PHOTOMETRIC DATA
Is a generic term for light output and distribution data for a lamp or luminaire and can be shown in many formats. Generally data is produced following the IES or ELUMDAT method to provide a .ies or .ldt computer file for use in a lighting design program such as Relux or Dialux. Photometric data is available for a wide selection of Luceco luminaires from our website.
POWER FACTOR
The active power divided by the apparent power (i.e., product of the rms input voltage and rms input current of a driver).
POWER FACTOR CORRECTION In an electronic device, such as an LED lighting fixture, a system of inductors, capacitors, or voltage converters to adjust the power factor of electronic devices toward the ideal power factor of 1.0.
REACH
Registration, Evaluation, Authorisation & restriction of Chemicals. The EU Directive covering the use of hazardous chemicals used in the manufacturing process and supply of products.
REMOTE LED DRIVER
Some LED lights in our range use a remote plug and play LED Driver, that offers flexibility to select either a fixed output, dimmable driver or emergency versions, with all being interchangeable.
REMOTE PHOSPHOR
A phosphor conversion technique in which photons from a royal blue LED passes through a phosphor material that is not attached to the LED chip.
ROHS
Restriction of Hazardous Substances (2002/95/EC) is an article 95 directive, meaning it is across all European Union member states. Since July 1st 2006 the
use of hazardous substances is restricted in products, to prevent environmental harm. The prohibited substances are Lead, Mercury, Cadmium, Hexavalent Chromium, Polybrominated Biphenyls and Polybrominated Diphenyl Ethers. All relevant Luceco products comply.
SELF-CONTAINED
The most common type of Emergency lighting luminaire, where all of the components are within one Emergency luminaire. This can include gearboxes connected directly to individual luminaires but outside the main luminaire housing. If within 1m, it is classed as selfcontained.
SMDS Surface-mount LEDs.
SOURCE LUMENS (LM)
Source or Chip lumens is the output of the LED array and does not allow for any reduction or increase from the luminaire.
SOURCE WATTAGE Also could be referred to as chip wattage is for the LED only and does not include any control gear.
TASK LIGHTING Localised lighting intended for a specific task.
THERMAL MANAGEMENT
Controlling the operating temperature of the product through design, examples include heat sinks and improved airflow.
TP(A) Diffusers used in recessed luminaires are classified in relevance to their resistance to fire and spread of flame. TP(a) is the highest classification but has lower efficacy due to the compromise in light transmittance.
TP(B)
Diffusers are acceptable for the majority of applications, following the 2013 revision of the building regulations. Approved Document B – Fire Safety: Volume: Building other than dwelling houses, includes further detail.
ULOR
Upward Light Output Ratio, the percentage of light emitted from a lamp or luminaire above the horizontal plane.
ULTRAVIOLET (UV) %
Electromagnetic radiation with the wavelength shorter than that of visible light. LEDs emit minimal UV and therefore do not attract insects or potentially damage sensitive materials illuminated by them.
UTILISATION FACTOR
In lighting design, the proportion of the luminous flux emitted by a light source, which reaches the working plane.
VOLTAGE The term used to describe the electrical potential difference between oppositely charged conductors.
WATTAGE The power consumed by the LED.
UV
UV 5W
LED
310
Specification Guide
GLOSSARY
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