| Brand | ROCKWILL |
| Model NO. | High-Performance Metalclad AC Enclosed Switchgear-24kV |
| Rated voltage | 24kV |
| Rated frequency | 50/60Hz |
| Series | KYN28A |
The KYN28A-24(Z) Metalclad AC Enclosed Switchgear (Withdrawable Type) is a high-performance power distribution solution designed for medium-voltage systems. Its robust metalclad enclosure ensures superior protection, while the withdrawable design simplifies maintenance, making it ideal for industrial plants, commercial complexes, and utility grids.
Standards:IEC 62271-200:2021
Broad Voltage Compatibility: Operates across 3.6kV to 24kV, accommodating diverse medium-voltage distribution needs and ensuring flexibility in grid integration.
Compact Design: Space-efficient structure minimizes installation footprint, suitable for urban substations and indoor power rooms.
Easy Operation and Installation: User-friendly interfaces and modular components simplify on-site setup and daily operations, reducing commissioning time.
Reliable Interlocks: Multi-layer mechanical and electrical interlocks prevent misoperations, ensuring personnel safety during switching or maintenance.
Reduced Maintenance: Withdrawable components allow quick disassembly and replacement without disrupting the entire system, minimizing downtime and long-term maintenance costs.
Durable Metalclad Protection: All-metal enclosure provides corrosion resistance, dust protection, and impact resistance, extending equipment lifespan in harsh environments.
| Item | Unit | Data (24kV) |
|---|---|---|
| Rated Voltage | kV | 24 |
| Power-frequency Withstand Voltage (1 min) — To earth & between phases | kV | 65 |
| Power-frequency Withstand Voltage (1 min) — Across isolating distance | kV | 79 |
| Lightning Impulse Withstand Voltage — To earth & between phases | kV | 125 |
| Lightning Impulse Withstand Voltage — Across isolating distance | kV | 145 |
| Rated Frequency | Hz | 50/60 |
| Rated Current | A | 630, 1250, 1600, 2000, 2500, 3150 |
| Rated Current of Branch Bus | A | 630, 1250, 1600, 2000, 2500, 3150 |
| Rated Short-time Withstand Current | kA | 16, 20, 25, 31.5 |
| Rated Peak Withstand Current | kA | 40, 50, 63, 80 |
| Rated Short-time Withstand Current Duration | s | 4 |
| Protection Level | — | Enclosure: IP4X; Doors open: IP2X |
| Weight | kg | 840; 1440 (rated current ≥ 1600A) |
Ambient Temperature: -5 °C to +40 °C (IEC indoor class; -25 °C to +45 °C available as customized)
Altitude: ≤1000m (Ka correction for higher altitudes)
Relative Humidity: Daily average ≤95%, Monthly average ≤90%
Installation: Indoor, free from corrosive or flammable gas, steam, and excessive dust
Seismic Resistance: ≤Magnitude 8
Note: Customized products are available.
Yes. Features user-friendly interfaces and modular components that simplify on-site setup and daily operations, reducing commissioning time.
Features multi-layer mechanical and electrical interlocks preventing misoperations, ensuring personnel safety during switching or maintenance.
Yes. Withdrawable components allow quick disassembly and replacement without disrupting the entire system, minimizing downtime and long-term maintenance costs.
Yes. The all-metal enclosure provides corrosion resistance, dust protection, and impact resistance, extending equipment lifespan in harsh environments.
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