| Thương hiệu | ROCKWILL |
| Chuỗi | RHB |
Equipped with CT-type spring mechanism, this outdoor live tank SF₆ breaker serves 50Hz three-phase grid for circuit control and protection, allowing single/three-pole switching and auto-reclosing.
With three-phase post porcelain structure and self-blast arc extinction, SF₆ fills all poles for insulation and arc quenching. Pointer density relay tracks gas status. Compact, low-power, low-noise and easy to install; customization supported.
Three-phase post porcelain construction: Single shared spring mechanism for synchronized three-pole operation, neat compact layout for outdoor installation.
Integrated SF₆ gas system: Interconnected gas chambers across three poles; SF₆ serves as insulation & arc-quenching medium to guarantee steady performance.
Pointer density relay: Real-time SF₆ pressure & density monitoring for early fault warning and safe running.
Self-blast arc extinction: Lower required operating power and improved mechanical efficiency.
Customization available: Tailored design to satisfy individual project requirements, consult our sales team for details.
RHB-252
| Item | Unit | Parameter |
|---|---|---|
| Rated voltage | kV | 252 |
| Rated frequency | Hz | 50/60 |
| Rated current | A | up to 5000 |
| Rated short-time withstand current, up to 3 s | kA | up to 63 |
| Rated peak withstand current | kA | up to 158 |
| Rated short-duration power-frequency withstand voltage, 1 min | kV | 460 |
| Power-frequency withstand voltage, 1 min across open contacts | kV | 530 |
| Rated lightning impulse withstand voltage, 1.2/50 μs | kV | 1050 |
| Rated lightning impulse withstand voltage, 1.2/50 μs, across open contacts | kV | 1200 |
| Rated filling pressure (abs. at 20 ℃) circuit-breaker | MPa | 0.6 |
| Minimum functional pressure (abs. at 20 ℃) circuit-breaker | MPa | 0.5 |
| Temperature range (ambient) | ℃ | -30～+40 |
| Type of installation | — | outdoor |
| Partial discharge | pC | ＜5 |
| Annual SF₆ leakage rate | — | ＜0.5% |
| Maintenance cycle | Year | 30 |
RHB-420
| Item | Unit | Parameter |
|---|---|---|
| Rated voltage | kV | 420 |
| Rated frequency | Hz | 50/60 |
| Rated current | A | up to 5000 |
| Rated short-time withstand current, up to 3 s | kA | up to 63 |
| Rated peak withstand current | kA | up to 158 |
| Rated short-duration power-frequency withstand voltage, 1 min | kV | 740 |
| Power-frequency withstand voltage, 1 min across open contacts | kV | 850 |
| Rated lightning impulse withstand voltage, 1.2/50 μs | kV | 1425 |
| Rated lightning impulse withstand voltage, 1.2/50 μs, across open contacts | kV | 1550 |
| Rated filling pressure (abs. at 20 ℃) circuit-breaker | MPa | 0.6 |
| Minimum functional pressure (abs. at 20 ℃) circuit-breaker | MPa | 0.5 |
| Temperature range (ambient) | ℃ | -30～+40 |
| Type of installation | — | outdoor |
| Partial discharge | pC | ＜5 |
| Annual SF₆ leakage rate | — | ＜0.5% |
| Maintenance cycle | Year | 30 |
RHB-550
| Item | Unit | Parameter |
|---|---|---|
| Rated voltage | kV | 550 |
| Rated frequency | Hz | 50/60 |
| Rated current | A | up to 5000 |
| Rated short-time withstand current, up to 3 s | kA | up to 63 |
| Rated peak withstand current | kA | up to 158 |
| Rated short-duration power-frequency withstand voltage, 1 min | kV | 830 |
| Power-frequency withstand voltage, 1 min across open contacts | kV | 950 |
| Rated lightning impulse withstand voltage, 1.2/50 μs | kV | 1675 |
| Rated lightning impulse withstand voltage, 1.2/50 μs, across open contacts | kV | 2125 |
| Rated filling pressure (abs. at 20 ℃) circuit-breaker | MPa | 0.6 |
| Minimum functional pressure (abs. at 20 ℃) circuit-breaker | MPa | 0.5 |
| Temperature range (ambient) | ℃ | -30～+40 |
| Type of installation | — | outdoor |
| Partial discharge | pC | ＜5 |
| Annual SF₆ leakage rate | — | ＜0.5% |
| Maintenance cycle | Year | 30 |
Ambient temperature: -30℃～+40℃
Altitude: ＜1000m
Max wind speed: ＜34m/s
Daily temperature variation: ＜25℃
Solar irradiance: ＜0.1W/cm²
Monthly average RH: ＜90%
Ice coating: ＜10mm
Seismic resistance: Horizontal＜0.2g, Vertical＜0.1g
Mounting: Outdoor
RHB-245
Sản phẩm series LW10B \ lLW36 \ LW58 trong sách mẫu là các công tắc đường dây sứ SF₆ dựa trên cải tiến của series ABB'LTB, với phạm vi điện áp từ 72.5kV-800kV, sử dụng công nghệ dập hồ quang tự cung cấp năng lượng Auto Buffer ™ hoặc công nghệ dập hồ quang chân không, tích hợp cơ chế hoạt động bằng lò xo/động cơ, hỗ trợ các dịch vụ tùy chỉnh đa dạng, bao gồm toàn bộ mức điện áp từ 40.5-1100kV, với thiết kế mô-đun nổi bật và khả năng tùy chỉnh mạnh mẽ, phù hợp cho các dự án yêu cầu thích ứng linh hoạt với các kiến trúc lưới điện khác nhau. Sản xuất tại Trung Quốc, với tốc độ phản hồi dịch vụ toàn cầu nhanh chóng, hiệu quả logistics cao, và độ tin cậy cao với giá cả hợp lý.
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