The quality of glass fuses can be distinguished by the following methods:
Using a multimeter to measure resistance method: Set the multimeter to the resistance range and measure the resistance value of the fuse. If the resistance value is below 1 ohm, it indicates that the fuse is good; If the resistance value is above tens of ohms, it indicates that the fuse may have been damaged.
Measurement of temperature fuse: Connect the two probes of the multimeter to the two leads of the temperature fuse, and use the continuity test gear of the multimeter to measure its continuity. If the multimeter shows continuity and there is a sound, it indicates that the temperature fuse is good; On the contrary, it is bad.
For car fuses, the following methods can be used to determine:
Measure using a multimeter. If there is no multimeter, you can use an electric pen to test. Use a pointed pliers to clamp the fuse, touch one end with a live wire, and measure the other end with an electric pen. If the electric pen is on, it indicates normal operation, and if it is not on, it indicates that the fuse is broken.
For enclosed car fuses, it can be determined by checking the end of the test pen.
By using the above methods, the quality of glass fuses can be effectively judged to ensure the safe operation of the circuit.