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SF₆-Free Gas-Insulated Ring Main Unit
SF₆-free gas-insulated ring main unit adopts clean air as the insulating medium. As a compact gas-insulated metal-enclosed switchgear, it features compact footprint, high reliability, superior safety and maintenance-free operation. It has a rated voltage up to 24 kV, rated current up to 630 A and breaking current up to 20 kA. It is usually used as RMU in secondary distribution networks.
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SF₆-Free & Reliable Insulation
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Modular & Flexible Design
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Reliable Operation Under High-Altitude Conditions
Product Highlights
SF₆-Free & Reliable Insulation
Clean air insulation, GWP < 1.
Modular & Flexible Design
Modular design with a compact structure, allowing flexible configuration of each cabinet type. It supports side-by-side and top cabinet expansion, with expandable interfaces on both left and right sides.
Reliable Operation Under High-Altitude Conditions
Meets installation and operation requirements in high-altitude areas: standard applicable altitude up to 2000 m, and up to 4000 m for special environments.
Technical Specification
Rated Voltage
Maximum rated voltage: 24 kV
Rated Current
Maximum rated current: 630 A
Rated Short-Time Withstand Current
Maximum rated short-circuit breaking current: 20 kA
Rated Duration of Short-Circuit
3s
Leakage Rate per Year
≤0.05%
