Ignitor: a component which produces electrical impulses to start the discharge lamps.
Ballast: a device fitted between the power supply and the discharge lamps that limits the current to the value required. There are 2 "families" of ballast: highly efficient electronic ballasts, and ferromagnetic ballasts.
Class I: designates equipment with main insulation whose accessible metallic parts are interconnected and linked to an earth terminal.
Classe II: designates equipment where any fault between the electrified parts and the accessible parts is unlikely to occur.
Live conductor: any conductor (including neutral) involved in the transmission of electrical energy.
Equipotential conductor: a protective conductor that puts exposed conductive parts at the same (or a similar) potential as the extraneous conductive parts.
Neutral conductor (N): a conductor connected to the neutral point of a system and which can be used for electrical distribution.
Protective conductor (PE): a conductor which, in certain circuits, connects the exposed conductive parts, the extraneous conductive parts, the main earthing terminal, the earth electrode and the earthed point of the source or artificial neutral.
PEN Conductor: a single conductor combining the functions of both protective conductor and neutral conductor.
Console: a luminaire support fixed to a vertical wall.
Direct contact: electrical contact with live parts.
Indirect contact: electrical contact with exposed conductive parts which have become live as a result of an insulation fault.
Fault current: a current flowing at a given point as a result of an insulation fault.
Ground fault current: a fault current that flows to earth.
Leakage current: a current which, in the absence of a fault, flows to earth or to extraneous conductive parts in a circuit. | | Residual current: the algebraic sum of the instantaneous values of current flowing through all live conductors of a circuit at a point of the electrical installation.
Casing: the box which protects equipment against external influences and provides protection from all sides against direct contact.
Stem: the main part of the lamppost able to support an arm, post extension or luminaire.
Luminaire: the optical, mechanical and electrical assembly that is equipped to receive one or more lamps. Sometimes also called the lantern.
Exposed conductive part: a conductive part of an item of equipment that can be touched and which normally is not electrified, but which could become electrified in the event of the main insulation failing.
Control gear unit: a rigid box or element upon which are fixed the various power-supply components necessary for the discharge lamps to function correctly.
Earth electrode: a conductive part inserted into the earth or incorporated into a specific conductive medium that is in contact with the earth .
Projector: an intensifying luminaire in which light is concentrated using an optical system.
Fault voltage: potential difference between a given fault point and the reference earth, as a result of an insulation fault.
Intelligent Lighting Management System: a duplex transmission system that remotely ensures network monitoring and the issuing of specific commands, on both a network-wide and a local level.
Anchor rods: metal rods embedded in the foundations that allow the base plate to be fixed into the foundations.
Access hatch: the door covering the opening in the lamppost that allows access to the electrical components.
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