HMCXZ cable AC withstand voltage tester usually includes the following parts:
1.High-voltage generator: It is used to generate high-voltage AC power supply, usually including a power supply part and a high-voltage transformer part.
2.Ammeter: It is used to measure the leakage current of the cable under high voltage to judge the insulation performance of the cable.
3.Voltmeter: It is used to measure the withstand voltage performance of a cable at high voltage, usually including a peak voltmeter and a rms voltmeter.
4.Control system: It is used to control the output voltage and frequency of the high-voltage generator, as well as to monitor the change of current and voltage.
5.Data Logging and Display System: It is used to record and display data such as current, voltage and time of the cable at high voltage for subsequent analysis and reporting.
These parts are usually integrated together to form a complete cable AC hipot test objector, which can be used to perform hipot tests on various types of cables.
The working principle of HMCXZ cable AC withstand voltage tester mainly includes the following aspects:
1.Power supply system: The cable AC withstand voltage test instrument needs to be connected to the power supply to work normally, usually using AC power supply, and the electric energy is converted into the required working voltage and current through the power supply system.
2.Control system: The control system is the core part of the cable AC withstand voltage test instrument, through which the control system can realize the precise control and adjustment of working voltage, current, time and other parameters to ensure the accuracy and reliability of the test.
3.Test circuit: The test circuit is the part used to apply high-voltage voltage to the cable under test, usually including high-voltage winding, insulating materials, etc., through the test circuit, the voltage and current output of the high-voltage power supply can be applied to the cable under test for testing.
4.Measurement system: The measurement system is used to measure the voltage, current and other parameters on the tested cable, usually including voltmeter, ammeter, oscilloscope and other instruments, and the voltage resistance and insulation status of the tested cable can be obtained through the measurement system.
5.Safety protection system: The safety protection system is the part used to protect operators and equipment, including over-voltage protection, over-current protection, leakage protection and other functions to ensure safety and stability during the test.
To sum up, the working principle of the cable AC withstand voltage test instrument is mainly to provide working voltage and current through the power supply system, realize the precise control of the test parameters through the control system, apply high-voltage voltage to the tested cable through the test circuit, obtain the test results through the measurement system, and ensure the safety and stability of the test process through the safety protection system.