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
Cable fault tester is a commonly used cable fault detection device that uses a variety of cable fault detection, its performance is stable, accurate, making cable failure detection work more. The work efficiency of the test personnel is greatly improved. This cable fault tester is a common cable fault detection device, which uses a variety of cable fault detection, its performance is stable, accurate, making cable failure detection work more.
The work efficiency of the test personnel is greatly improved. Today we mainly explore the composition of the charging cable fault tester. Test of a charging cable fault tester: First, the charging tester is composed of the following components: 1, the instrument host: cable faulty testizer, referred to as the flashur tester.
Cable path test source, referred to as path tester. Cable fault design / path gauge, referred to as a fixed point. 2, high pressure accessories: high pressure pulse capacitor.
A high-pressure test transformer with a DC. High pressure test transformer operating case. Second, the test function of the cable fault tester is: 1. Use: suitable for various cross-section, power cable, high frequency coaxial cable, high-frequency coaxial cable, municipal cable, street light cable, buried line, etc. Test, short-circuit fault test, open circuit fault test, high-resistance leakage failure test, high resistance flashing fault test.
Specifically, there are several types: (1) Testable cable Press voltage equivalent: low-voltage cable, high voltage cable. (2) Testable cable is divided into: power transmission cable; control cable; street light cable. (3) Testable cable is divided into: there is a straight-buried cable, a cable gutter, an air cable and a low-voltage electric wire that are directly buried in two or more parallel.
(4) Testable cable is divided into: short-circuit fault; off phase failure; low-resistance failure; high-resistance leakage failure; high-resistant lighting failure, fault classification has been described in detail. (5) If there is a cable identifier, you can complete a plurality of cables embedded in the cable, find a cable we are looking for, which is the cable recognizer. (6) Fault testing and cable identification are tested for break-off cables, and the power running cable cannot be tested.
Third, the test principle of the cable fault tester: 1. This set of instrument host is a host, mainly for cable fault testing. 2. For cable faults, the tensile instrument can measure the approximate distance from the fault point to the end of the cable. 3. Lightning meter can measure the speed of the cable length and the electromagnetic wave propagation speed of the cable.
The test principle of the lightning meter is the radar reflection method, also known as a pulse reflection method. Lightning meter single-end test distance:≤15km. Lightning meter shortest test distance (blind zone): 15-20 meters.
4, cable fault tester measurement error: coarse test error±1%, system (point) error±0.2m. In short, it is possible to discover a pit after accurately determine the fault point. 5. The principle of the cable fault detector finding the cable path is to add an electromagnetic wave signal on the cable being measured, and the test cable path signal is received by the fixed point.
Determine the embedding position of the cable by receiving the minimum characteristics of the electromagnetic signal from the upper ground floor. The above is the introduction of charging cable fault tester test, do you understand? Pay attention to Xiaobian, more exciting, all in the next period! .
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