MAIN CHARACTERISTICS range VIGILOHM range of product VIGILOHM product name VIGILOHM IM device short name IM20-H product or component type INSULATION MONITORING DEVICE device application HOSPITAL earthing system IT language CHINESE COMPLEMETARY CHARACTERISTICS network rated voltage 0...230 V AC 50 60 HZ PHASE TO NEUTRAL type of measurement network insulation resistance : 1 kOhm...10 MOhm local signalling GREEN INDICATOR LIGHT SATISFACTORY INSULATION RESISTANCE threshold setting FAULT 50..500 KOHM response time