Chapter 10
Distribution System Protection
It is curious that physical courage should be so common in the world and moral courage so rare.
Mark Twain
A lie can travel halfway around the world while the truth is putting on its shoes.
Mark Twain
10.1 Basic Definitions
Switch: A device for making, breaking, or changing the connection in an electric current
Disconnect switch: A switch designed to disconnect power devices at no-load conditions
Load-break switch: A switch designed to interrupt load currents but not (greater) fault currents
Circuit breaker: A switch designed to interrupt fault currents
Automatic circuit reclosers: An overcurrent protective device that trips and recloses a preset number of times to clear transient faults or to isolate ...
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