What is the 12KV/630A/3POS Solid-Insulated RMU Core Assembly ?
In the construction and upgrading of modern power distribution networks, the safety, reliability, and flexibility of equipment are the cornerstones of ensuring stable grid operation. The SW71-12KV/630A/3POS Solid-Insulated RMU Core Assembly is a next-generation distribution core component designed to meet these demands. With its compact design, superior insulation performance, and modular architecture, it delivers an efficient, safe solution for medium-voltage distribution scenarios.
The SW71-12KV/630A/3POS is the core component of solid-insulated ring main units (RMUs). It innovatively integrates a vacuum circuit breaker, load switch, disconnector, and grounding switch into a compact, front-to-rear layout. Operating mechanisms are positioned at the front for convenient operation and maintenance by field personnel, while primary circuit components (vacuum interrupter, disconnector, grounding switch) are fully encapsulated in epoxy resin using APG (Automatic Pressure Gelation) technology. This design completely isolates internal components from the external environment, delivering insulation performance and electrical performance far exceeding those of traditional air-insulated equipment.
Core Technical Advantages
1. All-Condition Insulation Protection
The APG epoxy resin fully encapsulated construction isolates primary circuit components from the outside world, enabling stable operation in harsh environments such as humidity, condensation, dust, and salt fog. This drastically reduces equipment maintenance costs, making it ideal for urban distribution networks, rail transit, data centers, and other scenarios with high reliability requirements.
2. Modular & Flexible Configuration
Built on a modular design, the product can be flexibly configured into a variety of functional units to meet the differentiated needs of different users. Whether used as a feeder unit, metering unit, or tie unit, it enables rapid adaptation, shortening project cycles and enhancing the scalability of distribution systems.
3. Highly Reliable Mechanical Interlocking
The spring-operated mechanisms of the main switch and disconnector feature reliable mechanical interlocking, which physically prevents misoperation. This simplifies equipment components while significantly improving operational reliability, providing solid protection for the safety of maintenance personnel.
4. Versatile Operation Options
The disconnector supports both manual and motorized operation. The optional motorized operation caters to remote control and unattended distribution scenarios, facilitating the upgrade of distribution systems toward intelligence and automation.
Application Scenarios
Thanks to its compact structure and outstanding performance, the SW71-12KV/630A/3POS Core Assembly is widely used in:
Urban Grid Renovation: Its high integration saves land resources in space-constrained urban centers and old residential areas, improving distribution network safety.
Industrial & Commercial Distribution: Provides reliable power distribution and fault protection for critical loads such as factories, shopping malls, and data centers.
Rail Transit & New Energy: Adapts to complex operating conditions in subway systems, photovoltaic power stations, and other scenarios to ensure continuous power supply.
About Us
We specialize in the R&D and manufacturing of medium-voltage distribution equipment, driving product upgrades through technological innovation. The SW71-12KV/630A/3POS Core Assembly embodies our profound technical expertise in solid insulation, aiming to provide safer, more efficient distribution solutions to global users. From product design to manufacturing, we strictly adhere to international standards to ensure every unit operates reliably under harsh conditions, making us your trusted distribution partner.