Siemens DTU3005-B Especificaciones descargar pdf (Pagina 9)

Voltage and Current Values

An accurate measurement of voltage supplied by the utility and

the current produced by the connected load is necessary in

identifying power usage and power quality problems.

DC Voltage is either direct current (DC) or alternating current (AC).

DC voltage produces current flow in one direction. DC voltage

can be obtained directly from sources such as batteries and

photocells, which produce a pure DC. DC voltage can also be

produced by applying AC voltage to a rectifier.

Measuring DC Voltage The value of DC voltage varies. Low level DC voltages, such as

5 - 30 VDC, are commonly used in electronic circuits. Higher

levels of DC voltage, such as 500 VDC, can be used in many

industrial applications to control the speed of DC motors. A

voltmeter is used to measure DC voltage.

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Siemens DTU3005-B Especificaciones Pagina 9