Urbis Product Catalogue
High Mast Lighting
High levels of illumination, easy maintenance and minimum ground level obstruction are just some of the benefits high mast lighting has to offer.
First developed to light multi level road intersections in the mid 60's, high mast lighting has become a popular and efficient way of lighting large-scale areas such as airports, dockyards, large industrial areas, sports areas, shopping centres and car parks. There is a huge range of applications that can utilise the benefits of a high mast system.
Urbis Lighting offers a complete range of high mast equipment, and can put together specific combinations of masts and lanterns to meet any lighting requirements.
Fabricated from sheet steel, the masts have a polygonal cross section, which taper towards the top. Finished through a hot-dip galvanising process, the masts are able to stand up to even the most extreme weather conditions and they do not require painting. If for aesthetic reasons a coloured finish is required, the masts are available in the full range of RAL colours.
Masts are delivered in sections, for ease of transport, and are easily assembled on site where they are bolted to a prepared concrete foundation.
Safety and reliability were the key factors considered in the design of the raising and lowering system of the mast. Once the mast is installed, the raising and lowering mechanism may only be used once or twice a year for routine cleaning and maintenance; so it is crucial that all parts of the system are long lasting and reliable. With this in mind, all Urbis components are engineered to very high safety factors. The mast lighting systems are designed to require little or no maintenance throughout their life.
An 'in tension' hoisting system carries the weight of the luminaire carriage at all times, which eliminates the risk of the carriage getting locked at the top of the mast, which can happen with latching systems.
No maintenance is required for the aluminium pulley system, which contains the two stainless steel hoisting ropes and the main electrical supply cable. The pulleys run on stainless steel shafts and pulley guards are fitted to ensure ropes cannot come off.
Single or double drum winch systems are available. The single drum winch has a safe working load of 350kg. It operates with a single hoisting rope that is attached to twin ropes that run up the length of the mast. For specifications that call for two independent hoisting ropes, the double drum winch is available, the safe working load of which is 700kg. The ropes are driven simultaneously, but can be driven independently, if any adjustment is required. In the light duty system, single drum winches of 150kg safe working load are supplied. A portable power tool is provided to drive the winch, as well as handles for manual operation if power is unavailable.
| Height | 20m Light Duty | 20m Standard Duty | 25m Standard Duty | 30m Standard Duty |
|---|---|---|---|---|
| Our standard design detail is shown above | ||||
| Top diameter | 111mm | 150mm | 150mm | 150mm |
| Base diameter A/F | 385mm | 440mm | 455mm | 550mm |
| Flange Plate | 570mm | 610mm | 630mm | 690mm |
| No of bolts | 6 | 8 | 12 | 16 |
| PCD | 460mm | 530mm | 560mm | 620mm |
| Weight of shaft | 521kgs | 699kgs | 907kgs | 1280kgs |
| No of sections | 2 | 2 | 3 | 3 |
| Max top loading | 1m2 | 1.56m2 | 1.56m2 | 1.56m2 |
| Max weight of headload | 203kgs | 350kgs | 350kgs | 350kgs |
All winches have factory sealed gearboxes, which are maintenance free for life. Gears are self-sustaining and the winches are fitted with a gravity lock in accordance with requirements laid down in I.L.E. Technical Report No. 7.
A flexible multicore cable supplies electricity. It is accessible through the mast base and for safety is disconnected during the lowering procedure. To enable light fittings to be tested at ground level during maintenance and installation, a test lead is provided. Because of limitations in the size of the electrical cable that can be used, control gear has to be integral or mounted next to the lantern, which has implications for the weight of the system.
In certain circumstances a high mast can be provided with a fixed headframe to carry the luminaires, which then have to be maintained by means of a hydraulic platform. In such cases it must of course be possible to access the vicinity of the mast by the appropriate maintenance vehicle.
For each individual project, groups of lanterns are arranged to meet the required distribution patterns as economically and efficiently as possible. There are two ranges of Urbis lanterns suitable for use on high mast systems. The first is a specifically designed for use on high masts. Similar in design to road lighting luminaires, the lanterns have integral control gear, full cut off distribution and an adjustable optical system to maximise efficiency. The luminaires are specially designed to reduce stray light and eliminate glare. At the same time, they are able to cope with the extreme conditions they may encounter in exposed locations. Alternatively standard floodlights can be used, but care has to be taken during design to ensure that upward light is minimised. (Please refer to separate lantern technical specifications for details.)
Urbis also offer a refurbishment service on existing installations.
