ABB REU 610 Technical Reference Manual page 42

REU 610
42
Voltage Relay
Technical Reference Manual - ANSI Version
The matrix below can be of help when making the wanted selections. The
pickup, trip and alarm signals from the protection elements and the external
trip signal are combined with the output contacts by encircling the wanted
intersection point. Each intersection point is marked with a switch number,
and the corresponding weighting factor of the switch is shown to the right in
the matrix. The switchgroup checksum is obtained by vertically adding the
weighting factors of all the selected switches of the switchgroup.
The trip lockout signal is always routed to PO3.
The trip signal from CBFAIL is always routed to PO2.
The external fault warning is always routed to SO2.
1MRS755972