ABB Network Partner AB
Page I
Contents Page
Application..............................................................................................2-1
General...................................................................................................2-1
REC 561 types...............................................................................2-2
Application examples .....................................................................2-2
Basic features.........................................................................................2-8
Apparatus control ...........................................................................2-8
Interlocking.....................................................................................2-8
Time tagged events........................................................................2-9
Configurable logic...........................................................................2-9
Remote serial communication - LON .............................................2-9
Optional features..................................................................................2-10
Additional apparatus control.........................................................2-10
Additional interlocking ..................................................................2-10
Measurements..............................................................................2-10
Pulse counter ...............................................................................2-11
Synchronism and energizing check..............................................2-11
Fuse failure supervision ...............................................................2-11
Multibreaker autoreclosing ...........................................................2-11
Breaker-failure protection.............................................................2-12
Loss-of-power system voltage......................................................2-12
Disturbance recorder....................................................................2-12
Remote serial communication - SPA............................................2-12
Input/output facilities.....................................................................2-13
Ordering................................................................................................2-15
General.................................................................................................2-19
Requirements on voltage instrument transformers...............................2-19
Requirements on current instrument transformers...............................2-19
Choice of current transformers..................................................... 2-19
Conditions for the CT requirements .............................................2-19
Fault current .................................................................................2-20
REC 561 current transformer requirements .................................2-20
Requirements for the LON communication link
for remote communication....................................................................2-21
Requirements for the SPA communication link
for remote communication....................................................................2-21
Technical data......................................................................................2-22
Hardware design ..................................................................................2-27
Hardware modules ...............................................................................2-28
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