ABB RED650 - Summation Block 3 Phase 3 PHSUM; Functionality; Function Block; Signals

The outputs from the above configured SMAI block shall only be
used for Overfrequency protection (SAPTOF), Underfrequency
protection (SAPTUF) and Rate-of-change frequency protection
(SAPFRC) due to that all other information except frequency and
positive sequence voltage might be wrongly calculated.
21.9 Summation block 3 phase 3PHSUM
SEMOD55968-1 v2
21.9.1 Functionality
SEMOD55976-4 v4
Summation block 3 phase function 3PHSUM is used to get the sum of two sets of
three-phase analog signals (of the same type) for those IED functions that might
need it.
21.9.2 Function block
SEMOD54885-4 v3
3PHSUM
BLOCK
REVROT
^G1AI3P*
^G2AI3P*
AI3P
AI1
AI2
AI3
AI4
IEC05000441-3-en.vsdx
IEC05000441 V3 EN-US
Figure 372: 3PHSUM function block
21.9.3 Signals
SEMOD55989-1 v2
PID-6428-INPUTSIGNALS v3
Table 605: 3PHSUM Input signals
Name
Type Default Description
BLOCK BOOLEAN 0 Block
BLKGR1 BOOLEAN 0 Block input for group 1
BLKGR2 BOOLEAN 0 Block input for group 2
REVROT BOOLEAN 0 Reverse rotation
G1AI3P GROUP
SIGNAL
- Group 1 three phase analog input from first SMAI
G2AI3P GROUP
SIGNAL
- Group 2 three phase analog input from second
SMAI
Section 21 1MRK 505 394-UEN A
Basic IED functions
804 Line differential protection RED650 2.2 IEC
Technical manual