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hgis hvdc converter transformer maintenance systems factory-sell-directly

Chinese National Standard: GB -- 107 for acceptance of construction quality of ±800KV and under HVDC converter substation: GB 50729-2012: GB 50730-2011 ... Code for construction and acceptance of converter transformer in converter station at ±800kV and below: GB 50776-2012 ... (GIS, HGIS, disconnector and surge arrester) GB 50836-2013: GB 50838-2012: Technical code for ...

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