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Sulfur Hexafluoride 66 kv gis switchgear ndir sensor Siemens

GB 20840.1-2010 PDF ...English - Chinese Standard 7674 rated voltage of 72.5kV and above the gas-insulated metal-enclosed switchgear (GB 7674-2008, IEC 62271- 203.2003, MOD) GB/T 8905 sulfur hexafluoride gas in electrical equipment management and testing guidelines (GB/T 8905-1996, neq IEC 60480. 1974)

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