Earthing switches are mechanical switching devices used for earthing parts of high voltage power systems. Earthing switches are capable of withstanding short-time current, but not required to carry line current under normal conditions of the power system.
EMEK Earthing Switches are;
Three or single phase
Designed for use in open-air high voltage substations.
Vertical opening single break
Supplied as either manual or motor operated
Suitable for local and remote control
Rated short-time current: up to 40kA/3 sec
Brown or gray porcelain or polymer insulator.
|Highest System Voltage||72,5||123||145 kV||170 kV||245 kV|
|One minute power frequency voltage||140||230||275kV rms||325kV rms||460 kV rms|
|Lightning impulse voltage||325 kV Peak||550 kV Peak||650 kV Peak||750 kV Peak||1050 kV Peak|
|Rated frequency||50/60 Hz||50/60 Hz||50/60 Hz||50/60 Hz||50/60 Hz|
|Short time thermal current||40kA/1sec||40kA/1sec||40kA/1sec||40kA/1sec||40kA/1sec|
Emek is a labor-independent, internationally operating manufacturer of instrument transformers.
Its reliable and high quality products have been repeatedly tested in local and international laboratories. Its experience has been strengthened with transformers working in the system for half a century, it has improved and renewed itself every day.