ISOMETER® IRDH275BM-7 con 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 AMP^Plus 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.

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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 AMP^Plus 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.

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Caratteristiche

Insulation monitoring for drives including medium voltage converters up to 15.5 kV
Two separately adjustable response values 100 kΩ…10 MΩ
AMP^Plus 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 messages with date and time stamp
BMS interface (Bender Measuring Device Interface) for communication with other Bender devices (RS-485 electrically isolated)
Current output 0(4)…20mA (electrically isolated) analogously to the measured insulation value

Self monitoring with automatic alarm
Automatic self test, selectable
Connection for external kΩ indication
Test and reset button
Connection external test and reset button
Two separate alarm relays with two potential-free changeover contacts
N/O or N/C operation, selectable
Backlit two-line plain text display
Remote setting of specific parameters via Internet (option; COM465IP with at least Option C required)

Applicazioni

AC, DC or AC/DC medium voltage systems
AC/DC medium voltage systems with directly connected DC components, such as rectifiers, converters, and thyristor-controlled DC drives