Today in modern age, the demand of electricity is increase. The mostly usage of electricity are in lighting, heating and home appliance things. Because today in modern age every thing are change in electricity. Our daily uses base the continuity of electricity is very important. In the cause of fault all our work are stop. So, in this cause we use different source of protection. Which are able to solve different problem in cause of fault.
In this purpose we used switch gear, which is able to separated defaulted part to normal part. The switch gears are based on relays and circuit breakers. These equipment are join together. When system have find any fault the relay are operate and transfer fault signal to breaker. The breaker are trip after receive the signal from relays and separate the faulted part. So we say that,
"Switch gear system are those, which protect our electric system and save our healthy part system to faulted part system"
HOME AND OFFICE USES:-
In home and office, the tumbler switch gear are used to protect system. This kind of switch gear is very simple. In this switch gear a small fuse include. Which are control and protect the home electric equipments.
For high rating purpose,we used H.R.C fuse in circuits. Here H.R.C is the abbreviation of (high rupturing capacity). This type of switch gear are work better but in high voltage or high current its working is not good. Because after fault its fuse wire are melt. So, a large times are spend to repair the system.
DEVELOPMENT POWER SYSTEM PROTECTION:-
But after development of power system the other equipment are introduce which are work at high voltage and high current. In this heavy fault cause we used automatic circuit breaker. And we know that, circuit breaker is the equipment which are circuit open and close in normal and abnormal condition.
Thanks........ For regard: YASIR ALI