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
The cable is responsible for transmitting electricity, so it is important to ensure that the cable can be used normally. What if the cable has a fault? This requires the use of cable fault testers to find fault points, and then the professional staff will carry out major responsibility for transmission of electricity, so it is important to ensure that the cable can be used normally. What if the cable has a fault? This requires the use of cable fault testers to find fault points and then serviced by professional staff.
The type of device is different, and the configuration is different, so how do you choose the right cable fault tester? We together look. Since the cable fault type is divided into high-resistance, low-resistance, disconnection and composite faults, the current market-selling cable fault detector is generally high and low pressure, including more components and accessories, and a set of equipment components. Then 5-6 pieces, more than 10-11 pieces. As a cable manufacturer, it is necessary to transfer the various cable faults in the production process in the factory to ensure timely delivery; at the same time, it is necessary to take into account the customer's field cable, and the cable sudden failure is completed. position.
Therefore, as a cable manufacturer, when purchasing a cable fault detector, it is a high-pressure completed purchase configuration. The equipment components are 6-10 pieces. At the time of direct buried cable faults in the customer, the entire set of equipment Dedicated cable fault detection cars, otherwise the quality of the instrument is not guaranteed. There are also some special cable fault detectors, such as railway outdoor sets of cable fault detectors, more specific can be called: railroad single-core cable external sheath fault tester, these two configured cable fault tester suitable railroads Uploaded, this instrument is characterized by the characteristics of the railway cable outer sheath, the ground fault of the cable outer sheath or voltage drop is initiated by the cable sheath or voltage drop, and then cooperate with special receivers. Implement the accurate finding of the fault point. The instrument has a high-precision measuring unit. If there is a good auxiliary cable sheath, use the bridge method to initially test the fault, no need to move the instrument to the peer, the test instrument can directly display the fault distance, realize fast measurement, if there is no auxiliary cable Set, it can also be tested on both ends of the fault cable outer jacket. If the resistance (voltage) comparison method is calculated, the outer sheath is calculated, if the absorbent value per kilometer of the jacket is known, through the fault cable outer sheath Single-ended pressure drop testing can calculate the outer sheath failure distance.
The outer sheath transmitter and the fixed-point receiver can realize the accuracy of the fault of cable sheath. The cable fault detector currently sold on the market is mainly divided into two types: one is the cable fault detector designed according to the principle of echo method: the components mainly include intelligent waveform detection analyzers, path meters, DC high voltage generators (including operation) Test transformers, capacitance, gap, fixed-point instrument, etc. The second is a cable fault detector designed and manufactured according to the principle of the bridge. The components main package fault positioning bridge (high and low pressure bridge), fixed-point, path instrument, wave reflection fault positioning instrument, etc.
The above is the method of purchasing the cable fault tester, hoping to help people with needs. Dear friends, we will see it next time.
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