Erdungsmessgerät
An Erdungsmessgerät, also known as an earth tester or ground resistance tester, is an electrical instrument used to measure the resistance of an earth electrode or grounding system. This measurement is crucial for ensuring the safety and effectiveness of electrical installations. A low earth resistance is necessary to provide a safe path for fault currents to dissipate into the ground, preventing dangerous voltage build-ups on equipment housings and reducing the risk of electric shock.
These devices typically operate by injecting a known current into the earth electrode and measuring the resulting
Modern Erdungsmessgeräte are often digital, providing a clear display of the resistance value. They may also