40.5kv Vacuum Circuit Breaker

1.The product is suitable for indoor switchgears with a rated voltage of 40.5kv and 50~60Hz three-phase current as the control and protection unit for high voltage electrical equipment.
 
2. The module spring operating mechanism is used for the breaker. Simple, mature, robust and convenient, the mechanism strengthen the reliability of circuit breaker's performance, and allows frequent operations or multiple breaks of the short-circuit current within he range of the operating current.
 
3. The 40.5kv series vacuum breaker can either be used as fixed type or handcart type.
 
4.The products have met the requirements of GB1984-2003 AC high-voltage breaker, JB3855-1996 3.6-40.5lv indoor AC high-voltage vacuum breaker and conform with the relevant requirements fo IEC62271-100.
 
 5. Main specifications and technical parameters
Item Description Unit Value
1 Rated voltage kV 40.5
2 Rated short-time power frequency withstand voltage (1min)   95
3 Rated lightning impulse withstand voltage (peak)   185
4 Rated freq. Hz 50/60
5 Rated current A 630 630 1250 1600
1250 1250 2000 2500
    3150  
6 Rated short-circuit drop-out current kA 20 25 31.5
7 Rated short time withstand current   20 25 31.5
8 Rated short time continual time s 4
9 Rated peak withstand current kA 50 63 80
10 Rated short-circuit closing current   50 63 80
11 Rated single/ back-to-back capacitor bank drop-out current A 630/400
12 Opening time (rated volt.) ms 20~60
13 Closing time (rated volt.) 35~70
14 Mechanical life times 20000(M2)
15 Rated break times for rated short drop out current 274(E2)
16 Rated operation voltage V AC110/220 DC110/220
17 Rated current of power storing motor W 100
18 Average opening speed m/s 1.4~1.7
19 Average closing speed 0.5~0.9
20 Rated operation procedure   opening-0.3s-closing opening-180s-closing opening