eristysvastusmittarilla
Eristysvastusmittari, often referred to as an insulation tester or megohmmeter, is an electrical instrument used to measure the electrical resistance of insulation. This measurement is crucial for assessing the integrity and safety of electrical insulation in various applications. The device works by applying a high voltage to the insulation under test and then measuring the resulting current flow. According to Ohm's law, a higher resistance will result in a lower current flow for a given voltage, indicating good insulation. Conversely, a low resistance suggests a fault or degradation in the insulation, potentially leading to short circuits, electrical shocks, or equipment failure.
These testers typically operate at higher voltages than standard multimeters, often ranging from 50 volts to