KYN61-40.5 metal-clad withdrawable AC metal-enclosed switchgear (hereafter referred to as "the switchgear") is suitable for three-phase AC 50Hz power systems. It is used in power plants, substations, and industrial or mining enterprises to receive and distribute electrical energy, and to control, protect, and monitor circuits.
This product complies with the following standards:
GB3906 – “3~35kV AC Metal-Enclosed Switchgear”
GB/T11022 – “Common Technical Requirements for High Voltage Switchgear and Controlgear Standards”
IEC60298 – “AC Metal-Enclosed Switchgear and Controlgear for Rated Voltages Above 1kV and up to and including 52kV”
Ambient temperature: Max +40°C, Min -10°C
Relative humidity: Daily average ≤ 95%, monthly average ≤ 90%
Altitude: ≤ 1000m
Atmospheric condition: Not suitable for corrosive, heavily polluted, flammable gases, or severe vibration environments
Seismic resistance: Earthquake intensity ≤ magnitude 8
Rated voltage: 40.5kV
Rated insulation level:
Lightning impulse withstand voltage (full wave): 185kV
Power frequency withstand voltage (1 min): 95kV
Rated frequency: 50Hz
Rated current: 630A, 1250A, 1600A, 2000A
Rated short-circuit breaking current: 20kA, 25kA, 31.5kA
Rated short-circuit making current (peak): 50kA, 63kA, 80kA
Rated dynamic withstand current (peak): 50kA, 63kA, 80kA
4s thermal withstand current (rms): 20kA, 25kA, 31.5kA
Protection degree:
Vacuum circuit breaker cabinet: IP4X
Dimensions (L×W×H):
SF6 circuit breaker cabinet: 1400 × 2200 × 2600 mm
