English 
Our conventional relay test set series is developed based on years of industry experience and technological accumulation, catering to various needs of power system relay testing. Renowned for its precise testing performance, user-friendly interface, and comprehensive functionality, this series has earned the trust and praise of numerous users.
Throughout our company's over 20 years of development, we have continuously updated our relay test set series based on industry technological innovations and evolving customer needs. As a result, Kingsine have introduced innovative protection relay testing products that combine portability, compactness, modular design, and high precision with high output.
The evolution from Kingsine's traditional model, the K68i protection relay test set, to the new model, KFA310 protection relay tester, showcases a blend of technological advancement and design innovation.
The K68i, as a classic protection relay tester, has been widely recognized for its stable performance, multifunctional testing capabilities, and user-friendly interface. It supports various testing modes suitable for complex power system protection schemes.
On the other hand, the KFA310 represents a new breakthrough in portability, intelligence, and user experience. This revolutionary mini protection relay tester not only maintains high-performance testing capabilities but also significantly enhances on-site testing convenience and efficiency with its compact design, wireless connectivity, and intuitive touch screen interface. The launch of the KFA310 signifies Kingsine's ongoing commitment to meeting the growing testing needs and challenges of modern power systems.
To ensure our 3 years product warranty and our goal for 15 years of product life, KINGSINE now have implemented "Plug and Play" hardware design on Handheld Mini Protection Relay Tester KFA300 & Handheld Mini Protection Relay Tester KFA310 / Portable High Power Relay Test Set KF86P.
In this way, with the unique advanced technology KINGSINE brand relay testers can become smaller volume and lighter, but higher power burden. For after-sales maintenance, only module replacement is required, and there is no need for accuracy calibration after module replacement.
"Plug and Play" After-sales service advantages:
Simple structure, amateur can achieve independent assembly.
Reduced after-sales costs.
Shortened after-sales time.
Aim to complete the after-sales process within 20 working days.
