Model Number

VH7 35kv/40.5kv Outdoor Vacuum Circuit breaker

Detailed Selling Lead Description

Detailed Product Description

Technical Parameters:
1 Rated voltage  35kV/40.5kV
2 Rated current  1250, 1600A
3 Rated short-circuit interrupting current 20, 25, 31.5kA
4 Number or  Openings at Rated Short-Circuit Current    20times
5 Rated short-circuit closing current 50, 63, 80kA
6 Rated peak withstand current 50, 63, 80kA
7 Rated short-circuit withstand current(4s) 20, 25, 31.5kA
8 Rated lighting impulse withstand voltage 185 (222)kV
9 Rated power frequency withstand voltage in 1 Min    95 (114)kV
10 Rated  Operating Sequence 0-0.3s-CO-180s-CO
11 Rated Interrupting Current for a Single Capacitor Group  630A
12 Mechanical Service Life     10000times 
13 Rated operating voltage    DC220/110   AC220/110V
14 Average opening velocity     2.0+/- 0.3m/s
15 Average closing velocity      0.75 +/-0.20m/s
16 Opening time 40 +/-10ms
17 Closing time 80 +/-20ms
18 Total Weight 680 (910)kg

Model VH7 vacuum breakers are outdoor high-voltage switchgears used in three phase AC 50Hz electric systems with rated voltage of 40.5kV.These products feature anti-condensation, anti-fouling, aging resistance, high temperature resistance, long service life, and stable, reliable, maintenance free operation. This model is primarily used for protection and control in industrial, mining and power facilities, particularly in locations that receive heavy use.A knob insulation method is used, employing high performance insulating cement to seal the quenching pot in a common porcelain bushing. The phase pole is airtight and has a drier inside to ensure highly reliable insulation. Designed to be used at an altitude of 2500m, it may also be used in dirty areas of class IV.With outdoor CT able to be attached on lower outgoing terminals of the breaker, the spring actuator was independently developed according to international outdoor modular design construction principles.Additionally, with movement and speed able to be effectively controlled with an omni-range buffer, the breaker and support frame are split for greater operational performance.