BHRG Series 1 are the simplest of Bender’s series of high resistance grounding systems. They integrate a neutral-grounding resistor (NGR) with optional pulsing function, NGR monitoring, and individual ground-fault detection for low-voltage power systems. NGR health is monitored 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, two ground-fault detection levels, NGR-short detection, phase-voltage monitoring (NGRM700), communications, and a graphical display.
When an NGR monitor is not used, Bender RCM420 or RCMA423 ground-fault monitors detect AC and mixed AC/DC faults through the NGR. 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.
Options include an audible alarm, a neutral-disconnect switch, and seismic rating.
|Technical Information||How to Size an NGR (US)||424.0 KB||EN||2019/05/13 10:31:3513.05.2019 10:31:35|
|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||Guideline on NGRM Relay Testing||522.3 KB||EN||2021/10/26 18:41:5226.10.2021 18:41:52|
|An audible alarm|
|A neutral-disconnect switch|
For assistance with ordering please contact Industrial.Sales@Bender-us.com or call (610) 383-9200.