Ring-Main-Einheit RMU SF6-gasisolierte MS-Schaltanlage

Product Overview

Das SF6 gas insulated Ring Main Unit (RMU) is a specialized medium and high voltage electrical equipment designed for modern power distribution systems. Different from conventional air-insulated switchgears, it takes inert SF6 gas as the exclusive insulating and arc-quenching medium, which can quickly extinguish electric arcs and isolate circuits safely. This core technical design fundamentally optimizes the structural performance and operational stability of the equipment, enabling the RMU switchgear to adapt to diverse complex power distribution environments and meet the high-standard power supply demands of various industries.

Core Product Advantages

1.Ultra-Miniaturized Structure, Space-Saving

Benefiting from the excellent high-insulation performance of SF6 gas, the overall volume of the RMU gas cabinet is reduced by more than 50% compared with traditional air-insulated distribution cabinets. The compact and integrated structural design greatly saves installation space, making it perfectly suitable for scenarios with strict space limitations.

2.All-Weather Operational Reliability

The equipment adopts a fully sealed enclosed structure, which completely isolates internal core components from the external environment. It is not affected by harsh factors such as high humidity, dust pollution, corrosive dirt and high altitude, ensuring consistent and stable operating performance in various complex working conditions.

3.Completely Maintenance-Free Operation

SF6 gas boasts extremely high chemical stability and inert characteristics. The internal conductive contacts and core components work in a stable inert gas environment, with almost no oxidation, wear or aging. It effectively eliminates the need for frequent daily maintenance and component replacement, greatly reducing later operational costs.

4.30+ Years Ultra-Long Service Life

With mature structural design, high-quality raw materials and stable gas insulation system, the RMU switchgear achieves a design service life of more than 30 years. It supports long-term continuous and stable operation, providing durable power distribution guarantee for projects.

5.High Safety & Low Noise Operation

The product features flame-retardant and fire-proof performance with zero fire risk during operation. Meanwhile, the optimized internal structural design effectively reduces operating noise, realizing safe, silent and environmentally friendly equipment operation.

Wide Application Scenarios

Power Substations: Ideal for incoming lines, outgoing lines and bus connection circuits of medium and high voltage power distribution systems, ensuring stable power transmission and circuit protection for grid substations.

Industrial Power Supply: Adaptable to harsh industrial environments including mining, metallurgy, chemical engineering and other high-corrosion, high-dust working scenarios, meeting high-reliability industrial power consumption demands.

Urban Power Grid Construction: Perfect for space-limited key urban facilities such as subways, airports and large-scale data centers, supporting precise and efficient urban power distribution.

Renewable Energy Projects: Applicable to voltage boosting and grid connection links of photovoltaic power stations and wind farms, adapting to fluctuating new energy power generation loads and realizing stable grid integration.

Customization & Standardization Advantages

To meet diverse project demands, our RMU SF6 gas cabinet supports free selection of international famous brand components including ABB and Siemens. We provide full-coverage ODM and OEM customized services, and the entire product series strictly complies with the international standard IEC 62271-200, ensuring universal compatibility and authoritative quality certification for global projects.

Intelligent Production Strength

We are equipped with more than 220 sets of advanced intelligent production equipment, building a fully automated production cluster. The production line supports 72-hour unattended continuous operation, with a capacity utilization rate of over 95%. The intelligent manufacturing mode effectively improves production efficiency and product consistency, shortening the overall order delivery cycle by 30% and realizing fast and high-quality order delivery.

Strict Quality Control System

All equipment will undergo a full set of professional project tests and 72-hour continuous operation inspection before factory delivery. We strictly verify the operational stability of the equipment in extreme environments to eliminate potential quality risks. Backed by reliable quality performance, we provide an ultra-long 30-year quality protection commitment for all products.

Global Full-Cycle Service

We provide 24/7 global customer response service, quickly responding to technical consultation, after-sales support and project customization needs of customers worldwide. Meanwhile, we provide customized full life cycle maintenance solutions, which can effectively extend the overall service life of equipment by 30%, creating long-term value for customers’ projects.

Engineering Scope and Selection Inputs

An RMU should be evaluated from the cable network layout, required switching and protection functions, installation environment, and operating procedure. Confirm the exact module arrangement and gas-handling obligations for the project location.

Verwandte ingenieurwissenschaftliche Lektüre

Ring Main Unit Selection Guide · SF6 RMU Outdoor Installation Guide

Für eine technische Überprüfung, Shenheng Power kontaktieren mit dem genehmigten ein线igen Diagramm, den Standortbedingungen, den geforderten Standards und den Lieferanforderungen.