Isolation fault detection device and device for insulation fault localisation in an unearthed power supply network

摘要

The insulation fault detection device (2) has a channel, a current measuring device (20) and an evaluation device (24). The current measuring device and the evaluation device are formed as integrated structural unit in the form of an attachment or an adapter portion. A testing device is provided for generating a test current. The current measuring device is provided with a shunt resistor (26) and a signal current transducer (28) for measuring the load current.