Ground Generators Safely with Bender Monitoring Devices

Generator grounding plays a crucial role in maintaining the safety, reliability, and uptime of your electrical system, especially in medium-voltage and high-availability applications. At Bender, we simplify generator grounding with advanced solutions that reduce complexity while delivering unmatched performance. 

Bender recommends installing a Neutral Grounding Resistor Monitor (NGRM) on each resistor in your system. This approach reduces wiring complexity and enables dynamic control of grounding modes. 

Each NGRM can be configured to switch between: 

• Auto Mode: Actively monitors resistance to earth.
• Passive Monitoring Mode: Observes system conditions without influencing them.

By keeping one unit in Auto Mode at all times, you ensure continuous ground-fault monitoring, even as generators are added or removed. This setup avoids inconsistencies in resistance readings and protects your system against undetected faults. 

For most generator configurations, Bender recommends using an HRG series (HRG 1, HRG 2, or HRG 3). These solutions are specifically designed to: 

• Minimize arc flash hazards
• Enable fault detection without tripping
• Prevent system downtime during single ground faults

Historically, many medium-voltage generator systems have used Low-Resistance Grounding (LRG) or hybrid grounding. If converting to HRG is not feasible for your setup, Bender still offers monitoring devices and replacement parts compatible with existing LRG and hybrid systems.