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 emergence of electricity broke the original lighting method, providing us with a convenient, comfortable living environment. The cable has the effect of transmitting electrical energy and has a very important role in life. The power demand is so large. Sometimes the cable is inevitable, breaking the original lighting method, providing us with a convenient, comfortable living environment.
The cable has the effect of transmitting electrical energy and has a very important role in life. The power demand is so large, sometimes the cable is inevitable. The charging cable recognizer is one of the commonly used fault detection devices.
1. The operator should read the instruction manual in advance and master the function, working methods, work preparation of the instrument, and conduct the correct test requirements. 2. Before the test, use the armor to ground both ends of the tested wire and ground the distal end of the core wire. 3, the two output lines of the cable recognizer should be redded in the core wire and black grounded by the reddish wire.
4. Before turning on the transmitter, the counterclockwise needed to rotate the output adjustment knob must be rotated to zero. Slowly adjust the output adjustment knob to reach the output to 5A-15A (usually adjusted in a row of two-thirds). If the grounding resistance value of the power distribution station system is greater than 4 ohms, the output current is less than 8A, and the receiver instrument head can work normally as long as it can be deflected in the forward and negative direction.
5. Note: When used on-site, if the ground resistance is too small, the output adjustment knob of the transmitter is zero in a clock cycle, and the output current will be very large, and there is a protection circuit action in the transmitter (a display plug has one Small swing) In Article 2, in the actual test, the connection between the two transformer chambers between the same cable catheter and other cables exceeds two, and the ground resistance is connected to the other running armored cables and changes. Small, even close to zero, the transmitter output current is too large and the protection circuit can be tested in the transmitter circuit test. After the test, the temperature of the test resistance is high. Please note that other 1-2 ohmic resistance of more than 20W can be used to replace the test resistance.
6. Before the field recognition cable, in accordance with the requirements of the instrument calibration in the instruction manual, the receiver of the charging cable recognizer is calibrated at the start of the wire. 7, standards for cable field recognition: When the sensor is pasted on one of the cables, the header of the receiver will be biased toward one side and swing more. When testing on other cables (the same is the same as the taciting direction of the sensor), the receiver instrument head will be biased toward the other side and the swing is small.
The receiver instrument head is biased toward one side and the cable that is largely swing is a cable that needs to be identified. When operating the charging cable recognizer, you need to pay attention to the above, do you remember? Friends who want to learn other knowledge remember to continue to pay attention to Xiaobian, more exciting content, all in the next period! .
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