Reliable Grid and System Protection with the New HRNF-200 Protection Relay

As renewable energy installations continue to expand, ensuring safe and reliable interaction with the public grid has become more important than ever. The new HRNF-200 Protection Relay is designed to provide comprehensive grid and system protection for distributed energy generation, helping safeguard both electrical equipment and maintenance personnel while ensuring compliance with national grid connection requirements. It is suitable for photovoltaic systems, battery energy storage systems (BESS), wind power plants, hydroelectric installations, and cogeneration units connected to low- and medium-voltage networks. By continuously monitoring critical electrical parameters, it automatically disconnects generating systems whenever grid conditions move outside the permitted operating range.

Comprehensive Monitoring for Maximum Safety

The HRNF-200 continuously supervises the electrical grid by monitoring:

Phase-to-phase and phase-to-neutral voltage
Overvoltage and undervoltage
Grid frequency, overfrequency, and underfrequency
Rate of change of frequency (ROCOF)
Phase shift
Zero-sequence voltage
10-minute average voltage

If any monitored value exceeds the configured limits, the relay disconnects the generating plant within milliseconds, helping prevent equipment damage and ensuring personnel safety during grid outages or disturbances.

Flexible Configuration for International Projects

The relay includes predefined parameter settings for multiple countries, allowing installers to quickly configure the device according to local grid requirements. Selecting the appropriate national standard automatically loads the corresponding protection parameters.

For projects requiring custom settings, the HRNF-200 also offers open configuration options. While threshold values can be adjusted beyond predefined standards where permitted, the device clearly indicates when these settings no longer comply with certified national requirements.

Designed for Versatile Installations

The HRNF-200 supports four different measuring and connection modes, making it suitable for a wide variety of electrical installations:

Single-phase, 2-wire connection
Three-phase without neutral, 3-wire connection
Three-phase phase-to-phase, 4-wire connection
Three-phase with neutral, 4-wire connection

Additional features include:

Configurable nominal voltage
Independent trip delays for each protection function
Fixed or random reconnection time
Five configurable digital inputs
Three changeover relay outputs
Password protection and sealing capability
Error memory with timestamp logging
LCD display for measured values and parameter settings

Engineered for Renewable Energy Applications

The HRNF-200 has been developed specifically for modern distributed power generation and renewable energy systems. It provides reliable protection for:

Photovoltaic installations
Battery energy storage systems (BESS)
Wind turbines
Hydroelectric power plants
Cogeneration systems

Its ability to monitor grid conditions while controlling the connection between generating plants and the public grid makes it a key component for ensuring safe and compliant operation.

Built for Compliance

The HRNF-200 complies with a wide range of protection relay standards and supports important grid connection regulations, including EN 50549-1 and EN 50549-2, making it suitable for use across numerous international markets.

Key Features

Comprehensive grid and system protection
Suitable for PV, BESS, wind, hydro, and cogeneration systems
Voltage, frequency, and phase monitoring
Predefined country-specific protection settings
Flexible configuration for custom applications
Four measuring and connection modes
LCD display with live measurements and parameters
Event memory with timestamp logging
Three relay outputs and five digital inputs
Designed for low- and medium-voltage grid applications