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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 
instrument transformer
Electrical equipment; Electricity
A transformer that is only designed to reduce current or voltage from a primary value that is too pass directly through a meter or instrument, to a proportional low level that can ...
insulated gate bipolar transistor
Electrical equipment; Electricity
A special design of transistor that is suitable for handling high voltages and currents. Often used in static power control equipment such as inverters, or controlled rectifiers, ...
intensity (lighting)
Electrical equipment; Electricity
The brightness of light in a given direction. Luminous intensity may be expressed in Candelas (cd) or in Lumens.
intermediate (lighting)
Electrical equipment; Electricity
Those areas of a municipality often characterized by moderately heavy nighttime pedestrian activity such as in blocks having libraries, community recreation centers, large ...
intermediate class arrester
Electrical equipment; Electricity
Surge arresters with a high energy handling capability. These are generally voltage classed at 3-120kV.
internal impedance (battery)
Electrical equipment; Electricity
The opposition to the flow of alternating current at a particular frequency in a cell or battery at a specific state-of-charge and temperature.
internal resistance (battery)
Electrical equipment; Electricity
The opposition or resistance to the flow of Direct Electric Current within a cell or battery; The sum of the ionic and electronic resistance of the cell components. Its value may ...
Sub-categories
- Electricity (7954)
- Emergency systems (0)
- Gas (1175)
- Sewage (66)