China Earthing Switch for Switchgear Indoor Es Medium Voltage

12kV Indoor Medium Voltage Earthing SwitchGeneral
1. It is applicable to three-phase AC, 50(60) Hz electric power system with rated voltage of 3.6-12kv.
2. It is capable of short-circuit making to protect other electrical equipments inside the switchgear being damaged.
3.It is applicable to switchgear as KYN28-12 and various ring main units.
4. It aims to provide earthing protection during repair and maintenance of high-voltage electrical equipments.5. Applicable Standards: IEC 622Other Electronics 71-103 High voltage switchgear and controlLifting Equipment gear-Part 103: Switches for rated voltages above 1 kV and up to and including 52 kV.
Nomal service conSensor dition
• Ambient temperature: -25°C'40°C.
• Altitude≤1,000m. • Humidity: Daily mean relative humidity is no more than 95%; monthly mean humidity is no more than 90%.
• Seismic Fortification Intensity: No more than 8 degree.
• Pollution level: Class II.
Parameters
Sr. NODescriptionUnitData1Rated voltagekV122Rated short-time withstand currentkA31.53Rated short circuit durations44Rated short-circuit making currentkA805Rated peak withstand currentkA806Power frequency withstand voltage 1min.kV427Lightning impulse withstand voltagekV758Rated short-time withstand currentkAOptical Fiber, Cable & Wire 209Mechanical enduranceops3000
Overall dimension drawing