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UHVDC underground substation On-Site Services enervac

China voltage Standards,GB standards,english version ...(Guidance on the implementation of on - site DC withstand voltage test for ± 800kV DC equipment) voltage China Electricity & Power Standards: DL/T 1648-2016 (Technical specification for high and low voltage crossing of auxiliary frequency converter of power plant and substation) voltage China Electricity & Power Standards: DL/T 1633-2016

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