ABB REF615 Under-Voltage Function Block 27

[hbenafan]

Hello,

ABB REF615 Under-voltage Block Phase voltages input not active when inserted in relay configuration page.

BLOCK input is the only input available.

How can I make V_A_AB, V_B_BC, and V_C_CA input available in function block 27? I need use voltage measurement inputs for under-voltage trip.

 

[RRaghunath]

Refer Application Guide for REF615. This guide has Standard configurations section wherein, various possible connections are shown.
You should find a clear answer to your query.
The document is freely downloadable from ABB website.

 

[Mouse86]

In ABB 615 and 620 series protection relays voltages and currents are internaly routed to protection function blocks. You can see those internal routings in application manual.

 

[hbenafan]

Thank you both for the response. I appreciate it.