Electric Power Substations Engineering, 3rd Edition

4

High-Voltage Switching Equipment

David L. Harris

SPX Transformer Solutions (Waukesha Electric Systems)

David Childress

David Childress Enterprises

4.1    Introduction

4.2    Ambient Conditions

4.3    Disconnect Switches

4.4    Load Break Switches

4.5    High-Speed Grounding Switches

4.6    Power Fuses

4.7    Circuit Switchers

4.8    Circuit Breakers

4.1  Introduction

The design of the high-voltage substation must include consideration for the safe operation and maintenance of the equipment. Switching equipment is used to provide isolation, no-load switching (including line charging current interrupting, loop splitting, and magnetizing current interrupting), load switching, and interruption of fault currents. The magnitude and duration of the ...