KYN28-12 Armored Withdrawable Indoor AC Metal-Enclosed Switchgear Technical Parameters
- Product Series: YBCMC
- Product Brand: Yue Biao
- Rated Voltage: 6.3, 12, 24kV
- Rated Current: 630, 1250, 1600, 2000, 2500, 3150A
- Rated Frequency: 50, 60Hz
- Switchgear Rated Current: 630, 1250, 1600, 2000, 2500, 3150A
- Circuit Breaker Rated Current: 630, 1250, 1600, 2000, 2500, 3150A
- Rated Short-Time Withstand Current: 16, 20, 25, 31.5, 40kA/4s
- Rated Peak Withstand Current: 40, 50, 63, 80, 100kA
- Rated Short-Circuit Breaking Current: 16, 20, 25, 31.5, 40kA
- Rated Short-Circuit Closing Current: 40, 50, 63, 80, 100kA
- Rated Insulation Level Power Frequency Withstand Voltage: Phase-to-Phase, Phase-to-Ground: 42kV/1min; Break (Isolation): 48kV/1min
- Lightning Impulse Withstand Voltage: Phase-to-Phase, Phase-to-Ground: 75kV/1min; Break (Isolation): 85kV/1min
- Breaker service life: 10,000 operations
- Protection rating: Enclosure IP4X; IP2X when compartment doors open
- Ambient temperature and humidity: -25°C to 45°C, daily average <95%, monthly average <90% Altitude: ≤1000m (above 1000m requires user-manufacturer consultation)
Product Application
KYN28-12 metal-clad switchgear is a 12 kV withdrawable vacuum circuit breaker (Vcb) assembly designed for 630 A-3 150 A power distribution,control and protection in urban grids,wind farms and industrial substations.Its center-mounted VD4/VS1 breaker slides out without de-energising the busbar,while IP4X armour and independent pressure-relief ducts satisfy IEC 62271-200 five-protection interlocks.On-line RS485 monitoring uploads vacuum level,temperature rise and coil status to SCADA in real time,making the unit Industry-4.0-ready.With a 25 % larger cable compartment and compact 600 mm width,the KYN28-12 delivers safe,space-saving and smart medium-voltage switching that ranks
