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Selection schemes of generator protection device

 

Site requirements model  name Connection mode Generator capacity Generator type
A differential 998 Generator differential protection measuring control device Y/Y 1000KW and above capacity  High voltage generator
A backup 988 Generator backup protection measuring control device
A ground floor 989 Generator grounding protection measuring control device
A differential 999 Measurement and control device for differential protection of generator transformer group

Y/△

 


1000KW and above capacity

 
High pressure generator 
A backup 981 Main transformer high backup protection measuring control device
A ground floor 989 Generator grounding protection measuring control device
A differential 989 Measurement and control device for differential protection of generator transformer group
Y/Y/△


10000KVA below capacity

 
High pressure generator
A backup 981 Main transformer high backup protection measurement and control device
Two sets of grounding 989 Generator grounding protection measuring control device
A comprehensive 988C Integrated protection and control device for generator With differential, backup With differential, backup Small capacity generator 
A backup 988D Generator backup protection measuring control device Not on the differential

10000KVA below capacity

Low voltage generator 

 

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