Bender Inc. Announces Latest Advancement in Power System Grounding Technology

March 11, 2020

Bender is proud to announce the latest technology that expands its existing line of Neutral Grounding Resistor Monitors – the NGRM500. The NGRM500 is a protective relay that offers industry-leading protection and provides increased safety on high-resistance-grounded transformers and generators. This new advancement in NGR technology follows the NGRM700 that was brought to market in 2017.

The NGRM500 detects neutral-grounding resistor (NGR) failure and ground faults by measuring the current through the NGR, the voltage between the system neutral and earth, NGR resistance, and its connection between the system neutral and earth. The NGR is monitored whether the power system is energized or offline and with or without the presence of a ground fault.

The device features an integrated web server, Modbus TCP/IP, and Modbus RTU, and an HMI (Human-Machine Interface) for local metering and easy programming.

Customer benefits of the NGRM500 include:

  •  –   Improved safety with monitoring of the grounding connection
  •  –   AC/DC ground-fault protection/detection to properly monitor non-linear loads, such as adjustable speed drives
  •  –   Preventative maintenance as a result of sensitive ground-current detection levels
  •  –   Simplified design – Controls pulsing contactor in pulsing HRG systems
  •  –   Compact DIN rail mount allows for easy installation in smaller control panels, removing the necessity of wiring to the panel door

Go HERE for more information.

Related Articles


Latest Articles

  • Celebrating 30 Years of Innovation and Collaboration at EFC’s 2025 Conference in Niagara

    Celebrating 30 Years of Innovation and Collaboration at EFC’s 2025 Conference in Niagara

    By Luc Rodier, Chair of the Board of Electro-Federation Canada (EFC) The 2025 EFC Conference in Niagara was a landmark occasion—marking 30 years of innovation, collaboration, and collective progress in the Canadian electrical industry. Set against the symbolic backdrop of the Canadian-U.S. border, this year’s theme, Electrifying Connections, couldn’t have been more fitting. As President and… Read More…

  • Industrial Wiring Devices: A Brief Intro and How to Choose Them

    Industrial Wiring Devices: A Brief Intro and How to Choose Them

    June 9, 2025 Introduction: With the multitude of options on the market, it can be difficult to decide whether you need a pin and sleeve wiring device or a plug and connector in your industrial plant or facility. You might find your head swirling with thoughts about which option is best. Or you may not… Read More…

  • Industry Leaders Head to Quebec to Strengthen Energy and Supply Chain Resilience

    Industry Leaders Head to Quebec to Strengthen Energy and Supply Chain Resilience

    June 9, 2025 By Electro-Federation Canada On June 3 and 4, a high-level delegation from Canada’s electrical and automation sector travelled to Montreal and Quebec City for a series of strategic meetings with Quebec government officials and key stakeholders. Organized by Electro-Federation Canada (EFC), this mission underscores the critical role the industry plays in advancing… Read More…

  • Electrifying Connections: A Celebration of Legacy, A Vision for the Future

    Electrifying Connections: A Celebration of Legacy, A Vision for the Future

    June 9, 2025 By Electro-Federation Canada This year’s Annual Industry Conference, held against the breathtaking backdrop of Niagara Falls, Ontario, was a landmark event with more than 710 Electro-Federation Canada community members. More than just a celebration of our shared history, it was a launchpad for new ideas, future-based dialogue, and deeper connections.   The energy and… Read More…


Changing Scene