Digital multimeter | How to quickly test the quality of the multimeter fuse?
For engineers who often deal with "electricity", "safety" is always the first priority. The multimeter is an essential testing tool for electricians, so the safety of using the multimeter is particularly important for front-line engineers. As we all know, the multimeter has a built-in fuse in the current range. The purpose is to ensure that when testing the current, the multimeter is connected in series to the loop. Once the loop current exceeds the standard or dangerous current exists, the fuse can be broken in time to ensure that the instrument, especially Operator safety.
How to choose the right fuse?
In order to ensure the safety of the instrument and the user, it is particularly important to choose a suitable and safe fuse. Fluke multimeters are all equipped with high-energy, ultra-fast response original fuses to ensure that in the event of an accident, the meter can quickly shield out possible dangers. Fluke original fuses have always been designed to meet or even exceed the stringent requirements of international safety standards.
Advantages of fuses:
1. Rated voltage 1000V, 11A fuse breaking capacity 20KA. The original high-energy fuse can not only blow under continuous rated current, but also blow immediately under very high instantaneous current, ensuring fast response and safety.
2. Ceramic tube packaging, strong arc extinguishing ability and high reliability. The specially designed original high-energy fuse is filled with sand. When the energy and temperature leading to explosion are generated, the sand melts, absorbs the energy and isolates the air required for explosion combustion.
Dangers of using the wrong fuse:
Meters burned out; test leads melted; casualties.
I would rather not install a fuse than install a regular fuse!
How to quickly detect whether the fuse is good or bad?
Turn the multimeter to the "Ω" position, use only one test pen, insert the plug into the Ω jack, and insert the tip of the pen into the "A" and "mA/uA" jacks respectively. If there is a reading, it means the fuse Good (the "A" jack reading should be 0-0.5Ω, the "mA/uA" jack reading should be about 10KΩ), if "OL" is displayed, it means the fuse is burned out.
