A Controllable Characteristic Load for Cable Routing Accuracy Detection

An accurate and characteristic technology, applied in the field of controllable characteristic load, can solve the problems of poor detection reliability and labor-intensive

CN106569084BActive Publication Date: 2019-04-02HANGZHOU PUAN TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2019-04-02

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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.
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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...

Examples

Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the present invention is not limited to these embodiments.

[0023] The present invention covers any alternatives, modifications, equivalent methods and schemes made on the spirit and scope of the present invention. In order to provide the public with a thorough understanding of the present invention, specific details are set forth in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, for the sake of illustration, the drawings of the present invention are not completely drawn according to the actual scale, and are described here.

[0024] Such as figure 1 As shown, the controllable characteristic load of the cable wiring accuracy detection of the present invention includes a power supply part, a main contr...