What is a Neutral Grounding Resistor?
Neutral Grounding Resistors (NGR) limit fault currents in generator systems and increase safety and protect equipment by connecting the neutral point to ground. They are adjustable for different voltage and fault current requirements.
Key Benefits
- Limits fault currents to safe levels
- Adjustable ohmic values based on fault current
- Rugged design for indoor and outdoor use
- IP00 to IP65 enclosure options
- Supports natural or forced cooling
Operating Data
| Network Voltage | ۱ kV – ۵۲ kV | Rated Frequency | ۵۰ / ۶۰ Hz |
| Fault Current | Up to 3000 A | Ohmic Value at 25°C | According to Fault Current |
| Rated Operation Duration | ۱۰ sec or on demand | Ambient Temperature | ≤ 55°C |
| BIL | According to the rated NGR Voltage | ||
Standard Compliance
| Standard | IEEE 32 |
Safety and Protection
| Protection Degree | IP00 – IP65 | Cooling | Natural / Forced Ventilation |
| Installation | Indoor or Outdoor |
Design
| Input | Bushing or Cable from Bottom, Side or Top | Output | Bushing or Cable (according to demand) from Bottom, Side or Top |
| Accessories | Current Transformer, Voltage Transformer, Disconnector | Enclosure | Hot Dip Galvanized Steel Sheet / Painted Galvanized Steel Sheet |
