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KYN28A-12KV medium voltage 3.6KV 6.6KV 12KV 24KV withdrawable switchgear
Voltage: 12KV
Current:630-2000A
Circuit breaker: Vacuum type
Type: withdrawable
General
Service environment
1. Air temperature: -25℃~+40℃
2. Humidity: Monthly average humidity 95%; Daily average humidity 90%.
3. Altitude:≤ 2500m
4. Ambient air not apparently polluted by corrosive and flammable gas, vapor, etc.
5. No frequent violent shake
Technical data
| No. | Item | Unit | Parameter | ||
| 1 | Rated voltage | kV | 3.6~24 | ||
| 2 | Rated frequency | Hz | 50/60 | ||
| 3 | Rated current | A | 630,1250,1600,2000,2500,3150,4000 | ||
| 4 | Branch busbar Rated current | 630,1250,1600,2000,2500,3150,4000 | |||
| 5 | Main busbar Rated current | 630,1250,1600,2000,2500,3150,4000 | |||
| 6 |
1min Power frequency withstand voltage |
wet | KV | 38 | 50/60 |
| dry | 48 | 60/65 | |||
| 7 | Lightning impulse withstand voltage | kV | 75 | 95/125 | |
| 8 | Rated short circuit breaking current (peak) | KA | 40/50/63/80/100 | ||
| 9 | Short-time withstand current(4s) | 20/25/31.5/40 | |||
| 10 | Protection type | IP4X for housing | |||