# single-phase circuit

## single-phase circuit

[′siŋ·gəl ¦fāz ′sər·kət]
(electricity)
Either an alternating-current circuit which has only two points of entry, or one which, having more than two points of entry, is intended to be so energized that the potential differences between all pairs of points of entry are either in phase or differ in phase by 180°.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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Because a three-phase APF system is symmetrical, the system is analyzed with its single-phase circuit .
Caption: Figure 2: Single-phase circuit diagram of LC APF with grid impedance.
Figure 2a shows the equivalent single-phase circuit for the compensated system.
This single-phase circuit is able to correct power factor in alternating current power network.
In Brazil, for example, there is a common sense so far that single-phase circuits for rural grids have been adequate to supply the existing loads in rural areas .
In addition, the device can accommodate 36 single-phase circuits, 12 three-phase circuits, or any combination in between.
The same technical conditions for a single-phase converter are applied and the calculation of inductances for an n-phase design can be accomplished in the same way as for single-phase circuits. Taking into account the input current which is subdivided into the different phases, the maximum current variation in the inductances must be based on the maximum DC-current at rated power in the individual phases.
The circuits analysed are single-phase circuits, but a three-phase converter can be easily obtained by joining three single-phase converters.
The goal was to evaluate meters that cost less than \$1,000 for a three-phase circuit or three single-phase circuits. For this study, three phase meters with data logging capability that cost less than \$500 are characterized as "low cost." Units that cost between \$500 to \$750 are characterized as "medium cost" and units that exceed \$750 are characterized as "high cost."

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