the selection schemes of line protection relay
|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|
- Working principle and setting calculatio...
- Introduction of synchronous grid system ...
- The advantages and disadvantages of SCR ...
- What protection should the generator ins...
- Correct treatment of neutral line of sma...
- Several methods of motor phase failure p...
- How many grounding brushes should there ...