Insulation monitoring for unearthed AC, AC/DC systems 0…793 V, DC 0…650 V • Nominal voltage extendable via coupling device • Two separately adjustable response values1 k?…10 M? • AMPPlus measurement method • Automatic adaptation to the system leakage capacitance • Info button to display device settings and system leakage capacitance • Self monitoring with automatic alarm • Automatic self test, selectable • Connection for external k? indication • Test and reset button • External test/reset button can be connected • Two separate alarm relays with two potential-free changeover contacts • N/O or N/C operation, selectable • Backlit LC display • RS-485 interface