KYN61‑40.5 Series Armored Withdrawable AC Metal‑enclosed Switchgear

Operating Conditions:
1. Altitude ＜1000m
2. Ambient temperature –15℃~+40℃
3. Relative humidity: daily average ≤95%, monthly average ≤90%
4. Seismic intensity ≤ Magnitude 8
5. No fire, explosion, severe vibration or chemical corrosion

Features:
1. Heat‑shrink insulation + epoxy coating, compact footprint
2. High‑quality cold‑rolled steel, CNC machining, high‑strength bolts, powder coated
3. Can be equipped with domestic ZN85‑40.5 vacuum circuit breaker
4. Metal‑separated functional compartments with independent pressure relief channels
5. Circuit breaker and earthing switch can be operated with doors closed
6. Over 198 main wiring schemes, strong adaptability
7. Complete mechanical interlocking, full five‑prevention functions

Key Technical Parameters:
Rated voltage: 40.5kV
Rated frequency: 50Hz
Main busbar current: 1250/1600/2000A
Branch busbar current: 630/1250/1600A
1min power‑frequency withstand: phase‑phase/phase‑earth 95kV, across open contacts 118kV
Lightning impulse withstand: phase‑phase/phase‑earth 185kV, across open contacts 215kV
Rated short‑circuit breaking current: 25/31.5kA
Rated short‑circuit making current (peak): 63/80kA
Protection: enclosure IP4X, compartments/door‑open IP2X
Dimensions: 1400×2800(3000)×2800mm

Additional Information:

Computer interface can be designed for online centralized monitoring and control; contact us for details. (Custom‑made to drawings, Production cycle of  20‑25 days)