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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Product Introduction
VS1-Series embedded pole. vacuum circuit breakers are applicable to 12kV, three-phase AC 50Hz indoor switchgear and can serve as protection and control units for industrial and mining establishment transformer substation equipment. With a modular and independent-frame design for their spring operating mechanisms, VS1-Series circuit breakers can operate with KYN28 mid-set and fixed switchgear. These circuit breakers are subject to both fixed installation and assembly with a truck as a handcart unit.
Normal service condition
Altitude | ≤1000m | |
Ambient temperature | Max | +40℃ |
Min | -15℃ | |
Ambient humidity: Maximum average humidity | 24 hours ≤95% | |
1 month ≤90% | ||
Maximum water vapor pressure | 24 hours ≤2.2kpa | |
1 month ≤1.8kpa | ||
Solar radiation is negligible. Vibration from the outside of switchgear and control-gears is negligible. The ambient air has no obvious pollution of dust smoke, corrosive or combustible gases, steams or smog.
VS1 Technical Parameters
No. | Item | Unit | Parameter | ||||||
1 | Rated voltage | KV | 12/24 | ||||||
2 | Rated frequency | Hz | 50 | ||||||
3 | Rated insulation level | 1min power frequency withstand voltage(r.m.s) | KV | 42(phase-to-phase,phase-to-earth) 48(across the isolating distance) | |||||
Lighting impulse withstand voltage (peak) | 75(phase-to-phase,phase-to-earth) 85(across the isolating distance) | ||||||||
4 | Rated current | A | 630 | 630 | 1250 | 1600 | |||
1250 | 1250 | 1600 | 2000 | ||||||
2000 | 2500 | ||||||||
2500 | 3150 | ||||||||
4000 | |||||||||
5 | Rated short-circuit breaking current | KA | 20 | 25 | 31.5 | 40 | |||
6 | Rated short-time withstand current | 20 | 25 | 31.5 | 40 | ||||
7 | Rated short-circuit marking current | 50 | 63 | 80 | 100 | ||||
8 | Rated peak withstand current | 50 | 63 | 80 | 100 | ||||
9 | |||||||||
