General description
The ZN83-24KV series VCB is an exciting new addition to the indoor switchgear lineup from VACEM Co., Ltd. Designed specifically for 24KV power systems, this cutting-edge product is sure to impress.
One of the standout features of the ZN83-24KV series is its optimized modular spring operating mechanism. This mechanism not only ensures high reliability but also boasts a long service life and requires minimal maintenance. With this innovative design, you can trust that your power system will be in safe hands.
The ZN83-24KV series vacuum circuit breaker is not just any ordinary switchgear. It serves as a powerful protection and control unit for power equipment in industrial and mining enterprises. What sets it apart is its ability to thrive in even the harshest environments, thanks to its frequent operation and multiple disconnection capabilities for short-circuits.
Experience the thrill of the ZN83-24KV series VCB and take your power system to new heights.
Main technical parameter
Item |
Unit |
Date |
Rated voltage |
kV |
24 |
Rated frequency |
Hz |
50 |
Rated insulation level |
1min power frequency withstand voltage |
pole to earth |
kV |
65 |
phase |
kV |
79 |
lightning impulse withstand voltage |
pole to earth |
kV |
125 |
phase |
kV |
145 |
Power frequency withstand voltage of secondary circuit |
V |
2000 |
Rated current |
A |
630 |
630 |
1250 |
1250 |
1250 |
1250 |
1600 |
3150 |
|
|
2000 |
|
Rated short-circuit breaking current |
kA |
20 |
25 |
31.5 |
Rated short-time withstand current |
kA |
20 |
25 |
31.5 |
Rated short circuit duration |
s |
|
Rated peak withstand current |
kA |
50 |
63 |
80 |
Rated short-circuit making current |
kA |
50 |
63 |
80 |
Rated short-circuit current breaking time (classE2) |
times |
30 |
Rated single/back to back capacitor bank breaking current |
A |
630/400 |
Clearance between open contacts |
mm |
12~14 |
Contact stroke |
mm |
3~5 |
Allowable wear thickness of contact |
mm |
3 |
Average opening speed |
m/s |
1.1~1.6 |
Average closing speed |
m/s |
0.6~1.1 |
Contact closing bounce time |
ms |
≤2 |
Different phase of contact closing and opening |
ms |
≤2 |
Rebound amplitude of opening contact |
mm |
≤2 |
Opening time (rated voltage) |
ms |
20~50 |
Closing time (rated voltage) |
ms |
30~70 |
Mechanical life (M2) |
times |
10,000(20,000) |
Rated operating voltage |
V |
AC110/220 DC110/220 |
Rated operation sequence |
|
0-0.3s-CO-180s-CO |
For more switchgear parts, pls refer to insulation parts: https://china-vacem.en.made-in-china.com/product-group/BbRAnYUjsLrW/Insulation-Accessories-catalog-1.html
, or copper tulip contact: https://china-vacem.en.made-in-china.com/product-group/nbUGDIpPuLYM/Tulip-contact-series-1.html
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