The MR 627 offers the most extensive range of functions and the widest range of applications among the insulation monitors.

By selecting the measuring principle to be applied, the user can achieve optimum adaptation to the system to be monitored. The system can be an IT AC system, an IT DC system, an electrically connected IT AC/DC or IT three-phase/DC system.

Nominal voltages up to 690 V DC or up to 690 V AC can be accommodated. The built-in RS 485 interface allows communication with a PC or with an RS 485 bus system.