ZN85 Indoor high voltage vcb produced by Kexun, a well-known power transmission and distribution manufacturer in China, is suitable for three-phase AC 50Hz power system with rated voltage of 40.5kV, and can be used as load current, overload current and fault current for industrial and mining enterprises, power plants and substations. Use
Model: ZN85
Brand:KEXR
ZN85 Indoor high voltage vcb and operating mechanism are arranged up and down, which effectively reduces the circuit breaker's Depth. The three-phase arc extinguish chamber and that connecte charged body are separated by three independent epoxy resin insulating cylinder, To form a composite insulation structure, ZN85 Indoor high voltage vcb meets the requirements of air distance and climbing distance under normal operating conditions. And effectively reduce its own volume. Vacuum interrupter and dynamic and static of main electric circuit The conductive connection is installed in the insulating cylinder, so that the phase spacing is only 300 mm. Electrical connection of main circuit All adopt fixed connection, which has high reliability. The insulating cylinder is installed in the circuit breaker frame. Above the shelf. ZN85 Indoor high voltage vcb mechanism has simple design, better output curve and performance. The characteristics and requirements of 40.5kV vacuum circuit breakers are applicable. The overall layout is reasonable, beautiful and concise. Small size, flexible operation, long service life, convenient maintenance and maintenance-free mechanism. The circuit breaker is suitable for frequent operation, various occasions and places with harsh operating conditions.
● Technical parameters of The ZN85 Indoor high voltage vcb
Number
Item
Unit
Data
1
Rated voltage
KV
40.5
2
Rated current
A
2000
3
Rated frequency
HZ
50
4
Rated short-circuit break current
KA
31.5
5
Rated short-circuit closing current
80
6
4s rated short circuit withstand current (peak)
31.5
7
Rated withstand current(peak)
80
8
1 Min working withstand voltage
KV
95
9
Lighting impulse withstand voltage(peak)
185
10
Rated operating sequence
Time
O-0.3s-CO-180s-CO
11
Rated short-circuit breaking current breaking times
20
12
Mechanical life
10000
13
Breaking time
ms
≤80
14
Single capacitor bank breaking current
A
630
15
Interruption current of back-to-back capacitor bank
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