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Utilities
Of or related to any publicy utility institution mandated with maintaining the infrastructure for a particular public service; such as the provision of water, gas and electricity.
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Utilities > Electricity 
lighting maintenance factor (MF)
Electrical equipment; Electricity
The result of time-dependent depreciation effects must be considered in the initial design. Regular maintenance is particularly important with regard to energy conservation and ...
lightning
Electrical equipment; Electricity
Lightning is a powerful natural electrostatic discharge produced during a thunderstorm. Lightning's abrupt electric discharge is accompanied by the emission of light.
lightning & switching impulses
Electrical equipment; Electricity
A distinction is made between Lightning and Switching impulses on the basis of duration of the wave front. Impulses with wave-front durations of up to a few tens of microseconds ...
limit switch
Electrical equipment; Electricity
A protective device used to open or close electrical circuits when certain limits, such as temperature or pressure, are reached.
limited approach boundary
Electrical equipment; Electricity
An approach limit at a distance from an exposed live part within which a shock hazard exists.
limiting value of the output current
Electrical equipment; Electricity
The upper limit of the output current which cannot, by design be exceeded under any conditions.
line
Electrical equipment; Electricity
Refers to the conductor in an overhead or underground distribution or transmission line.
Sub-categories
- Electricity (7954)
- Emergency systems (0)
- Gas (1175)
- Sewage (66)