| Brand | ROCKWILL |
| Model NO. | 145kV/123kV Dead tank vacuum circuit breaker |
| Rated voltage | 123/145kV |
| Rated normal current | 4000A |
| Rated short circuit breaking current | 40kA |
| Series | RVD |
Product overview
As a new generation of distribution core equipment specially designed for 145kV three-phase AC systems, RVD vacuum high-voltage tank circuit breaker takes "SF6 free environmental protection technology+high-performance vacuum arc extinguishing+high stability operating mechanism" as its core, breaking the limitations of traditional tank circuit breakers. It can adapt to harsh high-voltage distribution scenarios and create long-term value for users from the perspectives of environmental protection, operation and maintenance, and safety. It is currently the preferred solution for upgrading high-voltage distribution systems in substations, industrial plants, and other areas.
Main Features
No SF6 gas design, green and zero burden: Abandoning traditional SF6 greenhouse gas insulation media, there are no harmful gas emissions throughout the process, in line with the dual carbon policy and environmental protection requirements, and there is no need to bear the environmental compliance costs and rectification risks of SF6 equipment.
High performance vacuum arc extinguishing chamber, long-term protection equipment: equipped with high-quality vacuum arc extinguishing components, the arc extinguishing response speed is fast, which can quickly cut off the arc, greatly reduce the erosion loss of conductive contacts, extend the life of equipment core components from the root, and reduce the frequency of maintenance and replacement.
High reliability operating mechanism, zero opening and closing errors: Customized and stable operating mechanism with high action accuracy and fast response speed, ensuring that each opening and closing operation is completed quickly and effectively, avoiding operational failures from the source, and ensuring the continuous operation of the distribution system.
Can type sealed structure, suitable for complex working conditions: adopting a fully sealed tank design, it has excellent dustproof, moisture-proof, and anti pollution performance, and can operate stably in complex outdoor/indoor environments such as high temperature, high humidity, and high dust.
Low operation and maintenance costs, high long-term cost-effectiveness: low loss rate of core components, low risk of failure, significantly reducing manpower and capital investment in spare parts replacement and on-site maintenance, and reducing long-term usage costs by more than 30% compared to traditional equipment.
Wide adaptation current range, strong scene compatibility: supports multiple rated current selections of 2000/3150/4000A, and can flexibly match high-voltage distribution systems of different capacities without the need for additional customization and adjustment.
product structure
The RVD vacuum high-voltage tank circuit breaker mainly consists of the following core components:
Vacuum arc extinguishing unit: Equipped with a high-performance vacuum arc extinguishing chamber, integrated with conductive contacts and insulating supports, it is the core module for achieving rapid arc extinguishing;
Sealed tank: It is sealed and packaged with high-strength metal material, with a vacuum insulated environment inside and an insulated sleeve (spiral structure in the picture) on the outside for external wiring;
Operating mechanism box: integrated stable operating mechanism, control components, and status display device, installed below the tank, responsible for receiving instructions and driving opening and closing actions;
Supporting frame: Using steel structure brackets with high-strength load-bearing performance, the equipment can be stably fixed to the installation foundation, while reserving space for operation and maintenance.
Technical Parameters
Specifications |
Unit |
Value |
|
Rated voltage |
kV |
145 |
|
Rated current |
A |
2000/3150/4000 |
|
Rated short circuit breaking current |
kA |
31.5/40 |
|
Rated frequency |
HZ |
50/60 |
|
Operational altitude |
M |
≤2000 |
|
Operating ambient temperature |
℃ |
-45~50 |
|
Operating pollution class |
Class |
Ⅳ |
|
Wind speed resistance |
m/s |
34 |
|
Aseismatic class |
Class |
0.5G（AG5） |
|
Rated short-time withstand current (r.m.s) |
kA |
40 |
|
Rated short-circuit withstand time |
kA |
3 |
|
1min rated power frequency withstand voltage (r.m.s) |
Phase to earth |
kV |
275 |
Across isolating distance |
kV |
275（+40） |
|
Phase to phase |
kV |
275 |
|
Rated lightning impulse withstand voltage (peak) |
Phase to earth |
kV |
650 |
Across isolating distance |
kV |
650（+100） |
|
Phase to phase |
kV |
650 |
|
Vacuum degree of arc extinguishing chamber |
|
≤1.33x10⁻3 |
|
circuit-breaker class |
Class |
E2-C2-M2 |
|
Mechanical life |
Times |
10K |
|
Opening time |
ms |
25正负5 |
|
Closing time |
ms |
45±10 |
|
Closing-Opening time |
ms |
≤60 |
|
Disconnector class |
Class |
M2 |
|
bus-transfer current/voltage switching by disconnector |
A/V |
1600/100 |
|
Application scenarios
110kV/145kV substation: As the core switchgear of the main distribution circuit, it replaces traditional SF6 circuit breakers and adapts to the environmental upgrading and stable operation needs of the substation;
High voltage distribution system in large industrial plants: used for high-voltage incoming lines/distribution circuits in large enterprises such as steel and chemical industries, ensuring power supply stability in high load and continuous production scenarios;
New energy power station (wind/photovoltaic): adapted to the distribution system of wind and photovoltaic power stations, in line with the environmental protection requirements of green power projects, while withstanding the fluctuating load of new energy power generation;
Municipal infrastructure power distribution: used for high-voltage power distribution in urban rail transit and large data centers, meeting high safety and low fault operation standards.
