Bender NGRM700 - Function; Device Features

Function
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NGRM7xx_D00292_07_M_XXEN/02.2022
3. Function
3.1 Device features
 Determination of R
NGR
with passive and active measurement methods
 Continuous monitoring of the R
NGR
even if the installation is de-energized;
 Alarm or trip on ground fault
 Monitoring of the current I
NGR
 Monitoring of the voltage U
NGR
 Faulted phase indication (optional; up to 690 V direct coupling, otherwise via poten-
tial transformers)
 Ethernet communication
 Web server
 Language selection (German, English GB and US, Spanish, French)
 Test button (internal, external) with/without tripping
 FFT analysis of neutral current and voltage
 Pulser control for manual ground fault location
 Relay outputs for detection of ground faults and resistor faults
 Relay output for shutdown of the installation after a configurable time
 Can be combined with RCMS… for automatic shutdown of feeders
 Graphical user interface
 Integrated wide-range power supply unit for operating the NGR monitor
(AC/DC 24…240 V)
 Range of use up to 5000 m AMSL
 Fault/History memory
 Analogue output of measured values (0…10 V, 4…20 mA, etc., selectable parameter)
 Detachable HMI for door mounting
 Password protection
 Tripping on RMS, fundamental component signal or harmonics
 Detection of AC and DC ground faults