20 Terms
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Electricity
A database referring to the existence of a flow of electric charge.
Industry: Utilities
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Electricity
anti-pumping device
Electrical equipment; Electricity
A feature incorporated in a Circuit Breaker or re-closing scheme to prevent repeated operation where the closing impulse lasts longer than the sum of the relay and CB operating times.
apparent power (volt-amps)
Electrical equipment; Electricity
The product of the applied voltage and current in an ac circuit. Apparent power, or volt-amps, is not the true power of the circuit because the power factor is not considered in the calculation.
arc flash
Electrical equipment; Electricity
An arcing fault is the flow of current through the air between phase conductors or phase and neutral or ground. An arcing fault can release tremendous amounts of concentrated radiant energy at the ...
arc thermal performance value
Electrical equipment; Electricity
Maximum capability for arc flash protection of a particular garment or fabric measured in calories per square centimeter. Though both garments and fabrics can be used for protection a garment made ...
arcing time
Electrical equipment; Electricity
The time between instant of separation of the CB contacts and the instant of arc excitation.
armor
Electrical equipment; Electricity
An outer metal layer applied to a cable for mechanical protection. Armor is comprised of factory formed wire, designed to be applied to a range of conductor sizes. Preformed Line Products ...
