Low Failure Rate Sf6-Free Insulated Ring Main Unit for Substation

Low Failure Rate Sf6-Free Insulated Ring Main Unit for Substation. SF6-Free Eco-Friendly Design: Eliminates sulfur hexafluoride using clean dry air insulation, reducing environmental impact. High Electrical Performance: Rated up to 24kV, 630A, and 20kA for robust voltage withstand and short-circuit protection. Advanced Dry Air Insulation: Innovative engineering provides superior dielectric performance comparable to traditional SF6 switchgear. Hermetically Sealed Design: Fully grounded metal enclosure ensures maintenance-free operation and exceptional safety. Comprehensive Certifications: Certified by STL, CE, and GB, complying with international IEC and GB/T standards. Low Annual Leakage Rate: Features an ultra-low leakage rate of 0.01% per year for long-term reliability. High Mechanical Life: Circuit breaker and load switch offer 10,000 operations; disconnectors and earthing switches offer 3,000. IP68 Protection Rating: Provides complete dust and water protection for harsh operating conditions.