NOYAFA Electronic specializing in testing instruments and cable testers for 16 years
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NOYAFA Electronic specializing in testing instruments and cable testers for 16 years
Author: Noyafa–CCTV Tester
How to choose a cable fault tester The selection of a cable fault tester has always been a puzzle and headache for users in all walks of life. Due to the diversity of cables, the diversity and complexity of cable faults make it possible to choose a set of The selection of cable fault testers has always been a puzzle and headache for users in all walks of life. Due to the diversity of cables, the diversity and complexity of cable faults make it difficult to choose a It is particularly important to have a cable fault detection equipment that suits you. So, how to choose the right one for you? Zibo Xinyijie will talk about it here, hoping to help everyone. It is said that cable faults cannot bypass cable types, and cable types cannot bypass industry segmentation. Let's talk about the industry. Before talking about the industry, generally understand the classification of failures.
At present, the materials, structures, uses, laying methods, voltage levels and wiring methods of cables used in various industries in the market are not the same. Its common fault characteristics and solutions are also different. However, at present, the manufacturers of cable fault testers on the market are mixed, and there is no product that can solve various cable faults well. Gold Combination,) After purchasing this type of product, many users find that the instrument itself is not suitable for solving the cable failure in their own industry, so they will be idle for a long time, wasting money.
In fact, users are not limited to considering only one product, they can scientifically select such products according to the characteristics of the cable in their industry, and select the most suitable cable fault test combination, which can greatly improve work efficiency and avoid unnecessary waste of money. According to the user's industry, cable type and different characteristics of common faults, the following cable fault test combinations can be reasonably selected by the majority of users. Power enterprise users: power supply enterprises have a large number of power transmission and distribution systems and long lines.
The main concern is the failure of high-voltage cables; its common failures are divided into two categories, one is the sudden failure of the cable during operation. Its fault characteristics are fully manifested, such as complete short circuit, complete open circuit, dead grounding, obvious damage at the fault point, and contact with the soil at the fault point, which accounts for the vast majority of such faults. We might call it operational faults, and there are other types of faults that are high-resistance leakage faults and flashover-type faults found during pre-testing.
We call this kind of failure a pretest failure. At present, the cable fault testers used in the power sector are basically based on“dash”The cable fault tester designed and produced for the principle; in terms of its principle, it is most suitable to solve the high-resistance leakage and high-resistance flashover type faults. , the voltage is high, the sound is loud, and it is easy to set a point on the ground, and there is only one solution in the world at present, but such failures are not very common.
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