Original Manufacturer Dead-Tank SF6 Circuit Breaker-170kV

Features

• 9-Grade Seismic Resistance: Low-center-of-gravity dead-tank design withstands up to 9-degree earthquake intensity, ensuring rock-solid performance in seismic-prone areas a proven advantage of the RHD series.
• Ultra-Efficient Arc Extinction & Long Lifespan: The self-blast puffer principle combined with SF6's strong electronegativity enables rated short-circuit breaking current up to 63kA. Boasting over 10,000 mechanical cycles and low contact wear, it slashes replacement and maintenance costs while maintaining stable operation.

• Premium Insulation & Safety Design: The grounded metal tank completely encloses live parts, eliminating external flashover risks and making it ideal for harsh environments. Equipped with anti-misoperation interlocking devices and precision density relays, it ensures uncompromised quality and operational safety.
• Modular Flexibility for Any Layout: On-demand built-in current transformers (up to 15 for measurement/protection), integrated voltage dividers, and standardized module interfaces enable flexible combinations. Ideal for space-constrained substations and diverse outdoor design needs.
• Extreme Environmental Adaptability: Thrives in harsh conditions: -50℃ to +55℃ ambient temperature, optimized for altitude up to 3,000m, and Class IV air pollution. Resists heavy icing and strong winds, providing reliable protection anywhere from polar regions to tropical zones.
• Maintenance-Free Spring Mechanism: Oil-free spring-operated structure delivers stable performance, low noise, and high reliability. With an ultra-low gas leakage rate (<0.1% per year) and long service intervals, it cuts long-term operational workload to zero.

Technology Parameters

Drawings of RHD-170 Dead-Tank SF₆ Circuit Breaker

Physical Photograph of RHD-170 Dead-Tank SF₆ Circuit Breaker