Table of Contents
4
IRDH575_D00089_05_M_XXEN/01.2020
3.5.5 Function input F1/F2 for connection or disconnection of IT systems
being monitored ........................................................................................... 22
3.5.6 ISOnet function for central control of the insulation monitoring
process when several IRDH575 are interconnected in IT systems ....
24
3.5.7 Self test .............................................................................................................. 26
3.5.8 Relay K3: device fault alarm and EDS common message ............... 28
4. Connection ..................................................................................................... 29
5. Commissioning flow chart ........................................................................... 33
5.1 Commissioning of the ISOMETER® function range (1) ..................... 33
5.2 Commissioning of the insulation fault location function (EDS) (1) ...
35
6. Operation and setting .................................................................................. 38
6.1 Operating features and displays IRDH575 ........................................... 38
6.1.1 Display in case of active EDS and detected fault ............................... 40
6.1.2 Display in the menu mode ......................................................................... 41
6.1.3 Function keys .................................................................................................. 41
6.2 Menu structure and menu mode ............................................................ 44
6.2.1 Diagram menu structure ............................................................................ 46
6.3 HISTORY INFO menu .................................................................................... 48
6.3.1 Diagram HISTORY INFO ............................................................................... 49
6.4 ISO SETUP menu: Setting of the basic ISOMETER® functions ........ 50
6.4.1 Response values Alarm 1 and Alarm 2 ................................................... 50
6.4.2 Starting the EDS system via the response values ALARM 1 and
ALARM 2 ........................................................................................................... 50
6.4.3 Operating principle of the alarm relays ................................................ 51
6.4.4 Memory setting (on/off) .............................................................................. 53
6.4.5 Current output for external measuring instruments ........................ 54
6.5 ISO ADVANCED menu: Setting of the extended functions ............ 55
6.5.1 External coupling device (AGH: no = factory setting) ..................... 55
6.5.2 Selecting the system leakage capacitance range .............................. 55
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