Lucy AegisPlus Ring Main Unit
SF6 insulated with vacuum circuit breaker or fuse switch protection.
AegisPlus builds upon the strong foundations of Aegis, and the automation ready units now have integrated Remote Terminal Units (RTUs) in the form of the next generation Gemini 3; enabling instant smart grid functionality.
AegisPlus builds upon the strong foundations of Aegis, serving as an RMU range enhancement that offers additional features and benefits to meet the evolving technical and functional needs of customers across the globe. The automation ready units now have integrated Remote Terminal Units (RTUs) in the form of the next generation Gemini 3; enabling instant smart grid functionality.
The structural tank welding is performed by a robotic welding process to ensure high reliability with a product life expectancy of more than 30 years. The housing is fully treated using zinc coated steel and electro statically applied, oven cured paint to resist degradation from pollution and harsh climatic conditions. AegisPlus offers both extensible and non-extensible options with numerous functional configurations insulated in a single, sealed tank.
The range has been built for the toughest environments, with an option to convert units from indoor to outdoor; extending protection to IP54. All of these enhancements have been achieved whilst reducing the spatial footprint, resulting in a design that is more compact and easy to install. A range of advanced air metering units is also available, which has been designed from the ground up with AegisPlus in mind to offer full metering capability.
Characteristics
- 12, 17.5 and 24 kV with up to 630 A ratings
- Extensible and non extensible range with a wide choice of configurations
- Any combination of load break switches, vacuum circuit breakers or fuse switch available
- No on-site SF6 gas handling for installation AF, AFL and AFLR internal arc protection
- Intuitive single line mimic diagram
- Horizontal cable terminations with DIN 400 Type C bushings
- Front access earth and test facility
- Integrated motorisation for remote control operation
- Vacuum circuit breaker protection with relays or TLF and fuse switch protection for transformers
- Suitable for Indoor (IP41) and outdoor (IP54) applications
- Integrated Gemini 3 RTU for easy SCADA connection, with optional automatic transfer scheme (ATS)
- Fully interlocked, anti-reflex mechanisms with padlocks
- Maintenance free with 30 years life expectancy
Description | Unit | Size | ||
Rated voltage | kV | 12 | 17.5 | 24 |
Rated current: ring switch | A | 630 | 630 | 630 |
Rated current: vacuum circuit breaker | A | 250 / 630 | 250 / 630 | 250 / 630 |
Fuse switch | A | 200 | 200 | 200 |
Impulse withstand voltage | kV | 75 / 85 | 95 / 110 | 125 / 145 |
Power frequency withstand voltage | kV | 28 / 32 | 38 / 45 | 50 / 60 |
Short time withstand current | kA 3s | 21 | 21 | 21 |
Short circuit making current | kA | 52.5 | 54.6 | 52.5 |
Short circuit breaking current | kA |
| 21 |
|
Internal arc rating | kA 1s |
| 21 |
|
Range | Extensibility | |||||||
Extensible | Non-extensible | |||||||
Configuration | 1 – Way | 2 – Way | 3 – Way | 4 – Way | 5 – Way | 3 – Way | 4 – Way | 5 – Way |
Load break switch and / or 250 A circuit breaker | ü | ü | ü | ü | ü | ü | ü | ü |
Load break switch and / or 630 A circuit breaker | ü | ü | ü | ü | ü | ü | ü | ü |
Other literature available on request
Reports, drawings, technical data sheets, installation instructions, O&M guidelines
