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Ground Switches

Versatile and Maintenance Free Design

Southern States’ product line includes one of the broadest range of ground switch offerings of any supplier in the world. These ground switches can be furnished for single pole or group operated applications to provide grounding for inspection, maintenance, repair, or replacement of other substation equipment such as capacitor banks, circuit breakers, circuit switchers, etc. They are available as stand-alone devices (capacitor bank grounding for example) or as attachments to disconnect switches, circuit switchers, and other devices. Their operation can be via manual swing handle operator, manual gear operator, electric motor operator, or manually via a hookstick; all as indicated in our available chart. This chart also indicates the available types by kV class and short-time current rating. Additionally, since interlocking is commonly performed on ground switches for personnel safety, information on the selection of the correct interlock for your specific application is provided in another document attached below.

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High Speed Ground Switches

Southern States automatic high speed ground switches, also sometimes called fault-initiating switches, provide an economical alternative for circuit protection in applications that would otherwise require costly circuit breakers. High speed ground switches can be furnished as stand-alone devices, attached to a hookstick operated switch, or attached to a single phase of a group operated switch. Installing high speed ground switches as attachments has increased in popularity, as it allows for test operation during initial installation and routine maintenance without imposing a fault on the system. Southern States high speed ground switch is commonly used as a protection device for power transformers or as a backup within a circuit breaker or circuit switcher failure scheme.

  • Versatile and maintenance-free design
  • Aluminum or copper live part construction
  • Poles can be mounted in a horizontal upright or vertical position
  • Simple installation of all mountings and operating schemes
Choose Voltage Rating:
Ground SwitchMax Voltage RatingMax BIL RatingMomentary Current RatingType of OperatorMeans of Contact EngagementCurrent Transfer Method on Hinge End
LH-615.5 kV -145 kV110 kV - 650 kV61 kAmanual swing handle or electric motordirect "slam-in" actionflexible tin plated copper braids
AST123 kV - 245 kV110 kV - 900 kV70 kA & 100 kAmanual swing handle or electric motordirect "slam-in" actionthreaded hinge
ESD-6372.5 kV - 245 kV350 kV - 900 kV100 kAmanual swing handle, manual gear, or electric motor direct "slam-in" actionflexible tin plated copper braids
TV-70123 kV - 800 kV550 kV - 2050 kV120 kAmanual swing handle, manual gear, or electric motor rotating bladeflexible tin plated copper braids
15.5 kV - 550 kV110 kV - 1800 kV61 kA, 70 kA, 80 kA, 100 kA, 120 kAmanual swing handle, manual gear, or electric motorrotating bladecontact fingers

Note: Blue indicates aluminum live part construction; red indicates copper live part construction.