High-voltage electromechanical relay

Extra high voltage, low corona, grounding relays of the air insulated type. Peak test ratings up to 300kV and 100 amps continuous. Units can be operated either by solenoid, motor, or air cylinder, with spring or gravity return. All models have spherical contacts. When voltage transient limiting is required, some models have an adjustable sphere gap. Also available are units with built-in high voltage discharge resistors with energy dissipation capabilities from 50 to 10,000 ohms. Some units can be reduced in height if full line to ground voltage is connected to the top high voltage contact only and the other high voltage terminal is operating at, or near, ground potential. Line to ground voltage can also be increased by adding insulation between lower high voltage contact and ground. Normally mounted base down. Base up mounting if specified.