Which domestic manufacturer makes relay protection testers

PONOVO, Wuhan Fulude Power Equipment, and Wuhan Longdian Electrical Equipment are leading domestic manufacturers of relay protection testers in China.

Key Domestic Manufacturers

1. PONOVO PONOVO is recognized as the first protection relay test set manufacturer in China, with over 20 years of experience supplying more than 20,000 relay test kits domestically and internationally . Their product range includes:

• 6-phase, 3-phase, and single-phase relay test sets
• Testing for electromagnetic, solid-state, numerical, microcomputer, and IEC61850 digital relays
• Advanced models like PW636i-F and PW366Ai, which support both conventional and IEC61850 testing
• L336EXi series portable digital protection relay testers PONOVO also provides PowerTest Int V7.0 software for universal testing across multiple models. 2. Wuhan Fulude Power Equipment Engineering Co., Ltd. Located in Wuhan, Hubei Province, Fulude specializes in relay protection testers, grounding resistance testers, and electric energy meter testers . Their offerings include:
• High-precision relay protection testers for industrial and substation applications
• Equipment for installation, maintenance, and testing of power facilities
• Comprehensive technical support and R&D services 3. Wuhan Longdian Electrical Equipment Co., Ltd. Also based in Wuhan, Longdian manufactures relay protection testers, transformer testers, and oil analyzers . Their products are designed for:
• Installation, renovation, and testing of power transmission and distribution equipment
• High-accuracy relay testing for both conventional and digital relays
• Integration with advanced power electronic devices and automation systems

Product Capabilities

Domestic manufacturers like PONOVO, Fulude, and Longdian provide relay testers capable of:

• Simulating fault conditions for overcurrent, distance, and differential protection
• Testing all relay generations, from electromechanical to microprocessor-based relays
• Performing automated test sequences, dual injection, and real-time dynamic simulations
• Generating detailed technical reports for commissioning, maintenance, and verification purposes These manufacturers ensure that relay protection testers meet industry standards and are suitable for substations, industrial power systems, and research applications.

Summary

For domestic sourcing of relay protection testers in China, PONOVO, Wuhan Fulude Power Equipment, and Wuhan Longdian Electrical Equipment are the most prominent manufacturers. They offer a wide range of products, from portable digital testers to advanced IEC61850-compatible systems, with strong technical support and software integration for precise and reliable relay testing .