The following is the general operation of the cold withstand voltage test of electric heating tubes:
1. Preparation: Ensure the safety of the laboratory or workplace, prepare the required equipment and tools, including power supply, electric heating pipe, cold withstand voltage test equipment (such as high-voltage power supply and voltmeter), insulating gloves, safety glasses, etc.
2. Connect the electric heating pipe: Connect the electric heating pipe between the power supply and the cold withstand voltage test equipment to ensure that the electric heating tube is correctly connected to the circuit to avoid short circuit or overload.
3. Check before power-on: make sure that the power supply and circuit connection are correct, and the appearance of the electric heating tube is not damaged, and there are no visible cracks or damage.
4. Start the test: gradually increase the power supply voltage to carry out the cold withstand voltage test of the electric heating tube. During the boost process, it is necessary to observe the reaction of the electric heating tube and record the breakdown voltage and discharge voltage.
5. Data analysis: analyze the obtained voltage data to determine the cold withstand voltage performance of the electric heating tube. Compare the measured data with the rated parameters of the electric heating tube to determine whether it meets the requirements.
6. End the test: At the end of the test, gradually reduce the voltage to zero, turn off the power, and then safely remove the electric heating pipe.
7. Record and report: record test data and results, and write detailed test reports, including test conditions, results and conclusions.
The above are general steps, and the specific operation may vary depending on the specific equipment and specific requirements. When operating, please make appropriate adjustments according to the specific situation.
