedence electrical armoured & unarmored Cables.

1633


Name the types of motors used in vacuum cleaners, phonographic appliances, vending machines,refrigerators, rolling mills, lathes, power factor improvement and cranes.

701


What is the difference between solid grounding and impedance grounding?

1548