Common Header
Series: Airing
Rated Voltage: 12 kV (common for all units)
1. C Load Break Switch Unit
Rated Voltage: 12 kV
Rated Current: 630 A
Rated Short-Time Withstand Current (4s): 20 kA
Rated Short-Circuit Making Current (Peak): 50 kA
Electrical Endurance (E-Class): E3
Earthing Switch Making Capacity: E2
Internal Arc Withstand (1s): 20 kA
Load Break Switch Mechanical Endurance: 10,000 operations
Earthing Switch Mechanical Endurance: 3,000 operations
Power Frequency Withstand Voltage (Across Isolating Gap): 48 kV
Power Frequency Withstand Voltage (Phase-to-Phase / Phase-to-Earth): 42 kV
Lightning Impulse Withstand Voltage (Across Isolating Gap): 85 kV
Lightning Impulse Withstand Voltage (Across Gap / Phase-to-Phase / Phase-to-Earth): 75 kV
Annual Leakage Rate: 0.01% per year
Protection Degree: IP68
2. T Combined Apparatus Unit
Rated Voltage: 12 kV
Rated Current: 125 A
Rated Short-Circuit Breaking Current: 31.5 kA
Load Break Switch Mechanical Endurance: 10,000 operations
Earthing Switch Mechanical Endurance: 3,000 operations
Power Frequency Withstand Voltage (Across Isolating Gap): 48 kV
Power Frequency Withstand Voltage (Phase-to-Phase / Phase-to-Earth): 42 kV
Lightning Impulse Withstand Voltage (Across Isolating Gap): 85 kV
Lightning Impulse Withstand Voltage (Across Gap / Phase-to-Phase / Phase-to-Earth): 75 kV
Annual Leakage Rate: 0.01% per year
Protection Degree: IP68
3. CB Vacuum Circuit Breaker Unit (630A)
Rated Voltage: 12 kV
Rated Current: 630 A
Rated Short-Time Withstand Current (4s): 20 kA
Rated Short-Circuit Making Current (Peak): 50 kA
Electrical Endurance (E-Class): E2
Rated Short-Circuit Breaking Current: 20 kA
Earthing Switch Making Capacity: E2
Internal Arc Withstand (1s): 20 kA
Circuit Breaker Mechanical Endurance: 10,000 operations
Disconnector Mechanical Endurance: 3,000 operations
Earthing Switch Mechanical Endurance: 3,000 operations
Power Frequency Withstand Voltage (Across Isolating Gap): 48 kV
Power Frequency Withstand Voltage (Phase-to-Phase / Phase-to-Earth): 42 kV
Lightning Impulse Withstand Voltage (Across Isolating Gap): 85 kV
Lightning Impulse Withstand Voltage (Across Gap / Phase-to-Phase / Phase-to-Earth): 75 kV
Annual Leakage Rate: 0.01% per year
Protection Degree: IP68
4. CB Vacuum Circuit Breaker Unit (1250A)
Rated Voltage: 12 kV
Rated Current: 1250 A
Rated Short-Time Withstand Current (4s): 25 kA
Rated Short-Circuit Making Current (Peak): 63 kA
Electrical Endurance (E-Class): E2
Rated Short-Circuit Breaking Current: 25 kA
Earthing Switch Making Capacity: E2
Internal Arc Withstand (1s): 25 kA
Circuit Breaker Mechanical Endurance: 10,000 operations
Disconnector Mechanical Endurance: 3,000 operations
Earthing Switch Mechanical Endurance: 3,000 operations
Power Frequency Withstand Voltage (Across Isolating Gap): 48 kV
Power Frequency Withstand Voltage (Phase-to-Phase / Phase-to-Earth): 42 kV
Lightning Impulse Withstand Voltage (Across Isolating Gap): 85 kV
Lightning Impulse Withstand Voltage (Across Gap / Phase-to-Phase / Phase-to-Earth): 75 kV
Annual Leakage Rate: 0.01% per year
Protection Degree: IP68