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.
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.
Caratteristiche
- 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 Variante/i
| Type | Supply voltage US / Frequency range Hz | Art. No. |
|---|---|---|
| NGRM500 | AC 48…240 V, 40…70 Hz DC 48…240 V | B94013500 |
Accessori opzionali per LINETRAXX® NGRM500
CD-series coupling device
| Type | Voltage Usys | Art. No. |
|---|---|---|
| CD1000 | 400…690 V | B98039010 |
| CD1000-2 | 400…1000 V | B98039053 |
| CD5000 | 1000…4200 V | B98039011 |
| CD14400 | 4300…14550 V | B98039054 |
| CD25000 | 14551…25000 V | B98039055 |
Measuring current transformer
| Type | Voltage/Current | Art. No. |
|---|---|---|
| W20 | AC up to 10 A | B98080003 |
| W35 W60 W0-S20 W1-S35 W2-S70 | AC up to 25 A | B98080010 B98080018 B911787 B911731 B911732 |
| CTUB103-CTBC35 | AC/DC up to 10 A | B78120030 |
| CTUB103-CTBC60 CTUB103-CTBC120 | AC/DC up to 25 A | B78120031 B78120032 |
Voltage supply for measuring current transformers CTUB103…
| Type | max. connected measuring current transformers | Art. No. |
|---|---|---|
| STEP-PS/1 AC/24 DC/0.5 | 2 | B94053110 |
| STEP-PS/1 AC/24 DC/1.75 | 7 | B94053111 |
| STEP-PS/1 AC/24 DC/4.2 | 17 | B94053112 |
Download per LINETRAXX® NGRM500
| Tipo | Nome | Dimensione | Lingua | Timestamp | D-/B-Numero |
|---|---|---|---|---|---|
| Dichiarazioni di conformità CE | NGRM | 83.0 KB | 2022/08/12 06:17:2512.08.2022 06:17:25 | ||
| Manuali di istruzioni | NGRM…-Modbus | 453.9 KB | DE | 2022/06/09 10:45:4109.06.2022 10:45:41 | D00292 |
| Manuali di istruzioni | NGRM…-Modbus | 443.2 KB | EN | 2022/06/09 10:47:4409.06.2022 10:47:44 | D00292 |
| Technical information | How to Size an NGR (US) | 424.0 KB | EN | 2019/05/13 10:31:3513.05.2019 10:31:35 | |
| Data sheet | NGRM500/NGRM550 | 1.2 MB | DE | 2023/03/16 11:55:3216.03.2023 11:55:32 | D00373 |
| Quickstarts | NGRM500/NGRM550 | 1.2 MB | DE | 2022/12/02 11:08:2702.12.2022 11:08:27 | D00373 |
| Quickstarts | NGRM500/NGRM550 | 1.5 MB | EN | 2022/12/02 11:08:2802.12.2022 11:08:28 | D00373 |
| Manuali di istruzioni | NGRM500/NGRM550 | 5.5 MB | DE | 2022/12/02 11:07:2702.12.2022 11:07:27 | D00373 |
| Manuali di istruzioni | NGRM500/NGRM550 | 5.4 MB | EN | 2022/12/02 11:07:5302.12.2022 11:07:53 | D00373 |
| Data sheet | NGRM500/NGRM550 | 1.2 MB | FR | 2023/03/16 11:57:4116.03.2023 11:57:41 | D00373 |
| Technical information | NGRM500 Guideform Specification (US) | 141.3 KB | EN | 2020/04/30 18:55:2730.04.2020 18:55:27 | |
| Technical information | NGRM500 Guideform Specifications | 158.7 KB | ES | 2020/05/22 13:33:1222.05.2020 13:33:12 | |
| Manuali di istruzioni | NGRM…-Modbus | 463.4 KB | ES | 2022/06/09 10:49:2509.06.2022 10:49:25 | D00292 |
| Technical information | NGR Checklist (US) | 245.3 KB | EN | 2022/11/07 16:39:0207.11.2022 16:39:02 | |
| Technical information | Guideline on NGR/Safety Ground Monitoring | 234.7 KB | EN | 2019/09/20 13:52:3320.09.2019 13:52:33 | |
| Technical information | NGRM500 Retrofit Guide (US) | 1.3 MB | EN | 2021/02/10 20:59:2210.02.2021 20:59:22 | |
| Technical information | How to size an NGR (ES) | 426.7 KB | ES | 2021/05/26 11:31:0926.05.2021 11:31:09 | |
| Technical information | Guideline on NGRM Relay Testing | 522.3 KB | EN | 2021/10/26 18:41:5226.10.2021 18:41:52 | |
| Depliant prodotto | HRG & LRG Systems (US) | 5.2 MB | EN | 2020/03/05 21:02:3305.03.2020 21:02:33 | |
| Flyer | Neutral Grounding Resistor Monitors (US) | 343.7 KB | EN | 2020/03/23 17:32:0023.03.2020 17:32:00 | |
| Depliant prodotto | Mining | 11.7 MB | ES | 2020/05/22 14:37:3122.05.2020 14:37:31 | |
| Data sheet | NGRM500/NGRM550 | 1.2 MB | EN | 2023/03/16 11:56:2516.03.2023 11:56:25 | D00373 |
| Flyer | NGRM550 & NGRM750 | 630.6 KB | EN | 2022/05/25 06:07:5225.05.2022 06:07:52 |