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HRG Series 3

HRG Series 3

  • A neutral-grounding resistor with pulsing function
  • NGR-failure detection
  • Multi-feeder ground-fault detection with locating feature
  • Second ground-fault protection with prioritized tripping
  • Line-voltage monitoring with NGRM700
  • Front-panel information and programming displays
  • Standard network communications
  • Floor-mount control cabinet with top or remote mounted NGR enclosure

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.

Features

  • A neutral-grounding resistor with pulsing function
  • NGR with seismic certification available
  • NGR-failure detection with NGRM series or RC48N NGR monitors
  • Multi-feeder ground-fault detection with locating feature
  • Second ground-fault protection
  • Line-voltage monitoring with NGRM700
  • Front-panel information and programming displays
  • Standard network communications
  • Floor-mount control cabinet with top– or remote-mounted NGR enclosure

Downloads for HRG Series 3

CategoryNameSizeLanguageTimestampD-/B-Number
Technical Information How to Size an NGR (US) 424.0 KB EN2019/05/13 10:31:3513.05.2019 10:31:35
Application Brochures System Grounding in the Americas, Australia, South Africa and Other Regions 576.7 KB EN2019/05/13 10:29:2213.05.2019 10:29:22
Datasheets HRG Series 3 - Selective Second Guide Form (US) 100.5 KB EN2021/07/30 12:53:3730.07.2021 12:53:37
Product Brochures HRG & LRG Systems (US) 5.2 MB EN2020/03/05 21:02:3305.03.2020 21:02:33
Technical Information NGR Checklist (US) 245.3 KB EN2022/11/07 16:39:0207.11.2022 16:39:02
Technical Information Guide de spécifications pour Bender Series 3 2.0 MB FR2021/07/30 12:52:3130.07.2021 12:52:31
Technical Information Guideline on NGRM Relay Testing 522.3 KB EN2021/10/26 18:41:5226.10.2021 18:41:52

HRG Series 3 Variants

For assistance with ordering please contact Industrial.Sales@Bender-us.com or call (610) 383-9200.