Outdoor live tank vacuum circuit breaker 24kV 36kV 40.5kV 52kV

The RVB Outdoor Live Tank Vacuum Circuit Breaker Rockwill offers a comprehensive outdoor vacuum circuit breaker product family, with its core purpose being to provide reliable, environmentally friendly, and long-lasting switch solutions for medium and high-voltage power distribution networks.

• Core Technology Unified: The entire product family employs vacuum arc extinction technology (oil-free and SF₆-free), equipped with reliable spring operating mechanisms. Both mechanical and electrical endurance are as high as 10,000 operations, complying with international standards such as IEC.

• Complementary Technical Approaches: The family addresses diverse needs through two structural types:

1. Compact and Lightweight Type: Utilizes epoxy resin solid-pole technology, featuring a compact structure and light weight (110-165kg). It is suitable for voltage classes of 12-36kV and is an economical choice for space-constrained scenarios.

2. High-Performance Heavy-Duty Type: Employs classic porcelain shell insulation technology, characterized by a robust structure and high capacity. It covers higher voltage ratings up to 40.5kV and larger currents up to 2500A, making it suitable for demanding environments like main power grids.

• Comprehensive Application Coverage: Leveraging these differentiated technical approaches, the RVB series provides one-stop solutions for a wide range of applications, from branch line protection to large substations.

• Summary: The RVB product family adopts a platform-based design centered on vacuum technology. By integrating two mainstream technical paths—solid-pole and porcelain shell insulation—it achieves comprehensive and flexible coverage of application requirements from medium voltage to high voltage in the market.

Product Structure

Core Arc Extinguishing & Insulation Unit

• Vacuum serves as the arc extinguishing and insulating medium, eliminating sulfur hexafluoride and delivering long service life.

• Solid-encapsulated pole: The interrupter is fully encapsulated with epoxy resin and coated with fluorosilicone rubber, featuring strong anti-pollution flashover and anti-aging performance for compact and lightweight design.

• Porcelain insulation structure: Classic high-voltage insulation structure with outstanding mechanical strength and insulation capacity, applicable to high voltage and harsh working conditions.

Spring Operating Mechanism

• Adopts maintenance-free spring driving structure. Motor-driven spring energy storage enables automatic reclosing. Compatible with AC and DC power supplies. Equipped with anti-pumping protection, manual operation switch, breaker status and spring charging indicators for safe and intuitive operation.

Frame & Connection Structure

• High-strength steel frame firmly supports all components and allows installation of additional equipment such as current transformers. Three poles operate synchronously. Standard wiring terminals are equipped, and customized connectors are available for easy grid connection.

Optional Accessories

• Built-in or external protective and measuring current transformers are available for relay protection and current monitoring. Shunt trip coil can be selected. Customized designs are supported for extended creepage distance, extreme temperature and high-altitude operation.

Technical Details

Service environment

• Air Maximum temperature: +45℃;

• Air Minimum temperature: -40℃

• Humidity: Daily average humidity 100%.

• Above sea level: Maximum installation altitude: 1000m.

If it needs to be installed in plateau areas with an altitude higher than 1,000 meters, it is essential to consult with the manufacturer to take necessary measures to strengthen insulation during the ordering process.

Application Scenarios

• Conventional substations

• Wind farm collector circuits

• Solar power plant switchgear system

• Railway traction power supply

The product features SF6-free design, compact structure and excellent high-altitude adaptability.