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DC System Insulation Monitoring Technology Based on Unbalance and Balance Bridge
he yu-rei1; xu zi-gang2; zhao jun3; zheng li4(1.hubei province xiaogan power supply company communications station; xiaogan 432100; china; 2.north china electric power university; baoding 071003; china; 3.beijing jingneng thermal power co.; ltd.; beijing 100041; china; 4.beijing huaxing-hengye electric equipment co.; ltd.; beijing 100076; china)
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