RHD-72.5 dead-tank SF6 circuit breaker: 72.5kV, 2000-3150A, lightning impulse 325/375kV, short-time 31.5-50kA, making peak 100-125kA. For HV grid switching and short-circuit faults.
This circuit breaker adopts self‑blast arc‑extinguishing principle, three‑phase post‑type porcelain insulator structure and pointer‑type density relay, with mechanical life up to 10 000 times and customized manufacturing available. It complies with IEC 62271‑100 and GB/T 1984 standards, delivering safe, reliable and easy‑to‑install performance with full‑set design, assembly and test solutions.
Factory direct dead tank SF6 circuit breaker for 40.5kV to 66kV systems, delivering reliable and cost-effective high-voltage protection
Three-phase AC dead tank SF6 circuit breaker source manufacturer for 72.5kV systems, delivering reliable high-voltage protection and switching solutions.
High voltage live tank SF6 circuit breaker for 72.5kV, 126kV, 145kV, 252kV, delivering reliable protection for transmission and subtransmission grids.
It complies with IEC 62271‑100 and GB/T 1984. Customized manufacturing and overall solutions including design, assembly and test are available.
Rated SF₆ gas pressure 0.5‑0.6 MPa, annual gas leakage rate ≤0.5%; mechanical life reaches 10 000 operation times.
Energy‑store motor and control circuit adopt DC110 V / DC220 V; heater power supply is AC220 V.
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