LINETRAXX® NGRM700
- Comprehensively configurable
- Designed for easy retrofit
- Multilingual user interface
- Can operate on systems 5000 m above sea level without derating
The NGRM700 is an advanced device that allows continuous NGR monitoring to provide all necessary information of the system grounding.
The NGRM700 monitors the resistance value of the Neutral Grounding Resistor (NGR) and the fault current flowing through the NGR in High Resistance Grounded (HRG) systems. The ideal relay to protect HRG systems and to provide a comprehensive overview. The relay can be connected to the supervision system or directly to the communication network.
The NGRM700 allows the user to meet local requirements.
- Features
- Accessories
- Ordering information
- Downloads
- 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
- Phase-to-ground fault indication (optional; up to 690 V direct coupling, otherwise via potential transformers)
- 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 (24 to 240 Vac/Vdc)
- Range of use up to 5000 m AMSL
- Fault/History memory
- Analogue output of measured values (0…10 V, 4…20 mA, etc., selectable parameters)
- Detachable HMI for door mounting
- Password protection
- Tripping on RMS, fundamental component signal or harmonics
- Detection of AC and DC ground faults
Optional accessories for LINETRAXX® NGRM700
CD-series coupling device
Measuring current transformer
Voltage supply for measuring current transformers CTUB103…
| Voltage Usys | Type | Art. No. |
|---|---|---|
| 400…690 V | CD1000 | B98039010 |
| 400…1000 V | CD1000-2 | B98039053 |
| 1000…4200 V | CD5000 | B98039011 |
| 4300…14550 V | CD14400 | B98039054 |
| 14551…25000 V | CD25000 | B98039055 |
Measuring current transformer
| Voltage/Current | Type | Art. No. |
|---|---|---|
| AC up to 10 A | W20 | B98080003 |
| AC up to 25 A | W35 W60 W0-S20 W1-S35 W2-S70 | B98080010 B98080018 B911787 B911731 B911732 |
| AC/DC up to 10 A | CTUB103-CTBC35 | B78120030 |
| AC/DC up to 25 A | CTUB103-CTBC60 CTUB103-CTBC120 | 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 |
Variants of LINETRAXX® NGRM700
| Type | Supply voltage US/Frequency range Hz | Art. No. |
|---|---|---|
| NGRM700 | AC 24…240 V, 40…70 Hz DC 24…240 V | B94013700 |
| Accessory for FP200-NGRM: Transparent front cover 144x72 (for IP65)* | B98060005 |
*When using the "transparent front cover 144x72 (IP 65)" the cutout in the switchboard cabinet must be extended in height from 66 mm to 68 mm (+0.7/-0 mm).
The degree of protection IP65 applies only to the user interface FP200-NGRM when using the front cover. The degree of protection for the complete device is still IP30.
The degree of protection IP65 applies only to the user interface FP200-NGRM when using the front cover. The degree of protection for the complete device is still IP30.
Downloads for LINETRAXX® NGRM700
| Category | Product | Language | Size | Download |
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