A Controllable Characteristic Load for Cable Routing Accuracy Detection

Abstract

The invention discloses a controllable characteristic load used for cable cabling accuracy detection. The controllable characteristic load comprises a power supply part, a main control circuit, a line reverse connection detection circuit and a characteristic load access circuit. The power supply part powers the main control circuit, the line reverse connection detection circuit and the characteristic load access circuit. The line reverse connection detection circuit and the characteristic load access circuit are connected with a cable to be detected. The main control circuit is electrically connected with the line reverse connection detection circuit and a characteristic load access circuit. According to the invention, based on problems existing in the prior art, whether a line is in reverse connection is judged according to voltage characteristics between a neutral line and a ground line; in particular, the characteristic load access circuit generates reactive power on the cable to be detected, and the circuit accuracy is judged through power changes; the invention further provides a reliable judgment mechanism to cooperate with the controllable characteristic load to realize a simple and reliable detection scheme which is operated by a single person; and the line correctness is effectively investigated.

Description

technical field [0001] The invention relates to the technical field of circuit detection, in particular to a controllable characteristic load for cable wiring accuracy detection. Background technique [0002] According to the necessary operating procedures for newly installed electric power users, each new installed user must conduct two routine line corresponding investigations, namely: [0003] (1) Check whether the line reaches the home: [0004] Operational requirements: After the power line is installed and before the power is turned on, check whether the power line from the meter box to the user end is connected. In the prior art, the inspectors short-circuit the power lines in the meter box, and use a multimeter to measure whether they are connected from house to house. However, there is still the problem that collusion accounts cannot be completely ruled out. [0005] (2) Check the matching between the installed electric energy meter and the corresponding househol...

AI Technical Summary

Problems solved by technology

[0011] In view of this, the technical problem to be solved by the present invention is to provide a controllable characteristic load for cable wiring accuracy detection that is simple, reliable, and high in detection efficiency, so as to solve the problems of labor-intensive and poor detection reliability in the prior art

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