KYN28A-12 Armored Switch Type AC Metal-enclosed Switchgear (hereinafter referred to as switchgear) is suitable for indoor three-phase 50/60Hz, rated voltage 10kV power systems. It is mainly used in power plants, substations, industrial and mining enterprises, and high-rise buildings for the acceptance and distribution of electrical energy, as well as circuit control, protection, and monitoring.
KYN28A-12 Switchgear has various functions to prevent misoperation, including preventing the moving of the switch with load, preventing the grounding switch from closing when the circuit breaker is in the operating position, preventing live grounding switches, and preventing accidental contact with live compartments, etc.
The switchgear is equipped with VS1, VD4 series mid-mounted high-voltage AC vacuum circuit breakers, and solid-sealed vacuum circuit breakers with excellent performance. The secondary circuit of the switchgear is equipped with advanced and reliable control and protection elements. The busbar uses heat-shrink insulation material or epoxy-coated insulation, optimizes the electrode shape, and features a compact cabinet structure.
The switchgear is a power distribution equipment with advanced technology, stable performance, a reasonable structure, convenient use, and safety and reliability.
| Name | Unit | Data | ||||||
| Rated Voltage | kV | 3.6、7.2、12 | ||||||
| Rated Frequency | HZ | 630 | 1000 | 1250 | 2000 | 2500 | 3150 | |
| Rated Current of Circult Breaker | A | 20 | 31.5 | 40 | ||||
| Rated Voltage of Switchgear | A | 20 | 31.5 | 40 | ||||
| Rated short-time withstand current(4s) | KA | 50 | 80 | 10 | ||||
| Rated Peak Withstand Current(Peak Value) | KA | 50 | 80 | 100 | ||||
| Rated Short-circuit Breaking Current | KA | 4 | ||||||
| Rated Short-circult Closing Current | KA | IP2X | ||||||
| l min power frequency withstand voltage | Rated insulation level | KV | Single bus, single bus with bypass, double bus | |||||
| Lightning impulse withstand voltage | KV | Electromagnetic, bullet ZE energy storage type | ||||||
| Class of protection | The enclosure is lP4X, the isolation room andthe circuit breaker room are lP2X when the door is open | |||||||
