- Lamp efficacy
Ensuring the lamp efficiently converts electricity into light (lm/W).
- Ballast classification
Controlling the electricity supply to the lamp (Energy Efficiency Index).
- Luminaire distribution
Controlling light emission using optics which bend and shape the light to the correct location.
- System efficacy
Combining optical and thermal control within the luminaire (luminaire lm/W).
- Presence/absence detection
Presence: Lights automatically turn on/off with movement. Absence: Lights automatically turn off and must be manually switched on.
- Daylight detection
Artificial lighting which responds to the natural light conditions.
- Constant illuminance
A function designed to produce correct light levels for the duration of the maintenance period.
- Task-scene setting
Allowing the user to set scenes and adapt the lighting to different tasks.
- Timed off
Automatic cut-off can be installed to turn all lights off during unoccupied hours.
- Task lighting
Lighting task areas with the correct amount of light.
- Zoning of lighting
Zoning of lighting
Lighting is zoned according to area use.
- Maintenance schedule
Maintenance must be performed in response to product age, performance and environment.
- Waste light
Eliminating waste light which does not hit the intended target.
Taking advantage of light which is reflected from the surface within the space.
- Visible smart metering
Visible smart metering
Results of actions can be quickly seen as increased or decreased energy use to encourage responsible energy consumption.
Town roundabout gets a lighting face-lift
An imaginative street lighting refurbishment by the Torfaen County Borough Council is creating a safer environment at night as well as being aesthetically pleasing during the day… and will pay for itself in 3 years.
The Borough has replaced eight ageing columns and lanterns in Cumbran with Thorn's style conscious City Vision range. Keen to promote a vibrant, modern new look the Council has chosen special lighting columns with flat glass Triumph lanterns employing 250W high pressure sodium lamps.
By night the lanterns, which meet the requirements of the new European lighting code EN13201, provide excellent lighting levels with good uniformity and restriction of glare. By daytime, the distinctive column structures give strong guidance in defining the traffic route. The daytime differentiation is further helped by the bracket arms with their strong linear style and it was important to paint the whole scheme blue to match the Borough's colour scheme.
Both residents and visitors have reacted favorably to the new lighting.
Seeking to achieve a fully integrated lighting design strategy for their towns local authorities have been looking for a combination of lanterns, columns and harmonised brackets that are functional, yet aesthetically suitable and sympathetic to the environment. With the advent of the City Vision range, they now have this ability.
The scheme was designed by Torfaen C.B.C’s Street Lighting Department and was installed by SEC.