device for controlling the ableitwiderstandes or the erdableitwiderstandes and standortübergangswiderstandes

摘要

The invention relates to a device for determining the leak resistance or earth-leakage resistance by using a DC measuring voltage (measurement according to DIN 51953), as well as the site contact resistance by using an AC measuring voltage (measurement according to VDE 0100g, &sect& 24). The measured resistance (RX) sought is, in both cases, determined with the aid of a measuring circuit (7) constructed according to the principle of "voltage comparison" and is output via an evaluation and indication unit (5). IMAGE