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One supply phase (phase-to-neutral) from the utility is converted to split-phase for the customers. In electrical engineering, single-phase electric power (abbreviated 1φ) is the distribution of alternating current electric power using a system in which all the voltages of the supply vary in unison. Single-phase distribution is used when loads ...
single-phase electric power An alternating current power system using only two wires, where peak voltages in each wire occur at the same time. single-sideband modulation A radio carrier modulation system where redundant frequencies of one duplicate side band are filtered out along with the carrier, to save transmitter power. skin effect
This gives a phase-to-phase voltage of 400 volts wye service and a single-phase voltage of 230 volts between any one phase and neutral. In the UK a typical urban or suburban low-voltage substation would normally be rated between 150 kVA and 1 MVA and supply a whole neighbourhood of a few hundred houses.
Phase space formulation, a formulation of quantum mechanics in phase space; Phase (waves), the position of a point in time (an instant) on a waveform cycle Instantaneous phase, generalization for both cyclic and non-cyclic phenomena; AC phase, the phase offset between alternating current electric power in multiple conducting wires
In northern and central Europe, residential electrical supply is commonly 400 V three-phase electric power, which gives 230 V between any single phase and neutral; house wiring may be a mix of three-phase and single-phase circuits, but three-phase residential use is rare in the UK.
(1) Nominal grid voltage according to regulation is 230/400 V, [45] but in practice, equipment with 220/380 V is more commonly used. (2) Types C and F plugs are officially recognized by SNI 04-3892.1.1-2003. (3) British type G sockets are common in Riau Islands due to their close proximity to Singapore. [46] Iran: C, F 220 V 400 V 50 Hz Iraq
Three-phase transformers and their associated neutrals are usually found in industrial distribution environments. A system could be made entirely ungrounded. In this case a fault between one phase and ground would not cause any significant current. Commonly the neutral is grounded (earthed) through a bond between the neutral bar and the earth bar.
A typical one-line diagram with annotated power flows. Red boxes represent circuit breakers, grey lines represent three-phase bus and interconnecting conductors, the orange circle represents an electric generator, the green spiral is an inductor, and the three overlapping blue circles represent a double-wound transformer with a tertiary winding.