KKYN28 High Voltage Electrical Switchgear Cabinet for Airports Subways and Hospital
High Voltage Switchgear: Metal-enclosed armored type (removable type) : such as KYN28A-12 (the most common model in China). Install the main components such as circuit breakers and PT on the withdrawable trolley. During maintenance, the trolley can be pulled out to the "test position" or completely detached from the cabinet, which is safe, convenient and has high power supply
Technical Parameters：
| Parameter | Details |
| Rated voltage (AC) | 24 kv |
| Rated Current | 1250A |
| Rated Frequency | 50 60HZ |
| Switchgear Rated Current | 630A 1250A 1600A 2000A 2500A 3150A |
| Break Rated Current | 630A 1250A 1600A 2000A 2500A 3150A |
| Rated Short Time Current | 16 20 25 31.5 40 (KA/4S) |
| Rated Peak Withstand Current | 40 50 63 80 100 KA |
| Rated Short-circuit Breaking Current | 16 20 25 31.5 40 KA |
| Rated Short-circuit Closing Current | 40 50 63 80 100 KA |
| Rated insulation level, withstand voltage under power frequency | Phase - Phase Phase-Earth 42 Break (Isolation) 48 |
| lightning Impulse Withstand Voltage | Phase - Phase Phase-Earth 72 Break (Isolation) 85 |
| Service Life of Circuit Breaker | 10000 times |
| Protection Level | Shell IP4X, Breaker Cabinet Open: 12PX |
| Environmental Temperature and Humidity | -25~45 ℃ |
| Altitude | Less than 1000m |
