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The SHDFR_C Network Message Analysis & Failure Recording Device is a new-type integrated message analysis and fault recording device developed by Shenzhen Shuanghe Electric Co., Ltd. for digitalized substations. Modeled strictly on the IEC61850 standard and the relevant specifications and standards of the power grid companies, the device adopts the MMS communication mode at the station control layer and fully meets the IEC61850 consistency test requirements. With an imbedded hardware structure, it integrates transient state recording, steady state recording, network message recording, real-time operational monitoring, waveform analysis, and fault location. With its stable system and powerful functionality, it provides important support and guarantee for the safe and stable running of the power system.