Rockwill Electric Co., Ltd. has successfully passed the real-scenario single-phase-to-ground fault test conducted by the Wenzhou of China Electric Power Research Institute for its DA-F200-302 hood-type feeder terminal and integrated primary-secondary pole-mounted circuit breakers—ZW20-12/T630-20 and ZW68-12/T630-20—receiving an official qualified test report. This achievement marks Rockwill Electric as a leader in single-phase ground fault detection technology within distribution networks.
The DA-F200-302 hood-type feeder terminal, developed and manufactured by Rockwill Electric, accurately distinguishes between internal (in-zone) and external (out-of-zone) faults under various grounding conditions—including ungrounded neutral systems and those grounded via arc-suppression coils—even during metallic grounding, high-impedance grounding, or arcing faults. Upon detecting an in-zone fault, the terminal promptly sends a tripping signal to the circuit breaker to isolate the faulty section, ensuring safe and stable operation of the distribution system.
Looking ahead, Rockwill Electric will continue to pursue an innovation-driven development strategy, focusing on smart distribution Internet of Things (DIoT) solutions. Leveraging digital manufacturing and intelligent product design, the company is committed to delivering greater value to its customers through continuous R&D and technological advancement.
