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SIM-Q MKII, Advanced insulation monitor for AC/DC network
The SIM-Q MKII is particularly suitable for high-end monitoring of AC/DC networks characterised by high leakage capacitance. A low frequency (LF) version of the SIM-Q MKII is available for thruster systems with 5-20Hz frequency variations.
The SIM-Q MKII uses a patented measuring method, where a ±25 V DC voltage is superimposed to the system being monitored. To be able to eliminate the influence from the monitored network capacitances and AC/DC components, the SIM-Q MKII performs an automatic measuring cycle that will compensate for these.
The ability of the SIM-Q MKII to measure large capacitances results in long measurement cycles due to the charging and discharging of the network leakage capacitance.
To ensure a fast reacting product during fault-finding, the SIM-Q MKII has been equipped with three selectable modes for optimal performance: