17-01-2013, 04:23 PM
System Component and Protection Devices
System Component.ppt (Size: 333 KB / Downloads: 32)
Introduction
While we take advantage of the tremendous benefits electricity can provide, we must be careful to protect the people and systems that use it It is necessary then, that the mighty force of electricity be kept under control at all times.
If for some reason it should get out of control, there must be a method of protecting people and equipment that use electricity.
Devices have been developed to protect people and electrical circuits from currents and voltages outside their normal operating ranges .
Busbar Protection
TECHNIQUES FOR BUSBAR PROTECTION
Interlocking schemes
High-impedance protection
Protection using linear couplers
Microprocessor-based relays
CONCLUSION
If a circuit develops problems it can damage the equipment or endanger personnel.
Circuit protection device is used to keep an undesirably large current, voltage, or power surge out of a given part of an electrical circuit.