ISOMETER® IR427 with alarm indicator and test combination MK7 Insulation monitoring device with integrated load and temperature monitoring for medical IT systems in accordance with IEC 60364-7-710, IEC 61557-8 and DIN VDE 0100-710

Insulation monitoring device with integrated load and temperature monitoring for medical IT systems in accordance with IEC 60364-7-710 and DIN VDE 0100-710 with alarm indicator and test combination MK7 Product description The ISOMETER® of the IR427 series is designed to monitor the insulation resistance of AC circuits (medical IT systems). At the same time, the load current and temperature of the IT system transformer can be monitored. Application M edical IT systems in accordance with IEC 60364-7-710, IEC 61557-8 and DIN VDE 0100-710. Function The insulation monitoring device monitors the insulation...

5 - TEST button (> 2s): Call up the self test Arrow up key: parameter change to move up in the menu 6 - Arrow down key: parameter change to move down in the menu 7 - MENU key (> 2s): To call up the menu system Enter key: To confirm parameter change Test button ”TEST“ Wiring diagram 1 - onnection to the IT system being C monitored = supply voltage US via fuse 2 - Temperature sensor 3 - easuring current transformer for load M current monitoring 4 - onnection alarm indicator and test C combination MK7 (max. 4 pieces) 5 - ine protection by a fuse in accordance L with IEC 60364-4-43 (6 A fuse recommended)....

Application example Ordering information Nominal system voltage Un1) MK7 Remote alarm indicator and test combination Device version with screw terminals on request. 1) Absolute values Accessories Suitable system components Type designation Mounting clip for screw mounting (1 piece per device) Type designation Measuring current transformers Temperature sensor (PTC) Mounting frame

Technical data ISOMETER® IR427 Insulation coordination acc. to IEC 60664-1/IEC 60664-3 Rated insulation voltage Rated impulse voltage/pollution degree Protective separation (reinforced insulation) between (11, 12, 14) Voltage test acc. to IEC 61010-1 Supply voltage Supply voltage US Power consumption Insulation monitoring Response value Ran Relative uncertainty Hysteresis Response time tan at RF = 0.5 x Ran and Ce = 0.5 μF Permissible system leakage capacitance Ce Measuring circuit Measuring voltage Um Measuring current Im (at RF = 0 Ω) Internal DC resistance Ri Impedance Zi at 50 Hz Permissible...

Rated insulation voltage Rated impulse voltage/pollution degree Screw fixing Open the front plate cover in di- Note: Pull out the mounting clip for screw mounting. rection of arrow! Supply voltage Supply voltage US Power consumption Environment/EMC EMC IEC 61326 Operating temperature -10…+55 °C Classification of climatic conditions acc. to IEC 60721: Stationary use (IEC 60721-3-3) 3K5 (except condensation and formation of ice) Transport (IEC 69721-3-2) 2K3 (except condensation and formation of ice) Long-term storage (IEC 60721-3-1) 1K4 (except condensation and formation of ice) Classification...