ABB Relion 670 series, Technical Reference Manual

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If the above criteria becomes true for a time of tDelay , then respective RI output is
activated provided the BLOCK input is false, and the respective TRIP outputs is
activated for the time of
tHold provided the BLKTR and BLOCK input is false.
13.8.4.3 Function block
ANSI09000765-1-en.vsd
SCCVPTOC (51)
I3P*
BLOCK
BLKTR TRIP
RI
ANSI09000765 V1 EN
Figure 419: SCCVPTOC (51) function block
13.8.4.4 Input and output signals
Table 458: SCCVPTOC (51) Input signals
Name Type Default Description
I3P GROUP
SIGNAL
- Three phase to phase current samples group
BLOCK BOOLEAN 0 Block of function
BLKTR BOOLEAN 0 Block trip signals
Table 459: SCCVPTOC (51) Output signals
Name Type Description
TRIP BOOLEAN Common trip signal
RI BOOLEAN Common start signal
13.8.4.5 Setting parameters
Table 460: SCCVPTOC (51) Group settings (basic)
Name Values (Range) Unit Step Default Description
Operation Disabled
Enabled
- - Disabled Operation Off/On
IBase 1 - 99999 A 1 3000 Base setting for current in A
IPickup 0 - 100 %IB 1 20 Fixed threshold setting in % of IBase
tHold 0.000 - 60.000 s 0.001 0.500 Hold time for operate signals
1MRK505222-UUS C
Section 13
Scheme communication
841
Technical reference manual