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Cable identifying method and cable identifying instrument

A cable identification instrument, cable technology, applied in the phase angle between voltage and current, instrument, measuring electricity and other directions, can solve problems such as reducing cable identification efficiency, reducing service quality, cumbersome operations, etc., to simplify operation and ensure service. quality, and the effect of reducing economic losses

Inactive Publication Date: 2007-06-27
北京宏恩控股有限公司
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Problems solved by technology

[0005] From the above-mentioned existing pulse current method, it can be seen that before the cable identification, the target cable must be in a power-off state. On the one hand, it will bring more cumbersome operations and reduce the efficiency of cable identification; It will cause economic loss and reduce the quality of service

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  • Cable identifying method and cable identifying instrument

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Embodiment Construction

[0043] The core idea of ​​the present invention is: to couple an external AC signal from one end of a pre-selected target cable in a group of cables into the target cable, couple the AC current of each cable to the other end of the group of cables, and detect the AC current of each cable. The phase of the coupled-out current, according to which phase the target cable is selected.

[0044] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments.

[0045] Fig. 2 is the flow chart of cable identification method of the present invention, selects an end of target cable from a group of cables in advance, comprises the following steps:

[0046] Step 200: Indirectly coupling an external AC signal from one end of a target cable in a set of cables into the target cable.

[0047] Step 201: Coupling and outputting t...

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Abstract

Through indirect coupling, the method inputs outer AC signals to target cables in a set of cable. The other end of the set of cable outputs coupled AC current of each cable respectively. Detecting phase of each coupled output current, the method selects target cables based on phases. The invention also discloses a cable identification instrument. Before identifying cable, the method does not need to disconnect connections between two ends of each cable and equipment of transformer, switchgear, i.e. cable is in electrification state. Features are: simplifying operation for identifying cables, raised efficiency for identifying cables, reducing emergent loss caused by power cut so as to guarantee quality of service.

Description

technical field [0001] The invention relates to electric system detection technology, in particular to a cable identification method and a cable identification device. Background technique [0002] Identifying the target cable from a group of cables is a very important task in cable engineering. [0003] At present, the widely used cable identification method is the pulse current method, as shown in Figure 1, which is a schematic diagram of the principle of the prior art pulse current method, assuming that a group of cables includes two cables L1 and cable L2, and cable L1 and cable L2 Lay side by side, and assume that the cable L1 is the target cable; before identifying the cable, disconnect the connection between the two ends of the cable L1 and the power transformation and distribution equipment, that is, the cable is in a de-energized state, and disconnect the grounding of the metal armor at both ends of the cable L1 as shown in the figure As shown by "X" in 1, the meta...

Claims

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Application Information

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IPC IPC(8): G01R25/00G01R31/00
Inventor 高胜友赵秀山
Owner 北京宏恩控股有限公司
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