Cable identifying method and cable identifying instrument

A cable identification instrument and cable technology, which is applied to the phase angle between voltage and current, instruments, and measuring electricity, can solve the problems of reducing cable identification efficiency, reducing service quality, and cumbersome operations, so as to simplify operation and ensure service Quality, the effect of reducing economic losses
CN100489545CInactive Publication Date: 2009-05-20北京宏恩控股有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
北京宏恩控股有限公司
Publication Date
2009-05-20
Estimated Expiration
Not applicable · inactive patent

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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.
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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, such as figure 1 as shown, figure 1 It is a schematic diagram of the principle of the pulse current method in the prior art, assuming that a group of cables includes two cables L1 and cable L2, the cables L1 and the cables L2 are laid side by side, and the cable L1 is assumed to be the target cable; before identifying the cables, disconnect both ends of the cable L1 The connection with the power transformation and distribution equipment means that the cable is in a de-energized state, and at the same time disconnect the grounding of the metal armor at both ends of the cable L1, such as fi...

Claims

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