Quick Tips for Using a Multimeter to Find Electrical Equipment Leakage
A small experience of quickly finding electrical equipment leakage with a multimeter
As is well known, electrical equipment leakage can occur at any time. How to detect leakage in a timely manner? Here are several simple methods for everyone to try.
Firstly, use a multimeter to measure the leakage voltage. Place the multimeter switch in the AC voltage measurement mode, usually at 250V AC voltage. Then insert the black probe into the soil near the device being measured and connect the red probe to the metal casing of the device. At this point, look at the reading on the multimeter. If the needle does not move, you can switch to low gear one by one until the specific data is displayed, which is the leakage voltage of the device. If there is still no indication when the probe is in * low gear, it means that there is no leakage phenomenon in the device.
Secondly, use a voltage tester to check for any electrical leakage. The inspector holds the test pen and directly connects it to the metal casing of the electrical equipment. When the neon tube in the test pen lights up, it indicates that there is a leakage phenomenon in the equipment and that the leakage voltage is high. When the neon tube does not light up, it does not indicate that there is no leakage phenomenon in the equipment. It may be due to low leakage voltage, and the neon tube may not light up, or there may be no leakage voltage.
Thirdly, when there is no multimeter or voltage tester, you can touch the metal casing of the electrical device with the back of your hand. When there is numbness or electric shock, it indicates that the device has leakage voltage. When there is a sense of electric shock, it is necessary to be vigilant, indicating that the leakage voltage is relatively high. Stop the machine to check and analyze the cause, eliminate the fault before use, otherwise electric shock accidents may occur.
