Magnitech Knowledge Base

Working definitions used across Magnitech designs and specs. These terms align with our internal handbook and are intended for quick reference.

Term	Abbr	Description
Amp hour	Ah	Amp hour is a unit of electrical charge commonly used to quantify the capacity of a battery. It represents the amount of electrical charge that a battery can deliver over a specified period.
Beam angle	—	The beam angle refers to the angular spread of light emitted from a lighting fixture. It determines the width and direction of the light distribution.
Charge Controller	—	Regulates electricity flow between PV panel and battery; prevents over-charging and improves transfer efficiency.
Colour Correlated Temperature	CCT (K)	Perceived “warmth” or “coolness” of light measured in Kelvin (K).
Colour Rendering Index	CRI	Measure of how faithfully a light source renders colours across a gamut; higher CRI = more accurate colour appearance.
Efficacy	lm/W	Light output per watt of input power; higher lm/W = more efficient.
Ex classification	—	Coding system for equipment in hazardous areas indicating protection against explosive atmospheres.
Glare	UGR	Visual discomfort from excessive brightness or contrast; managed to maintain comfort and visibility.
Horizontal illuminance	Eh	Illuminance on a horizontal plane.
IK rating	IK	Mechanical impact resistance classification for enclosures (IEC 62262).
Illuminance	lux (lm/m²)	Total luminous flux incident on a surface per unit area.
Ingress Protection rating	IP	Degree of protection against solids, dust, contact and water (IEC 60529).
Insolation	kWh/m²/day	Solar energy received per area per day; key input for sizing solar lighting systems.
LM-79	—	IES test method for performance of LED products (light output, electrical power, efficacy, etc.).
LM-80	—	IES standard for measuring lumen maintenance of LED packages/arrays/modules (component level).
Light distribution	—	Pattern/direction of emitted light; drives uniformity, intensity and application suitability.
Lumen	lm	Unit of total visible light emitted by a source (brightness).
Luminance	cd/m²	Luminous intensity per unit area in a direction; light emitted/reflected/passing through a surface.
Luminous flux	lm	Perceived power of light emitted by a source.
Luminous intensity	cd	Light emitted in a given direction; measured in candelas.
Lux	lx	Illuminance — light incident on a surface per unit area.
Maintenance factor	MF	Accounts for light loss over time (lamp/luminaire/room surface maintenance) to keep target illuminance through life.
Mounting height	—	Vertical distance from the surface to the photometric centre of the luminaire.
Ohm’s Law	—	Relationship between voltage, current and resistance in an electrical circuit.
Outreach	—	Horizontal distance from pole centreline to luminaire photometric centre.
Overhang	—	Horizontal distance from kerb edge to luminaire photometric centre.
Photometry	—	Measurement of visible light as perceived by the eye across wavelengths.
Pole setback	—	Horizontal distance from kerb (or lane edge) to pole centreline, normal to traffic direction.
Rated LED lifetime	LxBy (hours)	Estimated operating life until output declines to a specified level (e.g., L70); derived from standard tests/extrapolation.
TM-21	—	IES method for projecting long-term lumen maintenance of LED sources.
Uniformity	Uo / Ul	Evenness of illumination. Uo = min/avg; Ul = min/max along a path. Higher values = more consistent lighting.
Vertical illuminance	Ev	Illuminance on a vertical plane.