RHD-145 dead-tank SF6 circuit breaker: 145kV, 2500-4000A, lightning impulse 650/750kV, 3s short-time 31.5-50kA, making peak 100-125kA. For 145kV outdoor substation primary circuits.
RHD‑145 is outdoor dead‑tank SF6 circuit breaker adopting self‑blast arc‑extinguishing principle, three‑phase post porcelain insulator and pointer density relay. It has strict requirements for foundation static/dynamic load and base flatness. It complies with IEC 62271‑100 & GB/T 1984, with custom‑manufacturing and full project solutions available.
Foundation static load 23000 N; horizontal dynamic load 4000 N, upward vertical dynamic load 33000 N (including self‑weight). Foundation height difference ≤2 mm, base‑surface levelness tolerance ≤2 mm.
It complies with IEC 62271‑100 and GB/T 1984. It adopts self‑blast arc‑extinguishing, three‑phase post‑type porcelain insulators and pointer‑type SF6 density relay for outdoor substation application.
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