Device combination for insulation monitoring in unearthed AC, AC/DC and DC power systems (IT systems)

Device combination for insulation monitoring in unearthed AC, AC/DC and DC power systems (IT systems) ISOMETER® IRDH275BM-7 with coupling device AGH675-7 and AGH675-7MV15 Product description Device features • Insulation monitoring for drives including medium voltage converters up to 15.5 kV • Two separately adjustable response values 100 kfi...10 Mfi • AMPPlus measurement method (European patent: EP 0 654 673 B1) • Automatic adaptation to the system leakage capacitance • Info button to display device settings and the system leakage capacitance • History memory with real-time clock to store alarm...

AC/DC 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 - Two-line display for standard and menu mode 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 insulation fault, first warning level reached. insulation fault, second warning level reached. 8 - System fault LED lights: IRDH275...

Wiring diagram - mains connection/example for UL and CSA applications, it is mandatory to use 5 A fuses. 2,3 - Terminals L1, L2 are not connected! 4 - Connection to the coupling device AGH675S-7 or the two Connect terminal AK to terminal(s) 5 of the coupling device AGH675S-7 (or the two coupling devices AGH675S-7MV15), Connection with standard low-voltage cable, maximum voltage at terminal 5: 200 V 6 - Separate connection of the terminals 3 and 4 of the 7 - External TEST button (NO contact) 8 - External RESET button (NC contact or wire jumper), when the terminals are open, the fault message will...

Technical data IRDH275BM-7 Insulation coordination acc. to IEC 60664-1 Rated voltage Rated impulse voltage/pollution degree Voltage ranges Nominal voltage range Un Supply voltage US (also see nameplate) Frequency range US Supply voltage US (also see nameplate) Power consumption Response values Response value Ran1 (Alarm 1) Response value Ran2 (Alarm 2) Relative percentage error 100…500 kΩ Relative percentage error 500 kΩ…10 MΩ Response time tan Hysteresis Measuring circuit Measuring voltage Um Measuring current Im (at RF = 0 Ω) Internal DC resistance Ri Internal impedance Zi, at 50 Hz Permissible...

Rated insulation voltage AGH675S-7MV15 Rated insulation voltage Type test: Voltage impulse test (basic insulation) AC voltage test (basic insulation) Partial discharge test Voltage impulse test (basic insulation) AC voltage test (basic insulation) Partial discharge test Routine test: Operating temperature (normal operation) - 10...+60 °C AC 7 2 k V Operating temperature (continuous operation with asymetrical earth fault - 10.+ 55 °C Classification of climatic conditions acc. to IEC 60721 AC 15.5 k V Stationary use (IEC 60721-3-3) 3K5 (no condensation, no formation of ice) Classification of mechanical...