Insulation monitor
For leakage capacitances up to 1000 µF
As unexpected insulation faults in systems can lead to unwanted supply failures and even personal injury and material damage, insulation monitoring devices are required in unearthed IT systems. The insulation monitor RN 5897 ...
... from Dold's 'Varimeter IMD' series was developed especially for use in modern power supplies. These often contain converters, power converters, thyristor regulators and directly connected DC components. Due to EMC interference suppression measures, these systems usually have high leakage capacitances to earth. The insulation monitor is suitable for system leakage capacitances up to 1000 µF and for voltages up to 300 V (DC/AC). It can be used in systems with voltages up to 760 V(AC) and 1000 V(DC) via an additional ballast. In addition to an adjustable alarm threshold, the insulation monitor has an adjustable pre-warning threshold. A multi-colored LCD display provides constant information about the current insulation value. The insulation monitor ensures reliable monitoring even when the system is de-energized. Selective earth fault detection according to L+ and L- enables fast fault localization.
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