Active Member
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[China]
Address: No. 25 Street , Hanghai Road, Zhengzhou,Henan,China
Contact name:Ken Chan (English)
Knkong Electric Co.,Ltd |
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Type: vacuum circuit breaker.
Working 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
Fully type-tested
The KYN28 series switchgear produced by our company has passed all the tests required by the international (IEC) standards. When each switchgear is subjected to rigorous routine tests designed to check the function of the switchgear according to the specific characteristics of each device before leaving the factory.
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 | The 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 | |||
