High reliability SF6-free Dead Tank Circuit Breaker-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
Product Overview
Based on this expertise, we have developed a SF6-free dead tank circuit breaker (DTCB) that is very similar to its SF6 predecessor. Using our g3 insulating and switching SF6-free technology, the new RVD-145 remains compact with the same footprint. Performance and life-cycle costs remain similar while offering a significant decrease in carbon footprint.
The SF6-free gas mixture used in the new RVD-145 works on the same well-known principle for insulation and breaking purposes as that of SF6 gas. Thus, the operational and maintenance procedures are similar to SF6 dead tank circuit breakers.The g3 gas is a mixture of carbon dioxide (CO2) with oxygen (O2) and an additive (C4F7N), whose physical properties are essential to g3. Its contribution to global warming is significantly lower than that of SF6 gas: reduced by roughly 99% on average.
Main Characteristics
- Advanced self-blast interrupters
- Durable low-energy spring/spring operated mechanisms
- 2 μs chopped wave 838 kV
- Zero bar withstand capability
Ratings
|
IEC |
VALUE |
UNITS |
|---|---|---|
|
Rated voltage |
145 |
kV |
|
Rated frequency |
60 |
Hz |
|
Rated insulation level • at power frequency, dry |
315 |
kV |
|
275 / 315 |
kV |
|
|
Lightning impulse |
650 |
kV |
|
Rated normal current |
3000 |
A |
|
Rated short-circuit breaking current |
63 |
kA |
|
Rated break time |
50 |
ms |
|
Rated operating sequence |
O-CO-15s-CO / O-0.3s-CO-180s-CO |
|
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 |
Technical Data
| Ambient temperature range* | -30° to +40°
|
Celsius/Fahrenheit |
| High seismic capability in accordance with IEEE 693-2018 | ||
| Weight (without current transformers) | 4,413/2,006 | lb/kg |
Solutions for SF6-free DTCB
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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"
