Davenham offer package substation solutions where the MV to LV transformer is close coupled to the low voltage switchboard. Providing unrivalled quality, substations are custom built to suit the clients particular space requirements.
In compliance with IEC 61439-2 all systems are fully type tested with ASTA certification up to 6300A, having been independently tested for both temperature rise and short circuit strength. Both naturally ventilated and forced ventilated options are available.
Specification overview
| MV/LV Transformer Ratings | 400 kVA to 4500 kVA |
| LV Busbar System Current Rating | 800A to 6300A |
| LV Busbar System Short Circuit Rating | (50kA/1s) (80 kA/1s) (100kA/1s) |
| Low Voltage Ratings | 400V / 690V |
| Construction Separation | IEC 61439-2, Up to Form 4B Type 7 |
| Cable Access | Top, Bottom, Front or Rear |
| Ingress protection | IP 54, IP 42 or IP 31 |
| Panel Colour | Available in all RAL or BS colours |
Features and Options
- Client specified transformer type
- Air-cooled or force ventilated to increase output by up to 40%
- Reduced footprint design where necessary
- All forms of separation available
- LOVAG/ASTA certified busbar systems up to 6300A in fully type-tested arrangements
- Front & rear access designs suitable for top & bottom entry cables
- Standard paint finish RAL 7035 with all other RAL & BS colours available on request
- Ingress protection of IP31 as standard with ratings available up to IP54
- All types of functional units including ACB’s, MCCB’s, fuse switches in fixed, withdrawable and plug-in formats
- Components from all leading manufacturers within standard arrangements including ABB, Schneider & Siemens
- Comprehensive range of metering options
- Incorporating intelligent system controls & automation with conventional relay logic control or PLC systems
- Provisions for thermographic surveys including steel clad busbar chambers profiled with thermal imaging grids
- Thermal monitoring options available
- 3D modelling available on all projects
- Non-contact continuous infrared thermal monitoring available