Glossary of Terms
A/h: Amp per hour
Anti-Panic (Open) Area Lighting: The part of Emergency Escape Lighting provided to avoid panic and provide illumination allowing people to reach a place where an escape route can be identified.
Ballast: The component that controls the operation of a lamp from a specified low or high voltage AC or DC source.
Ballast Lumen Factor: The ratio of the light output of the lamp in emergency operation compared with the light output of the same lamp operated by a reference ballast at its rated voltage and frequency.
BIM: Stands for “Building Information Model”, which is a 3D Cad file model which contains a wide variety of information concerning the product, for dimensions, color, materials, light output, photo-metrics to name but a few.
CE Marked: With the CE marking on a product, the manufacturer declares that the product conforms with the essential requirements of the applicable EC directives.
Central Battery System: A system in which the batteries for a number of emergency luminaires are housed in one location. Usually for all the emergency luminaires on one lighting sub-circuit, but sometimes for all emergency luminaires in a complete building.
CREE LED: Cree is a market-leading innovator of lighting-class LEDs, LED lighting, and semiconductor solutions for wireless and power applications.
DALI: Digital Addressable Lighting Interface
Duration: The period of time, in hours, that the luminaire can maintain continuously the minium level of illuminance required.
EMC compliant: Electric Magnetic Compatibility
Emergency Exit: The way out of a building, which is intended to be used at any time whilst the premises is occupied.
Escape Route Lighting: Lighting provided to ensure that the means of escape to the final EXIT point can be effectively identified and safely used.
Emergency Lighting: The lighting provided for use when the supply to the normal mains lighting installation fails.
Exit Luminaire: An emergency luminaire designed to serve as an Exit sign.
‘F’ Mark: Mark indicating that a luminaire is suitable for mounting onto normally combustible surfaces.
Glow Wire Test: The glow-wire test (850°c) is one of the most important fire-related tests for plastics used in the electrical industry and simulates overheating of wires or components such as resistors or capacitors.
ICEL: Industry Committee Emergency Lighting
Ingress Protection (IP) Number: Classification of the degree of protection a luminaire provides against the entry of solid foreign bodies and moisture
ISO:9001:2008: The ISO 9000 family of standards is related to quality management systems and designed to help organisations ensure that they meet the needs of customers and other stakeholders while meeting statutory and regulatory requirements related
to the product.
LED: Light Emitting Diode
LIF: Lighting Industry Foundation
Lumens: The lumen is the unit of luminous flux, a measure of the total “amount” of visible light emitted by a source.
Luminaire: Apparatus which distribute the light given by a lamp or lamps, including all of the items necessary for fixing and protecting the lamps and for connecting them to the electrical supply.
Ni-Cd: Nickel Cadmium Battery
Ni-Mh: Nickel Metal Hydride
Non-Maintained Emergency Luminaire: A luminaire containing one or more lamps, which operate from the emergency supply only upon failure of the normal mains supply.
Maintained Emergency Luminaire: A luminaire containing one or more lamps, all of which operate from the normal supply or from the emergency supply at all material times.
Mounting Height: The vertical distance between the underside of the luminaire or base of a sign and the working plane. Note: For emergency lighting the floor is always taken to be the working plane.
NSAI: National Standard Authority of Ireland
Photometric Data: Photometric Data is often used to simulate lighting designs for projects before they are built or renovated. This enables architects, lighting designers, and engineers to determine whether a proposed lighting setup will deliver the amount of
light intended. They will also be able to determine the contrast ratio between light and dark areas.
Self Contained Emergency Luminaire: A luminaire or sign providing Maintained or Non-Maintained emergency lighting, in which all the elements such as battery, the lamp and the control unit are contained within the housing or within 1 metre of the housing.
Slave Luminaire: An emergency luminaire without its own batteries, which is designed to work in conjunction with a central battery system.
Combined/Sustained Emergency Luminaire: A luminaire containing two or more lamps, at least one of which is energised from the emergency supply and the remainder from the normal supply
VA: Volt-ampere (VA) is a measurement of power in a direct current ( DC ) electrical circuit.