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.
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.
For assistance with ordering please contact Industrial.Sales@Bender-us.com or call (610) 383-9200.
Type | |
---|---|
An audible alarm | |
A neutral-disconnect switch | |
Seismic rating |
Category | Name | Size | Language | Timestamp | D-/B-Number |
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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 |