GROUNDING CHECKING METHOD AND GROUNDING CHECKING APPARATUS

摘要

A grounding checking method comprises the following steps: turning on a first switch unit to connect a ground terminal through a lead line; turning on a second switch unit and a third switch unit to temporarily provide a reference resistor while checking whether grounding; turning on a fourth switch unit and a seventh switch unit to measure voltage between a positive electrode terminal and the ground terminal; turning off the seventh switch and turning on a sixth switch unit to measure voltage between a negative electrode terminal and the ground terminal; and turning off the fourth switch unit and the sixth switch unit and turning on a fifth switch unit and the seventh switch unit to measure voltage between the positive electrode terminal and the negative electrode terminal.;COPYRIGHT KIPO 2016