Recently, the domestically produced integrated protection and monitoring device for the traction power supply system of electrified railways, jointly developed by Chengdu Jiaoda XUJI Electric Co.,Ltd and XJ Software Technology Corporaiton, both are subsidiaries of XJ Electric, has successfully passed the appraisal by the Relay Protection and Automation Equipment Branch of the China Electrical Equipment Industry Association. Its overall performance indicators have reached the world-leading level, filling the domestic gap in the full domestic application of secondary equipment for railway traction power supply.

High Product Reliability: Both protection and monitoring products as well as process-level products adopt dual AD sampling, featuring memory data cross-checking, anti-interference design for core chips, and redundant verification mechanisms for protection outputs.

High Intelligence: Enables fault location under complex topologies; automatically identifies abnormal or missing fault location data and completes missing data; fault location error ≤ 300 meters.

Fast fault response: Fast Fault Response: The jitter of the sampling value message interval sent by the merging unit is less than 5μs; the tripping delay of the intelligent terminal is no more than 5ms.

Fully Independent and Controllable: The independently controllable relay protection device achieves full localization of core hardware and software.

The product has been successfully applied in China Railway Kunming Bureau with excellent performance.