BHRG Series 3 HRG systems integrate a neutral-grounding resistor (NGR) assembly with pulsing function and NGR monitoring; individual ground-fault detection for up to 60 circuits, with available second-fault protection (2GFP); and network communications. The system is scalable up to 120 circuits and 18 NGR’s with the addition of Remote units to a Central control unit. Monitoring, display, and control components are housed in a floor-mount enclosure—the NGR assembly mounts on the control cabinet or at another location.
NGR monitoring is with an RC48N Ground-Fault & NGR Monitor, an NGRM500 Neutral-Grounding-Resistor Monitor, or an NGRM700 Neutral-Grounding-Resistor Monitor. The former provides basic AC ground-fault and open-NGR detection. The NGRM series adds AC/DC ground-fault detection, harmonic analysis, NGR-short detection, phase-voltage monitoring (NGRM700), and a graphical display.
Bender RCMS460 or RCMS490 ground-fault monitors provide multiple-feeder monitoring to detect AC and DC faults in up to 12 circuits per device. The RCMS460 has common relay outputs; the RCMS490 adds dedicated relay outputs for each monitored channel (required for tripping systems and for 2GFP). Each BHRG Series 3 unit can be configured with up to four RCMS monitors-48 circuits.
2GFP Second-Ground-Fault Protection automatically de-energizes the lower-priority circuit on the occurrence of a second fault while keeping the higher-priority circuit energized. The Bender 2GFP system uses true-prioritization technology that does not reduce its high-speed-protection performance as fast as 80 ms.
In 2GFP models, front-panel metering is provided with a color touchscreen HMI. Non-2GFP models feature the NGRM700 NGR Monitor door-mounted HMI, where so equipped. All variants include front-panel pilot lights to indicate control-voltage presence and relay-alarm state, and may include switches for test, reset, and pulse-enable functions. Non-2GFP units with an RC48N NGR Monitor can be equipped with analog gauges for front-panel neutral-voltage and -current indication. Options include an audible alarm and a neutral-disconnect switch.
What is high resistance grounding? Read Here.
|Technical Information||How to Size an NGR (US)||424.0 KB||EN||2019/05/13 10:31:3513.05.2019 10:31:35|
|Application Brochures||System Grounding in the Americas, Australia, South Africa and Other Regions||576.7 KB||EN||2019/05/13 10:29:2213.05.2019 10:29:22|
|Datasheets||HRG Series 3 - Selective Second Guide Form (US)||100.5 KB||EN||2021/07/30 12:53:3730.07.2021 12:53:37|
|Product Brochures||HRG & LRG Systems (US)||5.2 MB||EN||2020/03/05 21:02:3305.03.2020 21:02:33|
|Technical Information||NGR Checklist (US)||245.3 KB||EN||2022/11/07 16:39:0207.11.2022 16:39:02|
|Technical Information||Guide de spécifications pour Bender Series 3||2.0 MB||FR||2021/07/30 12:52:3130.07.2021 12:52:31|
|Technical Information||Guideline on NGRM Relay Testing||522.3 KB||EN||2021/10/26 18:41:5226.10.2021 18:41:52|
For assistance with ordering please contact Industrial.Sales@Bender-us.com or call (610) 383-9200.