The wiring harness test is to test the wiring components and insulating wrapping materials connected to various electrical equipment in the circuit to find out possible problems. Generally, it is necessary to measure the continuity, insulation, withstand voltage, and resistance of a wiring harness.
Low-voltage continuity test: apply a certain current to the cable to be tested, measure the voltage value and current value at the end of the cable, and use Ohm's law to convert the measurement results inside the tester to obtain an accurate resistance value. Use this resistance value to compare with the resistance value set by the user to determine whether it meets the user's index requirements, and display the judgment result on the computer in the form of a clear message of "pass" or "failure" to inform the user.
Insulation test: After passing the low-voltage continuity test, conduct an insulation test. During the insulation test, the tester applies a certain high voltage to the cable to be tested, and the other cables are connected to the ground wire to measure the current between the cables. If the current exceeds the current value set by the user, it is considered that the wire Cable failed. When the current value set by the user is satisfied, the insulation resistance value at this time is measured. And the judgment result will be displayed on the computer in the form of a clear message of "pass" or "fail" to inform the user.
Withstand voltage test: apply a high voltage to the cable to be tested for a certain period of time, and measure the current on the cable. If the actual current exceeds the current value set by the user, the cable is considered unqualified. And the judgment result will be displayed on the computer in the form of a clear message of "pass" or "fail" to inform the user.
Continuity test function: Quickly test the connection relationship of unknown cable harnesses made by cable and harness manufacturers, and determine whether there is a short circuit, open circuit, miswiring and other faults
Low resistance test function: Kelvin four-wire test method accurately measures resistance, detects small changes in contact resistance, and finds quality hidden dangers such as poor contact, broken wire core strands, and virtual welding, with high precision and fast speed
Insulation test function: automatically completes multi-point insulation test, the boost time and test time can be adjusted, and the test voltage is DC50V incremental; fast test insulation resistance between wires and wires, wires and shells
Withstand voltage test function: automatic completion of multi-point withstand voltage test, boost time, test time can be adjusted, test voltage AC50V incremental; test line and line, line and shell leakage current
Electronic component test function (optional): diode test, resistance test, capacitance test
Distributed and distributed test function (optional): realize long-distance communication equipment (including main and auxiliary machines) within 100m through public lines