1 General
1.1 It is applicable to three-phase AC, 50(60) Hz electric power system with rated voltage of 3.6-12kv.
1.2 It is capable of short-circuit making to protect other electrical equipments inside the switchgear being damaged. 1.3 It is applicable to switchgear as KYN28-12 and various ring main units.
1.4 It aims to provide earthing protection during repair and maintenance of high-voltage electrical equipments.
1.5 Applicable Standards: IEC 62271-103 High voltage switchgear and controlgear-Part 103: Switches for rated voltages above 1 kV and up to and including 52 kV.2. Nomal service condition
• 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.3. Parameters
4. Mounting hole diagram