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The KYN28-12kV is an indoor AC metal-clad withdrawable switchgear designed for three-phase power systems with a rated voltage of 12kV and frequency of 50/60Hz. It serves as a critical component for receiving, distributing, and managing electrical power in the following applications:
- Power plants
- Substations
- Industrial and mining facilities
- High-rise buildings
Core Functions:
- Power Control: Enables efficient switching and load management.
- Protection: Safeguards circuits against overloads, short circuits, and faults.
- Monitoring: Supports real-time electrical parameter detection (e.g., current, voltage).
Product Specification
| Parameter | Unit | Technical Parameter | |
| Rated Voltage | KV | 12 | |
| Rated Insulation Level | Power Frequency Withstand Voltage (1min): Phase-to-earth / Isolated pole | KV | 42/48 |
| Lightning Impulse Withstand Voltage: Phase-to-earth / Isolated pole | KV | 75/85 | |
| Rated Frequency | HZ | 50 | |
| Rated Current | A | 630~3150 | |
| Main Busbar Rated Current | A | 1250,1600,2000,2500,3150,4000 | |
| Branch Busbar Rated Current | A | 630,1250,1600,2000,2500,3150,4000 | |
| Rated Short-time Withstand Current (4s) | KA | 16,20,25,31.5,40,50 | |
| Rated Peak Withstand Current ※ | KA | 40,50,63,80,100,125 | |
| Ingress Protection (IP) Rating | Enclosure Protection: IP4X (closed); IP2X (with circuit breaker door open) | ||
| Dimensions (Width × Depth × Height) | mm | 800（1000）X1300(1500)X2000※※ | |
| Weight | Kg | 800～1200 | |
Operating Environmental Conditions
- Ambient Air Temperature:
- Upper limit: +40℃
- Lower limit: -10℃
- Relative Humidity:
- Daily average: ≤ 95%
- Monthly average: ≤ 90%
- Altitude:
- Shall not exceed 1000 meters above sea level (m.a.s.l.).
- Seismic Conditions:
- Seismic intensity shall not exceed Level 8 (per GB/T 17742 Chinese Seismic Intensity Scale).
- Site Conditions:
- Installation area must be free from:
- Fire or explosion hazards
- Severe contamination
- Chemical corrosion
- Excessive vibration
- Installation area must be free from:
*When the conditions of use exceed the above scope, the user and the manufacturer shall negotiate to determine the allowable scope and technical measures.
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