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Trusted by engineers worldwide, RelayTestOnline delivers high-accuracy, portable, and intelligent relay test sets designed for substation protection, circuit breaker simulation, and comprehensive secondary injection testing.
Founded in 2015, Beijing Relay Test Co., Ltd. is a leading manufacturer and exporter of intelligent relay testing equipment. With over 3,000 square meters of production space and four advanced manufacturing bases across China, we specialize in R&D, production, and global distribution of high-precision relay test systems.
Our products are exported to Europe, America, Asia, and beyond, serving utility companies, power stations, and industrial facilities with reliable, CE and ISO9001-certified testing solutions. We are committed to quality, innovation, integrity, and long-term partnerships.
Discover our range of high-precision, portable, and intelligent relay test systems designed for protection relay calibration, secondary injection, and comprehensive power system testing.
Notebook computer-controlled comprehensive protection relay tester with high-precision six-phase output.
Portable three-phase protection relay tester with distance protection function.
Integrated test circuit breaker simulator for power system protection groups.
Compact, ultra-portable device for on-site protection relay diagnostics.
High-accuracy calibrator for SF6 gas density relays in high-voltage switchgear.
Specialized test system for transformer and generator differential protection relays.
China's leading electrical equipment supplier's flagship portable testing solution.
Industrial-grade latching relay for protection systems requiring high current switching.
We combine cutting-edge technology, rigorous quality control, and global support to deliver the most reliable relay testing solutions.
CE, ISO9001, and ISO13485 certified manufacturing processes ensure reliability and compliance.
Advanced digital signal processing and calibration ensure ±0.05% accuracy across all models.
Proven track record in foreign trade with shipments to Europe, North America, and Asia.
Dedicated support team offering technical assistance, calibration, and repair services.
Get answers to the most common inquiries about our relay testing equipment.
Our test sets are designed for comprehensive evaluation of all major protection relay types including overcurrent, distance, differential, directional, frequency, voltage, and motor protection relays. The WXJB series supports advanced testing of digital and numerical relays.
Yes, many of our models like the WXJB-902 and KVTester series are specifically designed for field applications. They feature rugged enclosures, battery operation options, and portable form factors while maintaining laboratory-grade accuracy.
Absolutely. Our advanced testers come with professional software that enables automated test sequences, result logging, report generation, and integration with SCADA systems. Custom scripting is also supported for specialized applications.
Our high-end six-phase testers like the WXJB-1600 offer ±0.05% basic accuracy for both current and voltage outputs, with precise phase angle control (±0.05°). All units undergo rigorous factory calibration and can be recalibrated on-site.
Yes, we specialize in customized solutions. Whether you need specific current/voltage ranges, additional I/O channels, specialized software features, or integration with existing systems, our engineering team can develop a tailored solution.
Have questions about our relay testing solutions? Need a quote or technical specification? Contact us today.
For product inquiries, technical support, or custom solutions, please visit our official website to connect with our team.
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