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ISOMETER® IRDH275BM-7 with AGH675S-7…
- Insulation monitoring device for AC and DC IT systems
- Application for drives including medium voltage converters up to 15.5 kV
- In combination with AGH675S-7 and AGH675S- MV15
- History memory with real-time clock for storing alarm messages with date and time
- Galvanically isolated RS-485 interface for data exchange
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 of modern power supplies which often include rectifiers, converters, thyristor-controlled DC drives and directly connected DC components. Taking the system leakage capacitances into account, the IRDH275BM-7 automatically adapts itself to the existing system conditions in order to optimise the measuring time.