SF6-free Dead Tank Vacuum Circuit Breaker China manufacturer-145 kV
Key attributes
| Brand | ROCKWILL |
| Series | RVD |
| Rated voltage | 145kV |
| Rated frequency | 60Hz |
| Rated normal current | 3000 A |
| Rated break time | 50 ms |
| Rated short-circuit breaking current | 63kA |
Description
The RVD-145 Dead Tank Vacuum Circuit Breaker, launched by ROCKWILL, is a gas-insulated switchgear with a voltage rating of up to 145 kV. Its core features include the use of clean air as the insulation medium combined with vacuum interruption technology, aiming to achieve zero greenhouse gas emissions and zero global warming potential in power transmission.
Product Showcase Video
Main Characteristics
Eco-Friendly Technology, Zero Environmental Impact:
- Zero SF₆ and other F-gases: Completely eliminates the use of traditional SF₆, a potent greenhouse gas.
- Zero greenhouse gas emissions: The insulation medium is clean air (80% nitrogen, 20% oxygen), which is safe and can be released directly into the atmosphere without contributing to the greenhouse effect.
- Zero GWP: Features a Global Warming Potential of zero.
Safe and Reliable, Zero Health Risks
- Non-toxic insulation gas: Clean air is non-toxic and harmless, ensuring operator safety.
- No toxic decomposition products: The interruption process occurs in a vacuum, preventing the generation of harmful substances.
- No special safety measures required during maintenance: Thanks to the inherent safety of the gas.
- No gas disposal required at end-of-life: Simplifies the decommissioning process.
Simple Operation, Zero Regulatory Burden
- No gas handling regulations or density checks: Eliminates the routine gas monitoring and maintenance required for SF₆ equipment.
- No gas reporting and accounting: Complies with and exceeds current andpotential future legislation restricting F-gases.
- No F-gas related training: Reduces training costs and complexity.
Excellent Performance, Zero Compromise
- Proven technology: Based on over 40 years of experience in medium-voltage vacuum interruption technology and more than 10 years in high-voltage applications up to 145 kV.
- High reliability: Delivers excellent interrupting performance at rated nominal current and rated short-circuit current without degradation.
- Low maintenance costs: The vacuum interrupter is hermetically sealed and maintenance-free over its entire service life, resulting in low operational costs throughout the lifecycle.
- Long service life: An expected lifetime of over 50 years and a first major inspection interval exceeding 25 years.
- Wide applicability: Suitable for a broad ambient temperature range from -50°C to +55°C. The insulating medium carries no risk of liquefaction, making it particularly suitable for low-temperature applications. It can be installed both indoors and outdoors.
Technical specifications
| Item | Parameters |
|---|---|
| Rated voltage | 145kV |
| Rated frequency | 50/60Hz |
| Rated short‑duration power‑frequency withstand voltage (1 min) | 275kV |
| Rated lightning impulse withstand voltage (1.2/50 us) | 650kV |
| Rated continuous current‑ bus bar / feeder bus coupler | 3150A |
| Rated short‑circuit breaking current | 50kA |
| Rated peak withstand current | 135kA |
| Rated short‑time withstand current (up to 3 s) | 50kA |
| Leakage rate per year and gas compartment (type tested) | <0.1% |
| Drive mechanism of circuit‑breaker | stored energy spring |
| Rated operating sequence | 0‑0.3 s‑C0‑3 min‑CO
|
| interrupter technology | vacuum |
| Insulation medium | clean air |
| Weight of SF6 or other fluorinated green‑house gases | 0 kg |
| Rated filling pressure | 0.8 MPa (abs.) |
| Bay width common pole drive | 1000 mm |
| Bay height depth (depending on bay arrangement) | 3.200/5,500 mm |
| Bay weight (depending on bay arrangement) | 6.0t |
| Ambient temperature range | -50°C +55°C |
| Installation | Indoor/outdoor |
| First major inspection | > 25 years |
| Expected lifetime | > 50 years |
| Standards | IEC/IEEE |
Drawings of RVD-145 SF6-free Dead Tank Circuit Breaker
Dimensions
| RATED MAX. VOLTAGE | 145 kV |
|---|---|
| A (in/mm) | 89.2/2264 |
| B (in/mm) | 73.85/1876 |
| C (in/mm) | 122.9/3120 |
| D (in/mm) | 167.5/4254 |
| E (in/mm) | 51.83/1316 |
| F (in/mm) | 137.4/3490 |
| G (in/mm) | 65.9/1674 |
| H (in/mm) | 107.85/2739.5 |
| I (in/mm) | 97.5/2476 |
| J (in/mm) | 51.83/1316 |
Service environment
| Air temperature | Maximum temperature: +55℃; |
| Minimum temperature: -50℃ | |
| Humidity | Daily average humidity 100%. |
| Above sea level | Maximum installation altitude: 1000m. |
Solutions for SF6-free DTCB
-
Rockwill’s Arc Quenching Technology for MV/HV Circuit Breakers: From Classical Interruption to Intelligent CoordinationRockwill's arc quenching technology system is essentially a microcosm of the power switchgear field's response to the dual challenges of "higher interrupting performance" and "zero environmental impact across the entire lifecycle." Its complete landscape consists of three parts: high-performance hardware arc quenching platforms, stringent standard certification systems, and future-oriented intelligent switching control strategies. This constitutes a capability leap from "being able to interrupt"
Documentation Resource Library SF6-free DTCB
FAQ for SF6-free DTCB
Can you provide type test certificates for the RVD-145 dead tank vacuum circuit breaker?
Yes, we can supply full type test certificates and support third-party witness testing as required for your substation project.
Are there toxic decomposition by-products generated when the RVD-145 dead tank vacuum circuit breaker interrupts faults?
No. Interruption takes place inside the vacuum interrupter, no toxic decomposition substances will be produced. The medium is non-toxic and can be directly vented at end-of-life.
What is the insulation and arc-quenching medium of the RVD-145 dead tank vacuum circuit breaker?
The RVD-145 dead tank vacuum circuit breaker adopts clean air as insulation medium together with vacuum interruption technology, free of SF₆ and any F-gases, with zero GWP.
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