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transformer protection schemes

 

Serialnumber

 model 

Name Applicable type
The Protection scheme of the 9600distribution transformer
1 9672 Transformer protection measurement and control device Distribution transformer
2 9672C Measuring and controlling device for comprehensive protection of transformer Large capacity distribution transformer
3 9695 Measuring and controlling device for transformer differential protection Large capacity distribution transformer differential
4 9633 Voltage regulator protection measurement and control device Special purpose of railway up regulation
The Protection scheme of the 9600 main transformer 
1 9691 Main transformer integrated protection measurement and control device Differential protection  + Main transformer low voltage side backup protection, Y/d1; Y/d11 please note;
2 9691D Main transformer integrated protection measurement and control device Differential protection + Main transformer low voltage side backup protection, △ /Y
3 9692 Main transformer differential protection measurement and control device Two winding differential, Y/d11; Y/d1 please explain
4 9693 Main transformer differential protection measurement and control device Three winding differential, Y/Y/d11; 
5 9693D Main transformer differential protection measurement and control device Three winding differential,Y/△/△
6 9681 Main transformer high backup protection measurement and control device Backup protection for main transformer high voltage side
7 9682 Main transformer backup protection measurement and control device Three turn medium voltage side backup protection
8 9683 Main transformer low backup protection measurement and control device Main transformer low voltage side backup protection
9 9684 Three phase operation box Main transformer backup operation box 
10 985 Main transformer non electric quantity protection device Large main transformer protection
11 980 Measurement and control device for main transformer with load and voltage regulation Large main transformer

 

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