Multimeter to measure surge protector
In the absence of professional testing equipment, a multimeter can be used to test surge protector performance. The specific method is to adjust the multimeter's knob to the DC voltage range, connect the red test lead of the multimeter to the positive electrode of the surge protector, and connect the black test lead to the negative electrode of the surge protector. Then, turn on the power and observe the multimeter's indication. If the indication is 0, it means that the surge protector is normal; if the indication is not 0, it means that the surge protector has failed.
However, since the special function of a surge protector is to suppress direct lightning, induced lightning or other transient overvoltages and discharge surge energy, a conventional multimeter may not be able to accurately test the performance of a surge protector and can only be used as a reference. At the same time, please note that when measuring a surge protector, you need to pay attention to the power supply to prevent electric shock and arcing, and ensure that the range of the multimeter is correctly selected.