21-09-2013, 12:41 PM
Current limiting reactors ,location and Application
Current limiting reactors .pptx (Size: 730.85 KB / Downloads: 35)
INTRODUCTION…
Current limiting reactors can reduce short-circuit currents, which result from plant expansions and power source additions, to levels that can be adequately handled by existing distribution equipment.
HISTORY…
Current limiting reactors, once called current limiting reactance coils, were first presented at a Meeting of the Society of Mechanical, Electrical, and Steam Engineers, Boody House, Toledo, Ohio, in 1915. The inventor of the current limiting reactance coil was Vern E. Alden.
WORKING…
When a short-circuit occurs, the impedance of the system drops and a large amount of current is allowed to pass through. As the current that is passing through a system exceeds the levels that it was designed to handle, the current limiting reactor will raise the impedance of the system which will in turn reduce the amount of current that is allowed to pass through.
APPLICATIONS…
Series Reactors:
Reactors connected in series with the line or feeder. Typical uses are fault current reduction, load balancing in parallel circuits, limiting inrush currents of capacitorbanks, etc.