
Microcomputer Protection Relay for Overcurrent, Differential, and Distance Protection in MV/LV
Power Quality Online Monitoring Device
Anti-Islanding Protection Device
Fault Isolation Device
Microcomputer Secondary Harmonic Suppression Device
Microcomputer Protection Device
Box-Type Transformer Measurement & Control Device (Three-in-One)
Box-Type Transformer Measurement & Control Device (Two-in-One)
Box-Type Transformer Measurement & Control Device (Measurement Only)
Panel Cutout Dimensions (mm):
100×176, 120×185, 157×188, 123×154, 124×167, 147×208, 148×7, 190×70, 230×178, 270×140
Overall Dimensions (mm):
135×176, 135×190, 150×220, 156×76, 160×196, 209×76, 307×141
Applicable Scenarios:
Suitable for 28-type distribution cabinets
Compatible with gas-insulated cabinets, ring network cabinets, solid cabinets, and environmentally friendly cabinets
Applicable to power distribution networks of various voltage levels
Suitable for industrial projects and high-precision applications
Compatible with photovoltaic (PV) grid-connected cabinets
Compatible with wind power grid-connected cabinets
Integrated with temperature, humidity, and instrument monitoring, suitable for gas-insulated, ring network, solid, and environmentally friendly cabinets
Microcomputer Protection Relay for Overcurrent, Differential, and Distance Protection in MV/LV Networks
Hengrong Electric Co., Ltd. offers advanced microcomputer protection relays designed for medium-voltage (MV) and low-voltage (LV) power systems, providing reliable protection and monitoring for modern electrical networks. These intelligent devices are engineered to deliver precise fault detection, fast response, and seamless integration with power distribution equipment, ensuring safety and operational stability.
Key Features of Hengrong Microcomputer Protection Relays:
Comprehensive Protection: Supports overcurrent, differential, and distance protection functions to safeguard transformers, feeders, and busbars.
Intelligent Monitoring: Continuous real-time monitoring of power system conditions allows for early detection of abnormal events and rapid fault isolation.
Flexible Application: Suitable for industrial, commercial, and utility environments, integrating easily into MV/LV distribution networks.
User-Friendly Operation: Advanced interfaces enable simple configuration, control, and communication with SCADA or control systems.
Reliable Performance: Built with robust components and tested to meet international safety and quality standards, ensuring long-term reliability.
Applications of Hengrong Microcomputer Protection Relays:
Protection of MV/LV transformers and distribution lines
Industrial and commercial power systems
Renewable energy integration, including PV and wind power systems
Critical and backup power distribution networks
Why Choose Hengrong Electric?
Hengrong’s microcomputer protection relays combine accuracy, reliability, and intelligent features to provide comprehensive protection for modern power networks. Designed for ease of use, flexibility, and compliance with international standards, our relays ensure your electrical systems operate safely and efficiently.
Learn More
Visit www.hengrong-electric.com to explore our range of microcomputer protection relays and discover reliable solutions for your MV/LV power systems.