| Marka | ROCKWILL |
| Seri | RHB |
RHB Live Tank SF₆ Circuit Breaker uses self-blast arc extinguishing and three-phase porcelain post structure with CT spring mechanism and pointer density relay. Designed for outdoor 50Hz transmission network for load/fault current switching, available for single/three-pole switching and auto-reclosing, outstanding for low operating power and high reliability.
Self-blast arc extinction design minimizes operating power;
Three-phase outdoor porcelain post insulation, strong environmental adaptability;
Pointer density relay continuously monitors SF₆ status to guarantee safe operation;
CT-type spring mechanism, stable action, low noise & easy installation.
| Item | Unit | 145kV | 252kV | 363kV |
|---|---|---|---|---|
| Rated voltage | kV | 145 | 252 | 363 |
| 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 | ||
| 1min power-frequency withstand voltage (earth) | kV | 275 | 460 | 460 |
| 1min power-frequency withstand voltage (across open contacts) | kV | 315 | 530 | 530 |
| Rated lightning impulse withstand voltage, 1.2/50 μs (earth) | kV | 650 | 1050 | 1175 |
| Rated lightning impulse withstand voltage, 1.2/50 μs (across open contacts) | kV | 750 | 1200 | 1380 |
| Rated filling pressure (abs. at 20 ℃) circuit-breaker | MPa | 0.6 | ||
| Minimum functional pressure (abs. at 20 ℃) circuit-breaker | MPa | 0.5 | ||
| Ambient temperature range | ℃ | -30～+40 | ||
| Type of installation | — | Outdoor | ||
| Partial discharge | pC | ＜5 | ||
| Annual SF₆ leakage rate | — | ＜0.5% | ||
| Maintenance cycle | Year | 30 |
Upon trip signal, trip spring drives the integrated moving assembly (cylinder, moving arc contact & connecting rod) downward. Main contacts separate first, shifting circuit current onto closed arc contacts; arc generates once arc contacts part.
For short-circuit breaking, massive arc energy heats surrounding SF₆ gas and feeds high-temperature airflow into thermal expansion chamber to build high-pressure cold gas, closing the check valve. At current zero-crossing, high-pressure gas blasts across contact gap to quench arc efficiently. Meanwhile, compression chamber’s excess pressure opens bottom elastic pressure relief valve to release redundant gas pressure, drastically cutting required operating work of the spring mechanism and optimizing breaking performance.
LW10B \ lLW36 \ LW58 serisi ürünler örnekleme kitapçığında, ABB'nin LTB serisine dayalı olarak geliştirilmiş porselen sütunlu SF₆ devre kesicileridir, 72.5kV-800kV voltaj kaplaması ile, Auto Buffer ™ kendi enerjisini sağlayan söndürme teknolojisi veya vakum söndürme teknolojisi kullanılarak, entegre yay/motor sürücülü işletim mekanizmasıyla, çeşitli özelleştirilmiş hizmetleri destekler, 40.5-1100kV tam voltaj seviyelerini kapsar, çok iyi modüler tasarım ve güçlü özelleştirme yeteneğine sahiptir, farklı elektrik şebekesi yapılarına esnek uyum için gerekli projelere uygundur. Çin'de üretilmiştir, hızlı küresel hizmet yanıt hızına, yüksek lojistik verimliliğine ve makul bir fiyata yüksek güvenilirliğe sahiptir.
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