The ground resistance tester mainly measures the ground resistance of the equipment or facility under test by testing circuits, voltage measurement, and current measurement. By accurately measuring the value of ground resistance, you can ensure the safe operation of electrical equipment and protect personnel from electric shock and equipment damage.
For example:
1. Voltage measurement: The ground resistance tester measures the voltage on the ground circuit of the equipment under test through the internal voltage measurement circuit. A voltage measurement circuit usually contains a high-impedance voltage meter and an amplifier that amplifies the weak voltage signal on the ground circuit so that it can be read by the tester.

2. Current source: The ground resistance tester usually contains a power supply inside, which can provide the current required for the test circuit. The output current of the current source is usually between a few milliamperes and several amperes.

To ensure that you choose a suitable atmospheric electric field instrument, JLSP provides professional guidance. We are well aware of users' needs and concerns and are committed to providing users with high-quality lightning warning solutions. The intelligent grounding resistance meter developed and produced by our company can provide accurate and safe test data and has been recognized and supported by consumers.