SIM-Q MKII
Installation/operation instructions
DEIF A/S
Page 5 of 18
2 Description
2.1
General description of SIM-Q MKII
The SIM-Q MKII is intended for insulation monitoring on a single-phase or a 3-phase IT power
system with or without neutral. The special characteristic of an IT power system is the fact that
no live conductor is connected directly to earth. The SIM-Q MKII is connected to the power system
by connecting the terminal marked
P
to one of the phases (or the neutral). The FE input is then
connected to the safety cable. To be able to monitor any kind of insulation failure, all accessible
conductive building structures must be connected to the cable marked
FE
(functional earth).
