KYN28A-12 (GZS1) Armored Center- Mounted Metal-Enclosed Switchgear
The busbar system features a single-bus configuration, which can be optionally configured as a single-bus with bypass or a double-bus structure. Enables the execution of various switching operations while the high-voltage compartment door remains closed. Features a compact structure and flexible layout options, thereby minimizing floor space requirements. Achieves an enclosure protection rating of IP4X when the door is closed, effectively ensuring personnel safety. Incorporates a "Five Preventions" interlocking mechanism to safeguard operating personnel. The cable compartment offers ample space, facilitating the installation of multiple cables as well as equipment maintenance. Offers flexible options for the selection of vacuum circuit breakers.
Description
Technical Parameters
Product Model: KYN28A-12 Armored Mid-Mounted Metal-Enclosed Switchgear
| project | unit | parameter |
| Rated Voltage | kV | 3 6 7.2 12 |
| Rated Insulation Level: 1-Minute Power-Frequency Withstand Voltage | kV | 42 |
| Lightning Impulse Withstand Voltage | kV | 75 |
| Rated Frequency | Hz | 50 |
| Main Busbar Rated Current | A | 630 1250 1600 2000 2500 3150 4000 |
| Branch Busbar Rated Current | A | 630 1250 1600 2000 2500 3150 |
| Rated Short-Time Withstand Current (4s) | A | 16 20 25 31.5 40 50 |
| Rated Peak Withstand Current* | A | 40 50 40 50 63 80 100 125 |
| Protection Class | A | Enclosure protection rating: IP4X; IP2X when compartment doors or circuit breaker compartment doors are open. |
| Rated Operating Procedure | A | Open — 0.3 min — Close — Open — 3 min — Close — Open |
| Closing Time | ms | 35~70 |
| Opening Time | ms | ≤45 |
| Arc duration | ms | ≤15 |
| Breaking Time | ms | ≤60 |
| Overall Dimensions (W × D × H) | mm | 650(800.1000)*1500 (1660)*2300 |
| Note: The short-circuit capacity of current transformers should be considered separately. | ||
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