33KV Vacuum Circuit Breaker
Breaker Switch Unit with Encapsulated Vacuum Interrupter
Each vacuum interrupter is embedded in a solid-insulated pole made of weather-proof cyclo aliphatic epoxy resin. This enables a small design as well as resistance against environmental effects. The breaker switch unit is comprised of three poles, the operating mechanism, and the operating mechanism housing.
The sequence of the poles is A -B – C or 1 – 2 - 3 (sequence left to right when viewed from the lower terminal side of the recloser switch unit.
Breaker Principle and Design of 36KV Vacuum Circuit Breaker
ZW32 series Breakers are used in distribution systems. Circuit breakers are used to make and break normal and fault currents. Breakers are fully equipped with sensors and a controller to provide a means of protection and control. In case of a line fault, breakers can break and make currents several times, thus avoiding longer network interruptions due to temporary faults. The manufacture, design, and testing of the vacuum recloser is based on current standards IEC 62271-100.
Technical parameters of 33KV Vacuum Circuit Breaker
Table 1-Circuit Breaker Rated Technical Data
|
Name |
Unit |
Parameter |
||
|
1 |
Rated voltage |
kV |
36 |
|
|
2 |
1 min rated power frequency withstand voltage |
70 |
||
|
3 |
Rated lightning impulse withstand voltage (peak) |
170 |
||
|
4 |
Rated current |
A |
630 |
|
|
5 |
Rated frequency |
Hz |
50/60 |
|
|
6 |
Rated short-circuit breaking current |
kA |
||
|
7 |
Rated short-circuit making a current (peak) |
|||
|
8 |
Rated peak withstand current |
|||
|
9 |
Rated short-time withstand current (4s) |
kA |
||
|
10 |
Rated operating sequence |
O-0.3s-CO-180s-CO |
||
|
11 |
Closing time |
ms |
25-60 |
|
|
12 |
Opening time |
18-45 |
||
|
13 |
Breaking times for rated short-circuit breaking current |
times |
30 |
|
|
14 |
Mechanical life |
10000 |
||
|
15 |
Secondary circuit 1min power frequency withstand voltage |
V |
2000 |
|
|
16 |
Charging motor rated power |
W |
40 |
|
|
17 |
Charging motor rated voltage |
V |
DC24 |
|
|
18 |
Rated closing operation voltage |
DC24 |
||
|
19 |
Rated opening operation voltage |
DC24 |
||
|
20 |
Motor charging time |
s |
≤12 |
|
|
21 |
Weight |
Circuit breaker |
kg |
130 |
|
A circuit breaker with dis-connector |
165 |
|||
Table 2 - Main Mechanical Characteristics of Circuit Breaker
|
Name |
Unit |
Parameter |
|
|
1 |
Contact travel |
mm |
12-14 |
|
2 |
Contact over-travel |
2-4 |
|
|
3 |
Phase Distance (Center to Center) |
410±2 |
|
|
4 |
Contact closing bounce time |
ms |
≤3 |
|
5 |
Three-phase open/close synchronism |
≤2 |
|
|
6 |
Average opening speed |
m/s |
|
|
7 |
Average closing speed |
||
|
8 |
Resistance of the main circuit |
μΩ |
≤200 |
Table 3 – Main Technical Data of Dis-connector
|
Name |
Unit |
Parameter |
||
|
1 |
Rated voltage |
kV |
36 |
|
|
2 |
Rated current |
A |
630 |
|
|
3 |
Frequency |
Hz |
50/60 |
|
|
4 |
Short-time withstand current (4s) |
kA |
||
|
5 |
Rated peak withstand current |
|||
|
6 |
1min power frequency withstand voltage |
Across open contacts |
kV |
70 |
|
7 |
Circuit resistance |
μΩ |
≤120 |
|
|
8 |
Center deviation value of three-phase insulating closing |
mm |
≤2 |
|
|
9 |
Synchronism deviation value of three-phase insulator open/close |
≤2 |
||
|
10 |
Insulating distance between conductor to earth |
≥300 |
||
|
11 |
Contact travel |
≥260 |
||
Table 4 – Operating Mechanism Characteristics
|
Name |
Unit |
Parameter |
||
|
1 |
Opening coil |
DC24 |
7 |
Reliable tripping under 65%-120% rated voltage, no tripping less than 30% rated voltage |
|
DC110 |
5 |
|||
|
AC220 |
||||
|
DC220 |
||||
|
2 |
Closing coil |
DC24 |
7 |
Reliable tripping under65%-120% rated voltage |
|
AC220 |
||||
|
DC220 |
||||
|
3 |
Overcurrent tripping coil |
8 |
||
|
4 |
Energy charging motor |
Rated voltage: DC/AC220V Rated power: 40W |
Reliable tripping under85%-110% rated voltage |
|
|
5 |
Closing spring charging time |
≤10s |
||
Zhuhai GopowerSmart Grid Co., Ltd. is one of the earliest 33 kv vcb manufacturer. We provide 33kv automatic circuit recloser, 33kv pcvcb, 33kv outdoor vcb, vcb 33kv and etc. Want to know 33kv auto recloser priceor 33 kv vcb price? Please contact us.
Send product request
Other supplier products
 |
Centralized Type DTU | The centralized DTU adopts high-performance MCU processor, high-speed industrial network communication technology, multi-CPU integration technology... |
 |
11KV Auto Recloser Vacuum Circuit Breaker | ZW32 series 11 kv outdoor vacuum circuit breakers are used in distribution systems and pole mounted recloser. 11 kv outdoor vacuum circuit breakers... |
 |
33KV SF6 Gas Load Break Switch | These load break switch 33kvare intended for outdoor applications. They can be mounted either horizontally or vertically, and are suitable for elec... |
 |
24KV SF6 Gas Load Break Switch | Application of 24KV SF6 Gas Load Breaker Switch The SF6 LBS 24kv 630Agas-insulated switch is a three-phase interoperable switching device designed... |
 |
Centralized Type DTU | The centralized DTU adopts high-performance MCU processor, high-speed industrial network communication technology, multi-CPU integration technology... |
Same products
 |
Glucose Monohydrate | Seller: ZHENGZHOU HOOCHEMTEC CO., LTD | Dextrose monohydrate is a crystalline form of glucose, usually in the form of white crystalline p... |
 |
Xanthan Gum 200 Mesh | Seller: ZHENGZHOU HOOCHEMTEC CO., LTD | Xanthan gum is a polymer compound, usually in the form of white to slightly yellow powder. It is ... |
 |
4-MMC 4mmc Hot Selling for sale a | Seller: 833484 | 4-MMC 4mmc Hot Selling for sale a Dear friend Please don't worry about customs issues if you are... |
 |
4-MMC 4mmc Overseas warehouse High qualit a | Seller: 833483 | 4-MMC 4mmc Overseas warehouse HiDear friend Please don't worry about customs issues if you are i... |
 |
4-MMC 4mmc Supply Raw Material Lower price a | Seller: 833486 | 4-MMC 4mmc Supply Raw Material LoDear friend Please don't worry about customs issues if you are ... |
