Maintenance Factor For Outdoor Lighting

In addition a luminaire maintenance factor due to soiling is to be considered.

Maintenance factor for outdoor lighting.

Lighting maintenance factor is a number that describes the reduction of lumens or light levels over time. The society of light lighting s code for lighting states that. With this you can determine how well lit an area will be over time. Lamp lumen maintenance factor llmf describes the decrease in lamp luminous flux of the light sources over the duration of use.

The lighting scheme should be designed with an overall maintenance factor calculated for the selected lighting equipment environment and specified maintenance schedule 2. Selection of the maintenance method of a simplified or detailed maintenance factor in accordance with cie 97 2005 for indoor or outdoor areas embedded areas and open terrain. To set the maintenance method and maintenance factors for the lighting installation four steps are necessary. With the advent of led lighting maintenance factors have increased significantly over fluorescent and hid counterparts they were designed to replace.

It is the multiplier that expresses the decrease in light output. Llmf lamp lumen maintenance factor based on manufacturer s chip lm80 data and tm21 calculator for operation in a 25 c ambient temperature for the nominated application service life. The society of light lighting s code for lighting states that. Theoretically the mf is composed of.

Maintenance factors are an important consideration in the planning of lighting installations. It is relevant to ensure this prescribed value until the end of the system life. Maintenance factor refers to the loss of light that occurs over time and is also known as loss factor. The reduction in luminous flux llmf and total failure lsf of led luminaires are shown.

Maintenance factors are an important consideration in the planning of lighting installations. The lighting scheme should be designed with an overall maintenance factor calculated for the selected lighting equipment environment and specified maintenance schedule 2. Maintenance factor occurred by the aging or pollution of the lamp. The maintenance factor according to önorm en 12464 1 indicates how quickly the light intensity in a system decreases.

For indoor lighting a room maintenance factor and for outdoor lighting a surface maintenance factor if necessary must also be considered. Positioning of the lighting in the selected area 3. The maintenance factor mf depends on the type of light source and luminaire the dust and soiling of the room as well as the maintenance method and the maintenance interval.