Before the lighting electrical ready board is put into operation, it must undergo a rigorous "pressure test" - high voltage testing. This test is like doing an "angiography" for the power grid system, testing the insulation performance and safety margin of the equipment by simulating extreme working conditions.

Before testing, it is necessary to strictly follow the "three disconnections" principle: disconnect the main power supply, disconnect the load circuit, and disconnect the control circuit to ensure absolute safety in the testing environment. Use a professional voltage tester to apply 2.5 times the rated voltage for 60 seconds, and monitor the leakage current value in real time. Qualified equipment should be as stable as a rock, with a leakage current not exceeding the warning line of 100mA.

The verification process is like cracking a security password: not only do you need to check the instrument readings, but you also need to observe whether the device has a "purple glow" of corona discharge. Modern intelligent testing systems can also draw voltage current characteristic curves and predict insulation aging trends through waveform analysis. After testing, it is necessary to promptly paste qualified labels, just like issuing a "safety passport" to the electrical ready board.

This test is not only a requirement of technical specifications, but also a reverence for life. It is like a silent guardian, ensuring that every light that illuminates the way home is safe and reliable when night falls and the lights come on. As engineers often say, "High voltage testing is not about destroying art, but about exchanging controllable risks for long-term peace