| Brand | ROCKWILL |
| Model NO. | Low‑maintenance live tank vacuum circuit breaker supplier-24kV to 145kV |
| Rated voltage | 145kV |
| Rated frequency | 50/60Hz |
| Series | RVB |
The 24kV - 145kV Live tank Vacuum circuit breakers are advanced high - voltage electrical devices. Using vacuum as the arc - extinguishing and insulating medium, they leverage vacuum's superior insulation and rapid arc - quenching capabilities to instantly interrupt fault currents, preventing arc re - ignition and ensuring grid stability.
The live tank design encapsulates the vacuum interrupters within a metal tank filled with insulating gas, enhancing insulation, mechanical robustness, and environmental adaptability to withstand harsh weather and external impacts. Available in multiple voltage ratings, these breakers suit diverse high - voltage transmission and distribution scenarios, from urban power grids to industrial systems.
Equipped with precise operating mechanisms, they offer long mechanical life, swift and accurate operations, minimal maintenance, excellent short - circuit current interruption, and anti - aging performance, making them an ideal choice for reliable and safe high - voltage power transmission.
Wide Voltage Range: Covers 24kV - 145kV, suitable for various high - voltage power systems.
Vacuum Arc Extinction: Utilizes vacuum for rapid arc quenching and reliable insulation.
Live Tank Design: Encased in gas - filled metal tanks for enhanced mechanical strength and environmental resistance.
Efficient Interruption: Quickly cuts off fault currents to safeguard power grids.
Low Maintenance: Long - lasting mechanical operation with minimal upkeep requirements.
RVB-24
| Item | Unit | Specification |
|---|---|---|
| Rated voltage | kV | 24 |
| Rated insulation voltage | kV | 24 |
| Power frequency withstand | kV/min | 70 Dry / 60 wet |
| Impulse withstand voltage | kV peak | 150 |
| Rated frequency | Hz | 50/60 |
| Rated normal current | Amps | 1250/1600/2000/2500/4000 |
| Rated symmetrical breaking capacity | kA rms | 25/31.5 |
| Rated short time withstand current (3s) | kA rms | 25/31.5 |
| Rated making capacity | kA peak | 63/80 |
| Operating sequence | - | O-0.3s-CO-180s-CO，O-0.3s-CO-15s-CO |
| Opening time | ms | 45±10 |
| single capacitor bank breaking current | A | 400…800 |
| back-to-back capacitor bank breaking current | A | 400…800 |
| Arcing time | ms | 5-15 |
| Total breaking time | ms | 50-60 |
| Closing time | ms | 75±10 |
| Weight | kg | 700/750 |
| Operating temperature #1 | ℃ | -25…+40 |
| Tropicalization | - | IEC:60068-2-30 |
| Electromagnetic compatibility | - | IEC 62271-1 、IEC 61000-6-2、IEC 61000-6-4 |
| Solar radiation | W/m2 | 1000 |
| Presence of pollution | - | IEC TS 60815-1 |
| Creepage distance | mm/kV | 25#2 |
| Ice coating | mm | 10 |
| Wind speed | m/s | 34 |
| Earth quake resistance | g | 0.6 |
RVB-36
| Item | Unit | Specification |
|---|---|---|
| Rated voltage | kV | 36 |
| Rated insulation voltage | kV | 36 |
| Power frequency withstand | kV/min | 95 Dry / 80 wet |
| Impulse withstand voltage | kV peak | 200 |
| Rated frequency | Hz | 50/60 |
| Rated normal current | Amps | 1250/1600/2000/2500/4000 |
| Rated symmetrical breaking capacity | kA rms | 25/31.5 |
| Rated short time withstand current (3s) | kA rms | 25/31.5 |
| Rated making capacity | kA peak | 63/80 |
| Operating sequence | - | O-0.3s-CO-180s-CO，O-0.3s-CO-15s-CO |
| Opening time | ms | 45±10 |
| single capacitor bank breaking current | A | 400…800 |
| back-to-back capacitor bank breaking current | A | 400…800 |
| Arcing time | ms | 5-15 |
| Total breaking time | ms | 50-60 |
| Closing time | ms | 75±10 |
| Weight | kg | 850/900 |
| Operating temperature #1 | ℃ | -25…+40 |
| Tropicalization | - | IEC:60068-2-30 |
| Electromagnetic compatibility | - | IEC 62271-1 、IEC 61000-6-2、IEC 61000-6-4 |
| Solar radiation | W/m2 | 1000 |
| Presence of pollution | - | IEC TS 60815-1 |
| Creepage distance | mm/kV | 25#2 |
| Ice coating | mm | 10 |
| Wind speed | m/s | 34 |
| Earth quake resistance | g | 0.6 |
RVB-40.5
| Item | Unit | Specification |
|---|---|---|
| Rated voltage | kV | 40.5 |
| Rated insulation voltage | kV | 40.5 |
| Power frequency withstand | kV/min | 118 Dry / 95 wet |
| Impulse withstand voltage | kV peak | 195 |
| Rated frequency | Hz | 50/60 |
| Rated normal current | Amps | 1250/1600/2000/2500/4000 |
| Rated symmetrical breaking capacity | kA rms | 31.5 |
| Rated short time withstand current (3s) | kA rms | 31.5 |
| Rated making capacity | kA peak | 80 |
| Operating sequence | - | O-0.3s-CO-180s-CO,O-0.3s-CO-15s-CO |
| Opening time | ms | 45±10 |
| single capacitor bank breaking current | A | 400…800 |
| back-to-back capacitor bank breaking current | A | 400…800 |
| Arcing time | ms | 5-15 |
| Total breaking time | ms | 50-60 |
| Closing time | ms | 75±10 |
| Weight | kg | 950 |
| Operating temperature #1 | ℃ | -25…+40 |
