Personal tools

Glossary

From Ukastle Reference Section

Jump to: navigation, search

Arc Deflector: Allows MA lamps to be operated horizontally


Ballast: Reduces mains voltage to match lamp operating voltage and assists in providing striking voltage to start lamp. Traditionally of magnetic type


BC: Bayonet cap


Bracket: The top of the column, often at right angles to the main tube and of smaller diameter to which a streetlight is attached


CDO-TT: Ceramic Metal Halide lamp in a tubular envelope and Edison Screw cap


CDM: Ceramic Metal Halide lamp in a capsule type envelope with bi-pin connections


Ceramic Metal Halide: Metal Halide lamp with arc tube made of ceramic material


CFL: Compact Fluorescent Lamp


Column: The pole used to mount a streetlight


CosmoPolis: A type of Metal Halide lamp produced by Philips. Requires an electronic ballast


Capacitor: Stores electrical charge, used with a magnetic ballast


Choke: Another word for magnetic ballast


Condensor: Another word for capacitor


CU/Concrete Utilities: Known now as CU Phosco. Used to make concrete columns (no longer made) although they still produce steel columns


Electronic ballast: Uses electronic components to provide the same functions as a traditional ballast


ES: Edison Screw


ESLA: A type of vintage and obsolete lantern that used incandescent lamps and mirrors


Fluorescent: Light source produced by an electric arc exciting a phosphor material on the inside of a tube or bowl. The excited phosphor emits visible “white” light


Gear: Ballast, PFC and ignitor


GES: Giant Edison Screw


GLS: General Lighting service. A type of incandescent bulb


HF: High Frequency


Hockey Stick: A style of column (and bracket) with a right angle at the top which looks similar to a hockey stick


Ignitor: A component that produces the high voltage to strike a SON or SOX lamp


Incandescent: Light produced by a glowing filament


Leak gear: Type of magnetic ballast for SOX lamps that requires no ignitor. Still used but now obsolete


LED: Light Emitting Diode. A semiconductor device that emits light


Luminaire: Another word for streetlight


MA: Low pressure mercury discharge lamp. Normally operated vertically. See also arc deflector. Lamp type obsolete


MBF: High pressure mercury discharge lamp. F donates “fluorescent”. Lamp is in glass envelope with a fluorescent coating on the inside. Light is a warmer white than MBU or MA


MBU: High pressure mercury discharge lamp. U donates “universal” operating position. Lamp is in clear glass envelope. Lamp type obsolete


Mercury: Type of discharge lamp using mercury


Metal Halide: Type of discharge lamp that produces a white light


Minicell: A device used to automatically turn on a streetlight at dusk and off at dawn, a smaller version of the photocell


MH: Metal Halide


NEMA: National Electrical Manufacturers Association. A standard socket often fitted to the top of lanterns to connect a photocell


Petit Jean: A French column manufacturer that produced an octagonal section steel column


PFC: Power Factor Correction capacitor, compensates for reactive load of magnetic ballasts


Photocell: A device used to automatically turn on a streetlight at dusk and off at dawn which plugs into the NEMA socket on a lantern


PL-L: Type of linear compact fluorescent tube


Post Top: Method of mounting a streetlight so that the lantern is mounted directly to the column with no bracket, with the column tube entering the bottom of the lantern


Quartz Metal Halide: Metal Halide lamp with arc tube made of quartz material


Refractor ring: Often made of glass with facets and prisms and used to intensify the light within a lantern


Side entry: Method of mounting a streetlight where the bracket enters from the side of the lantern


SLI: Linear sodium lamp, type of low pressure sodium lamp with bi-pin connections at either end. Produces monochromatic yellow light. Lamp type obsolete


SolarColour: GEC Osram trade name for SON


Solar Dial: A type of timeswitch that automatically compensates for the different times of sunset and sunrise through the year


SO/SOH: Obsolete type of low pressure sodium lamp with removable arc tube in an outer double walled vacuum tube


SOI: Development of SOH lamp with arc tube fitted inside a sealed outer envelope. Lamp type obsolete


SON: High pressure sodium vapour lamp, straight arc tube in a tubular or bulbous outer envelope fitted with an ES or GES cap at one end. Produces a peach to orange colour light


SON-E: SON lamp with elliptical outer bulb with an internal fluorescent coating


SON-I: SON lamp with an internal ignitor


SON-T: SON lamp with clear tubular outer envelope, usually referred to as just SON


SOX: Low pressure sodium vapour lamp with U shaped arc tube within an outer clear tube fitted with a bayonet cap at one end. Produces monochromatic yellow light


SOX-E: Type of SOX lamp which operates at lower currents to reduce power consumption


SOX+/Plus: Type of SOX lamp with longer life than standard SOX


Stanton: A manufacturer of columns often in concrete. Later know as Stanton and Staveley. No longer exists


Stainton: A manufacturer of steel columns. Still exists


Stewarts & Lloyd: A manufacturer of steel columns. No longer exists


Swan neck: A type of bracket which is curved like the neck of a swan


T5: A type of fluorescent tube 16mm in diameter


T8: A type of fluorescent tube 25mm in diameter


T12: A type of fluorescent tube 38mm in diameter


Timeswitch: A mechanical or electronic clock used to turn on and off streetlights


Top Entry: Method of mounting a streetlight where the bracket enters from the top of the lantern


Turtle: A “nickname” applied to the Thorn Alpha 3 and a GEC range of lanterns