Intelligent phase voltammeter and measurement method thereof

Abstract

The invention provides an intelligent phase voltammeter and a measurement method thereof. The voltammeter comprises two clamp type current transformers and a host. The host comprises a casing and a host circuit, a wiring panel and a liquid crystal display are arranged on a panel of the casing, the wiring panel comprises input interfaces of U1, U2, I1 and I2, and the host circuit comprises a microprogrammed control unit (MCU), a three-phase electric power metering unit automated data entry (ADE), a keyboard input circuit and a power management unit, wherein the three-phase electric power metering unit ADE, the keyboard input circuit and the power management unit are connected with the MCU. The method comprises three steps: distinguishing whether sampling signals of the input interfaces are effective; automatically performing searching gear measurement; and monitoring and displaying data. The intelligent phase voltammeter and the measurement method of the intelligent phase voltammeter can automatically distinguish an input signal and select the quantity limit of measurement, and overcome the shortcomings of low measurement accuracy and proneness to damage of instruments due to manual selection of quantity limit and improper measurement functions. In addition, the method is simple and easy to implement, and the voltammeter achieves intellectualization.

Description

technical field [0001] The invention relates to an electrical measuring instrument, in particular to an intelligent phase voltammeter and a measuring method thereof. Background technique [0002] At present, most of the known digital double-clamp phase voltammeters select and measure power frequency voltage, current and phase by turning the knob switch. When measuring voltage, current amplitude and phase angle, not only the measurement function must be selected, but also Select the measurement limit, for example, the voltage limit is 500V, 200V, 20V, and the current limit is 10A, 2A, 200mA. The known digital double-clamp phase voltammeter has the following disadvantages: [0003] 1. When measuring voltage, current or phase, it is necessary to manually select the knob switch instead of automatic selection. If the selection is wrong, the instrument will not measure normally, or even damage the instrument; [0004] 2. The measurement of voltage and current amplitude needs to ...

AI Technical Summary

Problems solved by technology

[0003] 1. When measuring voltage, current or phase, it is necessary to manually select the knob switch instead of automatic selection. If the selection is wrong, the instrument will not measure normally, or even damage the instrument;

[0004] 2. The measurement of voltage and current amplitude needs to be manually selected, and cannot be selected automatically. If the selection is wrong, the measurement accuracy of the instrument will be insufficient, and even the instrument will be damaged.

Images