Ningbo Tianan (Group) Co.,Ltd.
| Payment Terms | L/C, T/T, |
| Supply Ability | 2000 PCS/year |
| Delivery Time | 45 work days |
| Packaging Details | Wooden Cases |
| Rated Voltage | High Voltage |
| Embedded Poles | APG Process |
| Rated Current | 630 A,1250A |
| Auxiliary Contacts | High Auxiliary Contacts |
| Frequency | 50Hz |
| Mechanical Life | 15 years |
| Brand Name | Tianan Electric |
| Model Number | VT19-24 |
| Certification | GB1984、GB/T11022、DL/T403 and IEC62271 |
| Place of Origin | China |
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Product Specification
| Payment Terms | L/C, T/T, | Supply Ability | 2000 PCS/year |
| Delivery Time | 45 work days | Packaging Details | Wooden Cases |
| Rated Voltage | High Voltage | Embedded Poles | APG Process |
| Rated Current | 630 A,1250A | Auxiliary Contacts | High Auxiliary Contacts |
| Frequency | 50Hz | Mechanical Life | 15 years |
| Brand Name | Tianan Electric | Model Number | VT19-24 |
| Certification | GB1984、GB/T11022、DL/T403 and IEC62271 | Place of Origin | China |
| High Light | High Voltage Vacuum Circuit Breaker ，VS1(ZN63A)-12 Vacuum Circuit Breaker ，Indoor AC Vacuum Circuit Breaker | ||
VS1(ZN63A)-12 Indoor AC High Voltage Vacuum Circuit Breaker
NINGBO TIANAN (GROUP) CO., LTD.
The structure of vacuum arc-extinguish room
Vacuum arc-extinguish room is the core parts from circuit breaker to support, connect and break current energy. It has sufficient arc-extinguish function and high operation duration.
The main parameter of 24KV circuit breaker
| Rated voltage | 24kV | ||
| Rated frequency | 50Hz | ||
| Rated lighting impulse withstand voltage | 125kV | ||
| Rated 1 min power frequency withstand voltage | 65kV | ||
| Rated operation sequence | O-0.3s-CO-180s-CO | ||
| Rated current (A) | 630,1250 | 1250,1600,2000,2500 | |
| Rated short circuit breaking current (r.m.s, kA) | 20/25 | 31.5 | |
| Rated short circuit making current (peak value, kA) | 50/63 | 80 | |
| Rated short time withstand current/short circuit continuous time (kA/s) | 20,25/4 | 31.5/4 | |
| Rated peak value withstand current (kA) | 50/63 | 80 | |
| Breaking times of rated short circuit(times) | 30 | ||
| Mechanical duration (times) | 20000 | ||
| Weight (kg) | Fixed type | ≤250 | |
| Truck type | ≤350 | ||
| Name | Unit | Data | |
| Distance of contact terminal | mm | 12±1 | |
| Over-travel | 4±1 | ||
| Three-phase opening & closing asynchronous | ms | ≤2 | |
| Tripping time of closing contact terminal | ms | ≤2 | |
| Closing & opening time | Opening | ms | ≤50 |
| Closing | ≤70 | ||
| Average opening speed(after opening 6mm) | m/s | 1.4±0.3 | |
| Average closing speed(after closing 6mm) | 0.8±0.2 | ||
Overview
The circuit breaker is identified by some national standards and international relative standards, such as GB1984,GB/T11022,DL/T403 and IEC62271, etc. It has reliable lockage, used as truck department or fixed installation department.
VT19-24indoor HV vacuum circuit breaker is used in the mining company ,power factory and substation,which is widely used in the rated current or multiple breaking short circuit current.
Company Details
Business Type:
Manufacturer,Exporter,Trading Company,Seller
Year Established:
1969
Total Annual:
250000000-300000000
Employee Number:
3000~3500
Ecer Certification：
Verified Supplier
Ningbo Tianan (Group) Co, Ltd is a famous leading influential enterprise of the power transmission equipment manufacturing in China.It was founded in 1969,currently under the group, we have 1 national-level R&D center, 2 provincial-level R&D center, 10 professional companies, 70 sales office... Ningbo Tianan (Group) Co, Ltd is a famous leading influential enterprise of the power transmission equipment manufacturing in China.It was founded in 1969,currently under the group, we have 1 national-level R&D center, 2 provincial-level R&D center, 10 professional companies, 70 sales office...
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