24kv Vacuum Circuit Breaker

1. The module spring operating mechanism is used for the breaker, so the 24KV series vacuum breaker possess the characteristics of simple in structure, reasonable design, reliable and long service life, maintenance-free, etc.
2. The 24kv series vacuum breaker can either be used separately or used for the metal-clad withdrawal switchgear and fixed switchboard and oil-free reforming, and can be interchangeable with similar product abroad.
3. The production of insulation pole tube adopts mature APG technology ,which ensure the reliability of circuits insulation.
4.The products has met the requirements of GB1984-2003 AC high-voltage breaker, JB3855-1996 3.6-40.5lv indoor AC high-voltage vacuum breaker and DL403-1999 technical conditions for ordering of 10-35kv indoor high-voltage vacuum breaker, and conform with the relevant requirements of IEC62271-100. 
5. Main Technical Parameters
Item Description Unit Value
1 Rated voltage kV 24
2 Rated short-time power frequency withstand voltage (1min) 65
3 Rated lightning impulse withstand voltage (peak) 125
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(40kA is 800/400)
12 Rated capacitor bank closing inrush current kA 12.5(frequency no more than 1000Hz)
13 Opening time (rated volt.) ms 20~50
14 Closing time (rated volt.) 35~70
15 Mechanical life time 20000(M2)
16 Rated break times for rated short drop out current 274(E2)
17 Rated operation voltage V AC110/220 DC110/220
18 Rated current of power storing motor W 100
19 Average opening speed m/s 1.1~1.7
20 Average closing speed 0.6~1.1
21 Rated operation procedure   opening-0.3s-closing opening-180s-closing opening
*Note: in case rated current is 4000A, the switch cabinet shall be forced to cool with air