12KV Sf6 High Voltage Ring Main Unit Switchgear

As a leading player in China's power equipment sector, Lugao Power Co., Ltd. specializes in the design, manufacturing, and distribution of 12KV SF6 High Voltage Ring Main Unit  Switchgear. Renowned for its innovative engineering, our products are distinguished by their compact footprint, exceptional performance, and advanced SF6 gas insulation technology—a hallmark of reliability and safety in power distribution systems.

Engineered for industrial, commercial, and utility environments, our RMU switchgear delivers consistent, safe, and efficient operation even under extreme conditions. Built to meet rigorous international standards, it combines low maintenance requirements, space-saving design, and robust durability, making it a trusted solution across diverse industries.

LUGAO 12KV SF6 High Voltage Ring Main Unit: Redefining Power Distribution Excellence

Lugao Power introduces the 12KV SF6 High Voltage RMU Switchgear, a cutting-edge solution designed to optimize power distribution networks. Featuring a fully sealed, gas-insulated structure with SF6 as the insulating medium, this unit is hermetically protected against external environmental factors, ensuring unparalleled stability and longevity.

Its modular design streamlines installation, operation, and maintenance while maximizing space efficiency—ideal for applications with limited infrastructure capacity. Equipped with an intelligent fault monitoring and isolation system, the switchgear enhances grid security and minimizes downtime, guaranteeing continuous power supply reliability.

LUGAO 12KV SF6 High Voltage Ring Main Unit from premium materials such as  aluminum and  stainless steel, the RMU is engineered for exceptional durability and consistent performance across demanding operational cycles. Embracing eco-friendly and sustainable technology, it aligns with modern energy frameworks, offering customizable configurations to suit unique project requirements.

LUGAO 12KV SF6 High Voltage Ring Main Unit Parameter

LUGAO 12KV SF6 High Voltage Ring Main Unit Operating Environment

1. Air temperature: Maximum temperature: +40℃; Minimum temperature:-35℃

2. Humidity: Monthly average humidity 95%; Daily average humidity 90% .

3. Altitude above sea level: Maximum installation altitude: 2500m

4. Ambient air not apparently polluted by corrosive and flammable gas, vapor etc.

5. No frequent violent shake.

LUGAO 12KV SF6 High Voltage Ring Main Unit Features

The unit’s enclosure, access doors, and upper chamber undergo precision spray coating, ensuring a durable, uniform protective finish that safeguards against environmental corrosion and mechanical wear. All cabinets incorporate a primary grounding busbar designed to enable secure grounding close to the cabinet’s structural framework. Metal components—including grounding switches and interlocking mechanisms—are meticulously bonded to the grounding busbar, while copper braid connections are utilized at screw-fastened joints to ensure electrical continuity and fault current dissipation.

To mitigate internal overpressure and arc-related risks, a pressure relief panel is strategically integrated into the cabinet’s rear structure, designed to safely regulate gas discharge in rare fault scenarios. The upper busbar compartment is secured with tamper-resistant screws, allowing easy external access for busbar connections during installation or maintenance. The upper auxiliary devices chamber offers versatile configuration options, accommodating terminal blocks, control modules, and other components. By elevating this sub-compartment, the design optimizes space for relay protection systems, enhancing operational efficiency.

Notably, the load break switch and grounding switch feature a modular interlocking mechanism, while the grounding switch and access door employ a positive interlock system. Through a defined operational sequence—closing the door, engaging the grounding switch, and activating the load break switch—automatic interlock functionality is achieved. This sequential logic minimizes operational errors, prevents unauthorized access during live operation, and reinforces overall system safety protocols, ensuring compliance with rigorous industrial safety standards.

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