what is the differents and advantages of Electro magnetics
relay and static relay ? what is the numerical relay ?
advatages?......
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Answer Posted / pramod kumar
Electro magnetic relays r 1st generation relays they use
principle of elecro magnetic principle.they depend apon
gravitation also and the value changes to the surrounding
magnetic fields also.
static relays r 2nd generation relays.In this relays
transistors and IC's r been used. there value may vary wrt
temperature also.
numerical relays are present generation relays. They use
Microprocessor. with in built software and predefined values
if any values extend the predefined values then relay gets on.
by this relay we can find distance of fault also.
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