| Tropicalization | - | IEC:60068-2-30 |
| Electromagnetic compatibility | - | IEC 62271-1 、IEC 61000-6-2、IEC 61000-6-4 |
| Solar radiation | W/m2 | 1000 |
| Presence of pollution | - | IEC TS 60815-1 |
| Creepage distance | mm/kV | 25#2 |
| Ice coating | mm | 10 |
| Wind speed | m/s | 34 |
| Earth quake resistance | g | 0.6 |
RVB-52
| Item | Unit | Specification |
|---|---|---|
| Rated voltage | kV | 52 |
| Rated insulation voltage | kV | 52 |
| Power frequency withstand | kV/min | 120 Dry / 95 wet |
| Impulse withstand voltage | kV peak | 250 |
| Rated frequency | Hz | 50/60 |
| Rated normal current | Amps | 1250/1600/2000/2500/4000 |
| Rated symmetrical breaking capacity | kA rms | 40 |
| Rated short time withstand current (3s) | kA rms | 40 |
| Rated making capacity | kA peak | 100 |
| Operating sequence | - | O-0.3s-CO-180s-CO，O-0.3s-CO-15s-CO |
| Opening time | ms | 45±10 |
| single capacitor bank breaking current | A | 400…800 |
| back-to-back capacitor bank breaking current | A | 400…800 |
| Arcing time | ms | 5-15 |
| Total breaking time | ms | 50-60 |
| Closing time | ms | 75±10 |
| Weight | kg | 1000 |
| Operating temperature #1 | ℃ | -25…+40 |
| Tropicalization | - | IEC:60068-2-30 |
| Electromagnetic compatibility | - | IEC 62271-1 、IEC 61000-6-2、IEC 61000-6-4 |
| Solar radiation | W/m2 | 1000 |
| Presence of pollution | - | IEC TS 60815-1 |
| Creepage distance | mm/kV | 25#2 |
| Ice coating | mm | 10 |
| Wind speed | m/s | 34 |
| Earth quake resistance | g | 0.6 |
RVB-72.5
| Item | Unit | Specification |
|---|---|---|
| Rated Voltage (Ur) | kV | 72.5 |
| Rated Frequency | Hz | 50 / 60 |
| Rated Short-Circuit Breaking Current | kA | 31.5 / 40 |
| Rated Short-Time Withstand Current (Duration) | kA / s | 31.5 / 40 (4s) |
| Rated Peak Withstand Current | kA | 80 / 100 |
| 1min Power-Frequency Withstand Voltage (to earth / between phases) | kV | 160 |
| 1min Power-Frequency Withstand Voltage (across open contacts) | kV | 185 |
| Rated Lightning Impulse Withstand Voltage (to earth / between phases) | kV | 350 |
| Rated Lightning Impulse Withstand Voltage (across open contacts) | kV | 400 |
| Partial Discharge Level | pC | ＜10 |
| Operating Ambient Temperature | ℃ | −50 ~ +60 |
RVB-145
| Item | Unit | Specification |
|---|---|---|
| Rated Voltage (Ur) | kV | 145 |
| Rated Frequency | Hz | 50 / 60 |
| Rated Short-Circuit Breaking Current | kA | 31.5 / 40 |
| Rated 3s Short-Time Withstand Current | kA | 31.5 / 40 |
| Rated Peak Withstand Current | kA | 80 / 100 |
| 1min Power-Frequency Withstand Voltage (to earth / between phases) | kV | 275 |
| 1min Power-Frequency Withstand Voltage (across open contacts) | kV | 316 |
| Rated Lightning Impulse Withstand Voltage (to earth / between phases) | kV | 650 |
| Rated Lightning Impulse Withstand Voltage (across open contacts) | kV | 812 |
| Partial Discharge Level | pC | ＜10 |
| Operating Ambient Temperature | ℃ | −50 ~ +60 |
| Ambient temperature | ‑30°C ~ +40°C |
| Altitude | ＜1000m |
| Wind speed | ＜34m/s |
| Daily temperature difference | ＜25°C |
| Solar irradiance | ＜ 0.1W/cm² |
| Monthly average relative humidity | ＜90% |
| Ice‑coating thickness | ＜10mm |
| Seismic acceleration resistance | Horizontal ＜0.2g, vertical ＜0.1g |
| Installation location | Outdoor |
ABB’s high-voltage live-tank vacuum breakers are reliable but costly with long lead times. Hitachi Energy is mature yet lacks local high-voltage track records and smart features. Schneider Electric excels in 40.5kV distribution but is limited in voltage range and extreme performance. In contrast, Rockwill offers up to 363kV SF₆-free vacuum solutions with fast local service and spare parts delivery. Featuring robust mechanisms, full smart functions, and superior resistance to extreme cold, heavy salt fog, and short-circuit currents, our breakers ensure long maintenance-free service and lower LCC.
Q:Can Rockwill custom-engineer or modify Live tank Vacuum circuit breaker specifications to meet project-specific requirements?
A:
Rockwill provides comprehensive customized design and parameter modification for live tank vacuum circuit breakers to meet diverse project requirements. Backed by our professional R&D team, we flexibly adjust product structures, technical parameters and environmental adaptability, delivering exclusive tailored solutions in line with various on-site conditions and project standards.
Yes. The product follows IEC tropicalization and EMC standards, all type test data meets IEC requirements, acceptable for global tender projects.
Vacuum interrupter has no need to replace arc-extinguishing medium. With stable mechanical structure and gas-filled live tank design, only simple routine inspection required during long-term operation.
Yes. Customization available for enhanced anti-pollution, anti-corrosion or special altitude adaptation upon request.
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