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Electricity
A database referring to the existence of a flow of electric charge.
Industry: Utilities
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Electricity
Ratio correction
Electrical equipment; Electricity
A feature of digital relays that enables compensation to be carried out for a CT or VT ratio that is not ideal.
Residual current device (RCD)
Electrical equipment; Electricity
A protection device which is actuated by the residual current.
Reactance
Electrical equipment; Electricity
The opposition of inductance and capacitance to alternating current equal to the product of the sine of the angular phase difference between the current and voltage.
Reactive power
Electrical equipment; Electricity
A component of apparent power (volt-amps) which does not produce any real power (watts) transfer (the sine of the phase angle between the current and the voltage). It is measured in VARs volt-amps ...
Real power
Electrical equipment; Electricity
The average value of the instantaneous product of volts and amps over a fixed period of time in an AC circuit.
Recloser
Electrical equipment; Electricity
A switching device that rapidly recloses a power switch after it has been opened by an overload. In reclosing the power feed to the line, the device tests the circuit to determine if the problem is ...
Recombination (battery)
Electrical equipment; Electricity
State in which the hydrogen and oxygen gases normally formed within the battery cell during charging are recombined to form water.
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