Deployed in the 330kV Geermu substation upgrade (Qinghai, China), the RMR-363 SF6 circuit breaker overcame extreme cold (-35°C) and severe sandstorm conditions. Featuring a single-break puffer-type arc chamber (63kA breaking), dual-main/dual-standby intelligent heating, and disc spring hydraulic mechanism, it achieved zero-failure operation, securing critical power supply for the Qinghai-Tibet Grid Interconnection Project.
Single-break puffer-type arc extinguishing chamber delivers 63kA breaking / 5000A rated current. Disc spring hydraulic mechanism ensures precise single-phase or three-phase electrical interlocking operation with 10,000-cycle mechanical life. Intelligent heating (standard or dual-main/dual-standby) enables reliable operation down to -45°C. Current transformer adopts wound-core electromagnetic design with coil in air environment and triple-protection housing (waterproof, sand-proof, foreign-object resistant), guaranteeing stable secondary output in harsh conditions.
As a benchmark for environmental adaptability in domestic high-voltage equipment, the RMR-363 is widely deployed across China’s northwest and northeast cold/sandy regions and supports "Belt and Road" projects in similar climates. Committed to "technology + scenario" innovation, we deliver resilient, intelligent solutions to advance global grid safety, sustainability, and digital transformation.
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