Ordlista over termer

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• A
• B
• C
• D
• F
• G
• H
• I
• L
• M
• O
• P
• T
• U
• V
• W

A

Växelström (AC)

Växelström som kontinuerligt ändrar riktning. Frekvensen mäts i cykler per sekund, så kallat hertz. Växelström är den huvudsakliga strömkällan i bostäder och kommersiella fastigheter. Det finns två växelströmsfrekvenser: 60 hertz i USA (och länder som följer amerikansk standard) samt 50 hertz i Europa och länder som följer europeisk standard.

Allmänbelysning

Mängden ljus inom ett givet område. Ljussensorer fungerar genom att känna av det omgivande ljuset för att automatiskt tända eller släcka belysningen. Som standard brukar värdet för omgivande ljus ställas in på 15 lux, 25 lux eller 35 lux.

Ampere / AMP

Enheten för elektrisk ström. En ampere är den ström som flödar genom ett motstånd på en ohm vid en spänning på en volt.

B

Drossel / Reaktor

En drossel (eller reaktor) är en elektrisk enhet som används i lysrörssystem för att reglera och tillhandahålla tillräcklig ström och spänning till lampor och armaturer. 

Glödlampa / Ljuskälla

A Glödlampa En fristående ljuskälla som skruvas fast i en lampsockel i en armatur. Vanligtvis täcks själva ljuskällan (glödtråd eller lysdioder) av en kupa i glas eller plast. Detta skiljer sig från en armatur, eftersom lampan skruvas i armaturen.

C

Lågenergilampa (CFL)

En lågenergilampa (CFL), även kallad kompaktlysrör, är ett högeffektivt lysrör utformat för att ersätta en traditonell glödlampa. Lamporna använder ett rör som är böjt eller vikts för att passa i utrymmet för en glödlampa, samt ett kompakt elektroniskt drivdon i lampans sockel.

Ström

Flödeshastigheten för elektricitet i en krets, mätt i ampere.

D

Dagsljusstyrning

Belysningen dimras upp eller ned beroende på nivån av omgivande dagsljus för att bibehålla en fastställd ljusnivå enligt konstruktörens specifikationer och relevanta standarder. Dagsljusstyrning kallas även för konstantlysreglering eller dagsljusövervakning.

Likström (DC)

En elektrisk ström som endast flödar i en riktning.

Dimmer

An electronic device or system connected to a light fixture to adjust the intensity of light output. Dimmers can lower the brightness of light to save energy and provides longer lamp life for incandescent, halogen, or low voltage sources.

Dual-technology Motion Sensor

Dual-technology motion sensors use two methods to detect motions. In most cases, they use a combination of PIR and ultrasonic technology to provide better motion detection performances. 

F

Fluorescent Lamp

A fluorescent lamp, or fluorescent tube, is a low-pressure mercury-vapor gas-discharge lamp that uses fluorescence to produce visible light. 

G

Ground

A conducting connection between an electrical circuit and the earth or other large conductions body to serve as an earth thus makes a complete electrical circuit.

Ground Wire

A ground wire is an electrical wire that extends into the ground to give excess electrical charges a safe place to go for higher security purposes.

H

Halogen Lamp

A type of incandescent lamp with a small amount of a halogen added to the tungsten filament. The combination of the halogen gas and the tungsten filament redeposits evaporated tungsten on the filament, increasing its life and maintaining the clarity of the envelope.

HVAC

Heating, Ventilation & Air Conditioning.

I

IEC

International Electrotechnical Commission, is an international standards organization that publishes international standards for all electrical, electronic and related technologies.

Illuminance

The “lighting level” measured in foot-candles, which indicates the density of light on a surface per unit area, i.e. how much light is falling on a given area (ft-C = lm/ft2 or lux = lm/m2).

Incandescent Lamp

An electric light with a wire filament that glows and gives off light when heated by an electric current. They are low costs and work equally well on either AC and DC.

IR (infrared)

Electromagnetic waves in the frequency range just below visible light corresponding to radiated heat. IR waves are often used for detecting motions in motion sensors. 

L

Lamp life

Average time of the lamp that is capable of producing light before it fails. Usually, it’s defined as the point in time when 50% of the lamps have burned out.

LED (Light-Emitting Diode)

A semiconductor light source that emits light when current flows through it.  They are 90% more efficient than incandescent light bulbs, extremely long life and produce little heat on object being illuminated.

Line Voltage

The standard 120 V power provided by receptacles and for lighting fixtures in commercial spaces in the United States and Canada.

Luminaire

A luminaire or light fixture is an electrical device containing an electric lamp that provides illumination. All light fixtures have a fixture body and one or more lamps. The lamps may be in sockets for easy replacement—or, in the case of some LED fixtures, hard-wired in place.

M

Motion Detector / Motion Sensor

A motion detector or motion sensor is an electrical device that utilizes a sensor to detect nearby motion, particularly people. Typically, in the lighting control sector, there is PIR technology motion sensor, ultrasonic technology motion sensor and dual technology motion sensor that use a combination technology of both. Motion detectors are also known as ‘presence detectors’.

O

Närvarosensor

An occupancy sensor is an indoor motion sensor used to detect the presence of a person to automatically control lights or temperature or ventilation systems. The purpose of using occupancy sensor is to save energy and increase convenience by automatically turning lights on when space is occupied and off when space is vacant.

P

Passive Infrared Sensor / PIR Sensor

A passive infrared sensor (PIR sensor) is an electronic sensor that measures infrared (IR) light radiating from objects in its field of view. They are most often used in PIR-based motion detectors.

Photocell

A control agent for fixtures that can automate light levels. Some photocells qualify controls for certain rebates and incentives.

T

Time-delay

If a switch is activated and no movement is detected the lights will switch off after a pre-set time.

U

UL Listed

A product that has been tested and listed by UL.

V

Vacancy Sensor

A device that detects the absence of people in a space and provides automatic switching or dimming of lighting.  The primary purpose is to automatically turn lighting Off when an area is not occupied to ensure energy savings. A vacancy sensor relies on a person operating a manual switch to turn lighting On (Manual On/Auto Off).

Spänning

The electrical power, in volts, of force/pressure supplied by an electrical circuit to a lighting source. Standard US power supply is 120 V 60 cycle (277 V 60 cycles in commercial spaces). Standard power internationally is 220/240 V 50 cycles. It is conceptually the “pressure” of the power supply similar to the psi pressure in a pipe.

W

Wall Box

A metal or plastic enclosure housing one or more electrical devices.  USA standard 1 gang size is 2” wide x 3.0” high.  The UK standard 1 gang wall box size is 86mm (W) x 86mm (H) (3.425” x 3.425”).  Also known as switch box or back box.