Nanhong Electric NR-631 Microcomputer Incoming Line Protection Device

The NR-630 Microcomputer Protection and Control Device is suitable for small current grounding systems with voltage levels of 66kV and below. Based on a universal design concept, this product features reasonable functional configuration and can be used for general protection of incoming lines, outgoing lines, plant transformers, motors, and capacitors.

Instantaneous Overcurrent Protection

**Instantaneous Protection

Overcurrent Protection

Overload Alarm

Zero-Sequence Overcurrent Protection

Negative-Sequence Overcurrent Protection

Charging Protection

Overvoltage Protection

Undervoltage Protection

Zero-Sequence Overvoltage Protection

Voltage Reverse Phase Sequence Protection;

Underfrequency Protection

Reclosing

Non-Electrical Protection

Insulation Monitoring

TV Break Self-Check

TA Break Self-Check

Control Circuit Self-Check

Device Fault Self-Check

Electrical Measurement (Telemetry)

Switch Status Acquisition (Teleindication)

Output Status (Remote Control)

Control Box

Fault Recording Function

Communication Function

Ambient Temperature: -10 to +55°C

Relative Humidity: Not exceeding 95%, no condensation

Atmospheric Pressure: 80 to 110 kPa

Other Conditions: The air around the device should not contain acidic or alkaline substances, and should have lightning, rain, and snow protection facilities

Standard Atmospheric Conditions for Testing:

Ambient Temperature: +15 to +35°C

Relative Humidity: 45% to 75%

Atmospheric Pressure: 86 to 106 kPa

Storage and Transportation: -25 to +70°C