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Lighting controls

1.1    Scope

Lighting controls manage electric lighting levels within specific areas, as and when required to match changes in daylight or occupancy, or individual activities.

A wide variety of lighting control products are available, and these range from simple manual switches to fully automatic control systems that adjust electric lighting levels to reflect planned operating hours, activities, occupation levels and the availability of daylight in specific areas.

The Energy Technology List (ETL) scheme aims to encourage the purchase of lighting controls that realise energy savings by automatically switching or dimming lighting in these ways.

Five different categories of lighting controls are covered by the ETL scheme:

  1. Time controllers that automatically switch off lighting, or dim it down, at predetermined times.
  2. Presence detectors with associated controllers that monitor occupancy or movement of personnel, and automatically switch off lighting, or dim it down, when the area is unoccupied.
  3. Daylight detectors with associated switching controllers that monitor daylight availability, and automatically switch off lighting when daylight is sufficient to illuminate the area.
  4. Daylight detectors with associated dimming controllers that monitor daylight availability, and automatically dim lighting, by reducing its power consumption, to the level needed to sufficiently illuminate the area.
  5. Central area and network control units that provide the facility to manage the overall operation of electric lighting installations that include some or all of the categories of lighting controls above.

The above categories of controls may be installed either individually, or in combination.

Eligible lighting controls shall comply with the requirements as set out below. The individual products do not need to be named on the ETL.

1.2    Definitions

Lighting controls are products that are specifically designed to switch electric lighting on or off, and/or to dim its output.

1.3    Requirements

1.3.1    Eligibility requirements 

To be eligible, products must:

  • Incorporate one or more of the categories of lighting controls set out in Table 1.1, Table 1.2, Table 1.3, Table 1.4 and Table 1.5 below, and comply with the specific eligibility criteria in the relevant table(s).
  • Be CE marked.

Products may also incorporate the facility that permits the automatic switching of lights to be temporarily overridden on a central basis for maintenance or security purposes, or to ensure the safety of occupants during particular events or activities.

Table 1.1  Time Controllers

SECTION 1A – ELIGIBILITY CRITERIA

To be eligible under this category of Lighting Controls:

  • The product must automatically switch the lighting off, or dim it down, at predetermined times of the day or week, or after a predefined interval.

Where automatic dimming controls are used, they must be capable of reducing the power consumption of the controlled lamps by at least 75%.

Where fluorescent lighting is being dimmed, it must incorporate high frequency dimmable ballast and electronic control gear. Other forms of lighting may incorporate either mains frequency or high frequency dimmable ballasts and associated controls.

SECTION 1B – Notes    
  1. The product may also be set to automatically switch on the lighting at predetermined times.
  2. Products may incorporate the facility for local users to manually switch on and off lighting in a local area and thus to override the predetermined lighting levels at that particular time. However products that allow local users to locally override subsequent predetermined times for the lighting to be automatically switched off, or dimmed down, are not eligible.
  3. If the product used is designed to control any form of heating, ventilation or air conditioning (HVAC) equipment, then it must be listed under the HVAC Zone Controls part of the ETL.

Table 1.2    Presence detectors with associated controllers

SECTION 2A – ELIGIBILITY CRITERIA   

To be eligible under this category of Lighting Controls:

  • The product must automatically switch off the lighting, or dim it down, after the area has become unoccupied.

Where automatic dimming controls are used, they must be capable of reducing the power consumption of the controlled lamps by at least 75%.

Where fluorescent lighting is being dimmed, it must incorporate high frequency dimmable ballast and electronic control gear. Other forms of lighting may incorporate either mains frequency or high frequency dimmable ballasts and associated controls.

SECTION 2B – Notes

  1. The product may also automatically switch on the lighting when the space becomes occupied. Alternatively local users may manually switch on the lighting at the start of occupancy.
  2. Products may incorporate the facility for local users to manually override the presence detector/controller and to switch the lighting off at any particular instance. However products that allow local users to override the ability of the presence detector/controller to automatically switch off, or dim the lighting, are not eligible.
  3. Products must not consume more than 0.5 Watts in parasitic power, when the associated lights are turned off.

Table 1.3  Daylight detectors with associated switching controllers

SECTION 3A – ELIGIBILITY CRITERIA

To be eligible under this category of Lighting Controls:

  • The product must monitor the availability of daylight and automatically switch the lighting off when sufficient daylight is available to illuminate the area.

SECTION 3B – Notes

  1. The product may also automatically switch on the lighting when daylight has fallen below the required level. Alternatively local users could be allowed to switch on the lighting manually, when daylight has fallen below the required level.
  2. Products may incorporate the facility for local users to manually override daylight detector/controller and switch the lights off at any particular instance. However products that allow local users to override the ability of the daylight detector/controller to automatically switch off the lighting are not eligible.
  3. Products must not consume more than 0.5 Watts in parasitic power, when the associated lights are turned off.

Table 1.4  Daylight detectors with associated dimming controllers

SECTION 4A – ELIGIBILITY CRITERIA

To be eligible under this category of Lighting Controls:

  • The product must monitor the availability of daylight and automatically dim the electric lighting to the level just needed to sufficiently illuminate the area, and switch it off when there is enough daylight.
  • The product must be able to reduce the power consumption of the lamps being controlled by at least 75% through dimming.

Where fluorescent lighting is being dimmed, it must incorporate high frequency dimmable ballasts and electronic control gear. Other forms of lighting may incorporate either mains frequency or high frequency dimmable ballasts and associated controls.

SECTION 4B – Notes

  1. The product may also automatically switch on the lighting when daylight has fallen below the required level. Alternatively local users could be required to switch on the lighting manually, as and when needed.
  2. Products may incorporate the facility for local users to manually override the dimming controller at any particular instance and to set the lighting to a lower level than it would be under automatic control, or switch it off. However products that allow local users to override the ability of the daylight detector/controller to automatically dim the lighting are not eligible.
  3. Products must not consume more than 0.5 Watts in parasitic power, when the associated lights are turned off.

Table 1.5  Central area and network control units (lighting control systems)

SECTION 5A – ELIGIBILITY CRITERIA

To be eligible under this category of Lighting Controls:

  • The product must be able to manage the overall operation of the electric lighting installation that includes some or all of the categories of lighting controls set out in Table 1.1 to Table 1.4 above.

SECTION 5B – Notes

  1. The product may make use of pre-programmed “scenes” that configure the lighting levels in different areas for a particular activity or daylight level or occupancy status in the most energy efficient manner. However products that are only capable of manual scene setting are not eligible.
  2. Products may also incorporate the facility to monitor lighting energy consumption.
  3. If the product is designed to control any form of heating, ventilation or air conditioning (HVAC) equipment then, it must be listed under the HVAC Zone Controls part of the ETL.

1.4    Verification for ETL Listing 

This sub-technology is “unlisted” therefore individual products do not need to be listed on the Energy Technology Product List. 

1.5    Conformity testing

Products listed on the ETL may be subject to the scheme’s conformity testing programme in order to ensure listed models continue to meet the ETL requirements.​​​