What is a Voltage detector?

A voltage detector is a device that checks the voltage. Unlike testers, you cannot check the voltage value. You can check the voltage detector that you hold in your hand just by applying it to the charging path you want to investigate, and when there is voltage, there are many things that make a beeping sound. Also, depending on the voltage detector, there are those for low voltage and those for high voltage, and those for AC and AC / DC, so it is necessary to use them properly. It is also necessary to know whether the target charging path is AC or DC.

Application of Voltage detector

A voltage detector is used to check for no voltage in the charging path. In the case of low-voltage electrical work, check that the terminal block is non-voltage just before the work. In the case of high voltage, after opening the power supply with a circuit breaker or disconnector, the voltage detection work is performed at the lower charging unit. High-voltage electric circuits are often relatively alternating current, but after the circuit breaker is opened, they may be charged with electricity as a DC component called residual charge, so voltage detection is performed with both alternating current and direct current detectors. is needed.

※Includes information on some trading companies