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ISOMETER® IRDH275BM-7 with AGH675S-7/AGH675S-7MV15

ISOMETER® IRDH275BM-7 with AGH675S-7/AGH675S-7MV15
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ISOMETER® IRDH275BM-7 with AGH675S-7/AGH675S-7MV15 - 1

ISOMETER® IRDH275BM-7 with coupling device AGH675-7 and AGH675-7MV15 Device combination for insulation monitoring in unearthed AC, AC/DC and DC power systems (IT systems)

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ISOMETER® IRDH275BM-7 with AGH675S-7/AGH675S-7MV15 - 2

ISOMETER® IRDH275BM-7 with coupling device AGH675-7 and AGH675-7MV15 Device combination for insulation monitoring in unearthed AC, AC/DC and DC power systems (IT systems) Product description The device combination ISOMETER® IRDH275BM-7 and the coupling device AGH675S-7 or the coupling devices AGH675S-7MV15 is designed to monitor the insulation resistance of unearthed medium voltage systems (IT systems). It is suitable for universal use in 3AC, combined AC/DC and DC systems. AC systems may include extensive DC-supplied loads. The AMPPlus measurement method meets the particular requirements...

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ISOMETER® IRDH275BM-7 with AGH675S-7/AGH675S-7MV15 - 3

Operating elements 1 - INFO” button: to query standard information back (menu “ function), to confirm parameter change 2 - TEST” button: to call up the self test. “ Arrow up button: parameter change, to move up in the menu 3 - wo-line display for standard and menu mode T 4 - RESET” button: to delete stored insulation fault alarms parameter “ change, to move down in the menu 5 - MENU” button: to call up the menu system. “ Enter button: to confirm parameter change 6 - larm LED “1” lights: A insulation fault, first warning level reached. 7 - larm LED “2” lights: A insulation fault, second...

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ISOMETER® IRDH275BM-7 with AGH675S-7/AGH675S-7MV15 - 4

Wiring diagram – mains connection/example Connection AGH675S-7 1 - Supply voltage US (see ordering information) via 6 A fuse 2,3 - Terminals L1, L2 are not connected! 8 - External RESET button (NC contact or wire jumper), when the terminals are open, the fault message will not be stored 4 - Connection to the coupling device AGH675S-7 or the two coupling devices AGH675S-7MV15: 9 - STANDBY by means of the function input F1, F2: When the contact is closed, insulation measurement does not take place. Connect terminal AK to terminal(s) 5 of the coupling device AGH675S-7 (or the two coupling...

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ISOMETER® IRDH275BM-7 with AGH675S-7/AGH675S-7MV15 - 5

Technical data IRDH275BM-7 Insulation coordination acc. to IEC 60664-1 Rated voltage AC 800 V Rated impulse voltage/pollution degree 8 kV/3 Switching components Switching components 2 changeover contacts: K1 (Alarm 1), K2 (Alarm 2, system fault) Operating principle K1, K2 (Alarm 1, Alarm 2) Voltage ranges Nominal voltage range Un Supply voltage US (refer to nameplate for other values) Power consumption Response values Response value Ran1 (Alarm 1) Response value Ran2 (Alarm 2) Relative percentage error 100.. .500 kO Relative percentage error 500 kO.10 MO Response time...

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ISOMETER® IRDH275BM-7 with AGH675S-7/AGH675S-7MV15 - 6

AGH675S-7 Rated insulation voltage AGH675S-7MV15 Rated insulation voltage Voltage test acc. to DIN EN 61800-5-1 Type test: AGH675S-7 Voltage impulse test (basic insulation) AC voltage test (basic insulation) Partial discharge test AGH675S-7MV15 Voltage impulse test (basic insulation) AC voltage test (basic insulation) Partial discharge test Routine test: AC voltage test Voltage ranges AGH675S-7 Nominal system voltage Un Nominal frequency fn Internal DC resistance Ri AGH675S-7MV15 Nominal system voltage Un Nominal frequency fn Internal DC resistance Ri Operating temperature (normal...

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