Table 1422: Special conditions
Condition Description
U3P connected to real measurements The function requires that any two voltage
channels are connected.
Improper analog channel configuration causes a validation error if the analog
channels are not completely configured or they do not match with certain settings.
For troubleshooting, check the contents of this chapter and also the preprocessing
blocks in this document. The configuration can be written to the protection relay
once the mismatch is corrected.
8.1.12.5 Signals
VSMSQI Input signals
Table 1423: VSMSQI Input signals
Name Type Default Description
U3P SIGNAL - Three-phase voltages
VSMSQI Output signals
Table 1424: VSMSQI Output signals
Name Type Description
U2_HIGH_AL BOOLEAN Negative sequence high
alarm
U2_HIGH_WARN BOOLEAN Negative sequence high
warning
U1_HIGH_AL BOOLEAN Positive sequence high alarm
U1_HIGH_WARN BOOLEAN Positive sequence high warn-
ing
U1_LOW_WARN BOOLEAN Positive sequence low warn-
ing
U1_LOW_AL BOOLEAN Positive sequence low alarm
U0_HIGH_AL BOOLEAN Zero sequence high alarm
U0_HIGH_WARN BOOLEAN Zero sequence high warning
U2_INST FLOAT32 Negative sequence voltage
amplitude, instantaneous val-
ue (kV)
Table continues on the next page
1MRS759142 F Measurement functions
REX640
Technical Manual
1477
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