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the selection schemes of line protection relay

 

 

Serial number        

Name

 Model

Remarks
 01 Line protection measurement and control device 9671 homochronous inlet,return feeder without check 
 02 Line protection measurement and control device 9671A homochronous inlet,return feeder with check
 03 Integrated circuit protection measuring and controlling device 9671C The line protection with differential,without check homochronous 
 04 Measurement and control device for line differential protection 9694 Pure differential protection for common line
 05 self-closing through circuit Protection measurement and control device 9635 Special for railway, after voltage regulator outlet
 06 Bus protection and measurement and control device 9679 Suitable for single bus 110KV and the following bus
 07 Line protection measurement and control device 9771 homochronous inlet,return feeder without check 
 08 Line protection measurement and control device 9771A homochronous inlet,return feeder with check
 09 Integrated circuit protection measuring and controlling device 9771C Line protection with differential,without check homochronous 
 10 Measurement and control device for line differential protection 9794 Pure differential protection for common line
 11 spare inlet source automatic switch measurement and control device 9758 Single bus, no segment, switching of main line
 12 Line distance protection measurement and control device 987S Four sections of the same distance/Four zero sequence distance
 13 Line distance protection measurement and control device 987SL Suitable for 35KV And the following lines of the same distance protection
 14 Bus protection and measurement and control device 9779 Suitable for single bus 110KV and the following bus

 

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