Do Not Be Afraid of Sudden Cable Failure, Three Points Are Sufficient To Detect The Failure Point

I think we all know that solar photovoltaic cable in the use of the process will inevitably appear security failures, and from an objective point of view to think, the cost of the cable is not low if the direct replacement of the cable then the cost is relatively too high, therefore, when the cable failure, the priority solution is to repair the fault point, then how should we find the fault point before repairing it? The following XSD cable will introduce you to three methods of locating cable faults, take a look.

After the cable fault, the general lateral search steps are as follows.

1、Judging the nature of the fault

According to the phenomenon when the fault occurs and some simple tests, the initial judgment of the nature of the fault, determine whether the fault resistance is high resistance or low resistance, flash or closed fault, grounding short circuit, break, or a mixture of them, single-phase, two-phase or three-phase fault. For example, when a fault occurs in the operating cable, there is always a grounding signal, it may be a single-phase ground fault; if the relay protection overcurrent trips, there may be a two-phase or three-phase short circuit, or short circuit and grounding mixed fault, through the initial judgment, can not completely determine the nature of the fault, you must measure the insulation resistance and conduct a conductivity test.

2. Cable path measurement search

For incomplete drawings or unknown cable path, audio induction detection method and pulse magnetic field method can be used to find the fault cable laying path and buried depth, for fixed precision measurement, audio induction detection method is the audio signal current through the wire, according to the strength of the audio signal received by the receiver in the receiving coil to determine the path.

3, accurate fault point measurement point

Through the pulse discharge acoustic measurement method, audio induction method, acoustic-magnetic synchronous detection method to determine the precise location of the fault point, acoustic measurement method is only applicable to low-resistance grounding cable fault, the metal grounding fault is less effective, it is worth noting here that the induction method is applicable to metal grounding faults and phase-to-phase short circuit faults.

Well, said three points about the measurement of photovoltaic cable fault detection methods, you get it, but also want to know more related news and information, please pay attention to our company XSD cable official website, the follow-up will also push you more related news and information, please pay attention ~