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Differential protection schemes

 

model Name  mode Applicable type
9694 line differential protection Measurement and control device   Y/Y Differential protection for feeder line of short line in power plant
9695 transformer differential protection Measuring and controlling device   Δ/Y Distribution transformer differential protection
9696 motor differential protection Measuring and controlling device Y/Y  Differential protection for large space motor
986 Bus differential protection measurement and control device Big difference/Small difference 35kV/110kV Busbar differential protection
9697 Optical fiber longitudinal differential protection measurement and control device Y/Y Line differential protection within 1-5 km
9691 Main transformer integrated protection measurement and control device Y/d11;Y/d1 Two turns, within operation
9692 Main transformer differential protection measurement and control device Y/d11;Y/d1 Two turns,without operation
9693 Main transformer differential protection measurement and control device Y/Y/d11 Three turns.without operation
9698 Generator differential protection measurement and control device Y/Y high-voltage generator
9699 Measurement and control device for differential protection of generator transformer group Y/Y;Y/△;Y/Y/△ Generator transformer unit
9671C Integrated circuit protection measuring and controlling device differential  ,backup Line differential protection + backup protection
9672C Measuring and controlling device for comprehensive protection of transformer Differential,backup Large capacity distribution transformer(Differential protection + backup protection)
9673C Integrated protection and control device for motor differential、backup 2000KW and above Motor(differential protection+Backup protection)

 

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