Description

A Ring Main Unit designed, manufactured and fully type-tested according to IEC 62271-200, NG7 is widely used in power distribution systems, such as utilities, industries, buildings and new energy power stations.

• SF6 Gas Insulation：Superior dielectric properties of SF6 gas ensure excellent insulation performance, withstanding high voltage and reducing the risk of flashovers, even in humid or dusty conditions.​
• Compact & Space-Saving：Slimmer cabinet design compared to air-insulated switchgear, saving up to 40% installation space—perfect for urban areas with limited room.​
• High Reliability for Ring Networks：Optimized for ring main unit topology, supporting looped power supply and rapid fault isolation to minimize downtime in secondary distribution systems.​
• Low Maintenance：Hermetic gas enclosure reduces leakage risks (≤0.1% per year) and extends maintenance intervals, lowering long-term operational costs.​
• Enhanced Safety：Equipped with internal arc protection (AFLR) and interlocking mechanisms to prevent unauthorized operation, ensuring personnel and equipment safety.

Parameters

• SF6 gas-insulated switchgear
• For secondary distribution
• 12kV, 630A, 25kA
• 24kV, 630A, 20kA
• Customer Benefits:
• Safe & Reliable
• Maintenance free
•  Small in size
• Easy to install
• Smart function