- Contact Person : Ms. Liu Yu
- Company Name : Shaanxi Longxiang Electrical Co., Ltd.
- Tel : 86-917-6732965
- Fax : 86-917-6732963
- Address : Shaanxi,Baoji,Gaoxin 19th Road, East Development Zone, Baoji,
- Country/Region : China
- Zip : 721306
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VIB series vacuum circuit breaker has taken into consideration of reliable interlock function which can be frequently operated at the rated current and with the capability of many times operations of breaking short-circuit current and fault current. This series of vacuum circuit breaker is an integrated unit by adopting the front and rear arrangement between operating mechanism and vacuum interrupters. It can be used for fixed installation unit and also can be used for independent track by equipped with Chassis.
Main Technical Specification
S.N | Name | Unit | Data | ||||||
1 | Rated voltage | kV | 40.5 | ||||||
2 | Rated current | A | 630 | 1000 1250 | 1600 2000 2500 3150 | ||||
3 | Rated short circuit breaking current | kA | 20 | 25 | 20 | 25 | 31.5 | 31.5 | 40 |
4 | Rated peak withstand current | kA | 50 | 63 | 50 | 63 | 80 | 80 | 100 |
5 | Rated short time withstand current | kA | 20 | 25 | 20 | 25 | 31.5 | 31.5 | 40 |
6 | Rated short circuit making current | kA | 25 | 63 | 25 | 63 | 80 | 80 | 100 |
7 | Switching operation of short circuit switching current | Cycle | 50 | 30 | |||||
8 | Rated operating sequence | 0-0.3s-CO-180s-CO,0-180s-CO-180s-CO(40kA) | |||||||
9 | Mechanical endurance | Cycle | 10000 | ||||||
10 | Rated breaking operations of the rated current | Cycle | 20000 | ||||||
11 | Rated lightning impulse withstand voltage(full wave) | kV | 75 | ||||||
12 | Rated power frequency withstand voltage | kV/min | 42 | ||||||
13 | Contact stroke | mm | 111 | ||||||
14 | Overtravel of contacts | mm | 40.5 | ||||||
15 | Closing speed | m/s | 0.60.2 | ||||||
16 | Opening speed | m/s | 1.00.2 | ||||||
17 | Contact bouncing duration at closing operation | ms | 2 | ||||||
18 | Simultaneity of three phase closing and opening | ms | 2 | ||||||
19 | Closing time | ms | 75 | ||||||
20 | Opening time | ms | 65 | ||||||
21 | Distance between phases | mm | 150,210,275(40kA) |
VIB -40.5 series of indoor high voltage vacuum circuit breaker