LINETRAXX® NGRM500

The NGRM500 is only intended for use in high-resistance grounded systems. In these systems, the NGRM500 monitors:

  • the current through the neutral-grounding resistor (NGR),
  • the voltage between the star point of the transformer and earth (voltage drop across the NGR),
  • the condition of the NGR.

In order to meet the requirements of applicable standards, customised parameter settings must be made on the device to configure it for local equipment and operating conditions.

LINETRAXX® NGRM500
LINETRAXX® NGRM500

The NGRM500 is only intended for use in high-resistance grounded systems. In these systems, the NGRM500 monitors:

  • the current through the neutral-grounding resistor (NGR),
  • the voltage between the star point of the transformer and earth (voltage drop across the NGR),
  • the condition of the NGR.

In order to meet the requirements of applicable standards, customised parameter settings must be made on the device to configure it for local equipment and operating conditions.

Kenmerken

  • Determination of RNGR with passive and active measurement methods
  • Continuous monitoring of the RNGR even if the installation is de-energised;
  • Alarm or trip on ground fault
  • Monitoring of the current INGR
  • Monitoring of the voltage UNGR
  • Ethernet communication
  • Web server
  • Language selection (German, English GB and US, Spanish, French)
  • Test button (internal, external) with/without tripping
  • FFT analysis of the measuring signals
  • Pulser for manual ground fault location
  • Relay for detection of ground faults and resistor faults
  • Relay for shutdown of the installation after a configurable time
  • Can be combined with RCMS… for automatic shutdown of feeders
  • Graphical user interface
  • Wide supply voltage range
  • Range of use up to 2000 m AMSL
  • Fault/History memory
  • Analogue output of measured values (0…10 V, 4…20 mA, etc., selectable parameters)
  • Password protection
  • Tripping on RMS, fundamental component signal or harmonics
  • Detection of AC and DC ground faults

LINETRAXX® NGRM500 Variant(en)

TypeSupply voltage U/ Frequency range HzArt. No.
NGRM500AC 48…240 V, 40…70 Hz
DC 48…240 V
B94013500

Optionele accessoires voor LINETRAXX® NGRM500

CD-series coupling device

TypeVoltage UsysArt. No.
CD1000400…690 VB98039010
CD1000-2400…1000 VB98039053
CD50001000…4200 VB98039011
CD144004300…14550 VB98039054
CD2500014551…25000 VB98039055

Measuring current transformer

TypeVoltage/CurrentArt. No.
W20AC up to 10 AB98080003
W35
W60
W0-S20
W1-S35
W2-S70
AC up to 25 AB98080010
B98080018
B911787
B911731
B911732
CTUB103-CTBC35AC/DC up to 10 AB78120030
CTUB103-CTBC60
CTUB103-CTBC120
AC/DC up to 25 AB78120031
B78120032

Voltage supply for measuring current transformers CTUB103…

Typemax. connected measuring current transformersArt. No.
STEP-PS/1 AC/24 DC/0.52B94053110
STEP-PS/1 AC/24 DC/1.757B94053111
STEP-PS/1 AC/24 DC/4.217B94053112

Downloads voor LINETRAXX® NGRM500

TypeNaamMaatTaalTijdstempelD-/B-Nummer
Flyers NGR Product Comparison 630.6 KB EN2022/07/18 16:05:0218.07.2022 16:05:02
CE Conformiteitsverklaringen NGRM 88.5 KB 2023/05/03 09:41:4903.05.2023 09:41:49
Handboeken NGRM…-Modbus 453.9 KB DE2022/06/09 10:45:4109.06.2022 10:45:41D00292
Handboeken NGRM…-Modbus 443.2 KB EN2022/06/09 10:47:4409.06.2022 10:47:44D00292
Technische informatie How to Size an NGR (US) 424.0 KB EN2019/05/13 10:31:3513.05.2019 10:31:35
Gegevensbladen NGRM500/NGRM550 1.2 MB DE2023/03/16 11:55:3216.03.2023 11:55:32D00373
Beknopte handleidingen NGRM500/NGRM550 1.2 MB DE2022/12/02 11:08:2702.12.2022 11:08:27D00373
Beknopte handleidingen NGRM500/NGRM550 1.5 MB EN2022/12/02 11:08:2802.12.2022 11:08:28D00373
Handboeken NGRM500/NGRM550 5.5 MB DE2022/12/02 11:07:2702.12.2022 11:07:27D00373
Handboeken NGRM500/NGRM550 5.4 MB EN2022/12/02 11:07:5302.12.2022 11:07:53D00373
Gegevensbladen NGRM500/NGRM550 1.2 MB FR2023/03/16 11:57:4116.03.2023 11:57:41D00373
Technische informatie NGRM500 Guideform Specification (US) 141.3 KB EN2020/04/30 18:55:2730.04.2020 18:55:27
Technische informatie NGRM500 Guideform Specifications 158.7 KB ES2020/05/22 13:33:1222.05.2020 13:33:12
Handboeken NGRM…-Modbus 463.4 KB ES2022/06/09 10:49:2509.06.2022 10:49:25D00292
Technische informatie NGR Checklist (US) 245.3 KB EN2022/11/07 16:39:0207.11.2022 16:39:02
Technische informatie Guideline on NGR/Safety Ground Monitoring 234.7 KB EN2019/09/20 13:52:3320.09.2019 13:52:33
Technische informatie NGRM500 Retrofit Guide (US) 1.3 MB EN2021/02/10 20:59:2210.02.2021 20:59:22
Technische informatie How to size an NGR (ES) 426.7 KB ES2021/05/26 11:31:0926.05.2021 11:31:09
Technische informatie Guideline on NGRM Relay Testing 522.3 KB EN2021/10/26 18:41:5226.10.2021 18:41:52
Productbrochures HRG & LRG Systems (US) 5.2 MB EN2020/03/05 21:02:3305.03.2020 21:02:33
Flyers Neutral Grounding Resistor Monitors (US) 343.7 KB EN2020/03/23 17:32:0023.03.2020 17:32:00
Productbrochures Mining 11.7 MB ES2020/05/22 14:37:3122.05.2020 14:37:31
Gegevensbladen NGRM500/NGRM550 1.2 MB EN2023/03/16 11:56:2516.03.2023 11:56:25D00373
Flyers NGRM550 & NGRM750 630.6 KB EN2022/05/25 06:07:5225.05.2022 06:07:52