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Converter Station underground substation Calibration wika

Chinese Industry Standard: DL, DL/T, DLT -- 32(35kV-220KV urban underground substation design rules) DL/T 5216-2017: ... (± 200kV and below flexible DC converter station converter valve construction process guidelines) DL/T 5753-2017: ... (Relative dielectric loss and capacitance detector calibration specifications) DL/T 1787-2017: DL/T 1788-2017

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