Power metering detector

Abstract

The invention discloses a power metering detector, and the detector comprises a power supply, a single-chip microcomputer, a storage unit, an LCD display screen, a power grid voltage and a power grid current. A voltage transformer is electrically connected with the single-chip microcomputer through a phase locking ring, and the single-chip microcomputer is electrically connected with a wireless communication module. The wireless communication module is in wireless electrical connection with a remote monitoring terminal. The voltage and current signals are obtained through a current clamp. The detector is convenient, quick, safe and clear in wiring, and greatly improves the safety factor. The detected data are directly stored in an internal storage unit through built-in computing software. The remote monitoring terminal, which is connected through the wireless communication module, also can monitor and record the electric quantity of a meter.

Description

technical field [0001] The invention belongs to the technical field of electric power detection, and in particular relates to an electric power measurement detector. Background technique [0002] All kinds of power metering and testing devices must be first checked in the laboratory according to the corresponding testing regulations before installation and use, but in actual field applications, the accuracy of the metering device itself does not necessarily guarantee the accuracy of power metering. In the actual operation process, due to the unreasonable measurement method, the change of the operation method, the voltage drop of the voltage transformer secondary circuit is too large, the wiring error and other reasons, the measurement error will be too large and the power loss will be serious. In the past, because the pulse signal input to the instrument during calibration was obtained by manually pressing the switch, the accuracy of the calibration result and the stability ...

AI Technical Summary

Problems solved by technology

In the actual operation process, due to reasons such as unreasonable measurement methods, changes in operation methods, excessive voltage drop in the secondary circuit of the voltage transformer, and wrong wiring, etc., the measurement error will be too large and the power loss will be serious.

In the past, because the pulse signal input to the instrument during calibration was obtained by manually pressing the switch, the accuracy of the calibration result and the stability of the calibration measurement cannot be guaranteed, and the current and voltage signals are directly connected to the current output of the meter to be calibrated or through the wiring board or wiring. The input terminal is obtained, which makes the wiring cumbersome, and it is easy to cause accidents due to wrong wiring, resulting in personal injury and economic loss of the calibration personnel. The detection data also needs to be manually recorded point by point, which consumes human resources.

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