This product is a newly developed switchgear designed and developed by our company to meet the requirements of power grid systems. It is based on the KYN28A-12 switchgear model, incorporating advanced domestic and international manufacturing technologies. The KYN28A-24 switchgear is suitable for incoming lines, feeder circuits, control, and distribution in 24 kV power distribution systems. It is primarily used in 24 kV power distribution applications.
1000mm*1810mm*2450mm
Fully enclosed metal-enclosed design with withdrawable vacuum circuit breakers
Five-prevention interlocking for safe and reliable operation, effectively preventing misoperations
Equipped with advanced relay protection devices, enabling automation of the power system
Dual-sided maintenance design for convenient installation and maintenance
- GB 3906: AC Metal-Enclosed Switchgear and Controlgear for Rated Voltages 3.6 kV to 40.5 kV
- DL/T 404: AC Metal-Enclosed Switchgear and Controlgear for Rated Voltages 3.6 kV to 40.5 kV
- GB/T 11022: Common Technical Requirements for High-Voltage Switchgear and Controlgear
- IEC 60298: AC Metal-Enclosed Switchgear and Controlgear for Rated Voltages Above 1 kV up to and Including 52 kV
Rated Voltage: 24 kV
Power Frequency Withstand Voltage: 42 kV / 1 min
Impulse Withstand Voltage: 75 kV
Rated Frequency: 50 Hz
Rated Current: 630–4000 A
Rated Thermal Stability Current: 16–50 kA / 4 s
Rated Dynamic Stability Current: 40–125 kA
Rated Short-Circuit Breaking Current: 16–50 kA
Rated Short-Circuit Making Current: 40–125 kA
Rated Voltage for Switching and Auxiliary Circuits:
- DC: 24, 30, 48, 60, 110, 220 V
- AC: 110, 220 V
Protection Level: IP4x for the enclosure, IP2X (when the circuit breaker door is open)
Ambient Temperature: Not exceeding +40°C, and not lower than -15°C. The 24-hour average temperature shall not exceed +35°C.
Temperature Conditions:
- Daily average relative humidity shall not exceed 95%.
- Monthly average relative humidity shall not exceed 90%.
- Daily average water vapor pressure shall not exceed 2.2 kPa.
- Monthly average water vapor pressure shall not exceed 1.8 kPa.
Altitude: Not exceeding 1000 m.
Environmental Air: The surrounding air shall not be significantly contaminated by dust, smoke, corrosive or flammable gases, vapors, or salt fog.
Electromagnetic Interference: The amplitude of induced electromagnetic interference in the secondary system shall not exceed 1.6 kV.
