8.1.12 Sequence voltage measurement VSMSQI (ANSI V1, V2, V0)
8.1.12.1 Identification
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Sequence voltage measurement VSMSQI U1, U2, U0 V1, V2, V0
8.1.12.2 Function block
Figure 814: Function block
8.1.12.3 Functionality
The sequence voltage measurement function VSMSQI provides limit value
supervision outputs (U2_HIGH_AL, U2_HIGH_WARN, U1_HIGH_AL, U1_HIGH_WARN,
U1_LOW_WRN, U1_LOW_AL, U0_HIGH_AL, U0_HIGH_WARN). Setting parameters
Ps Seq
V on delay time
,
Ps Seq V off delay time
,
Ng Seq V on delay time
,
Ng Seq V off delay
time
,
Zro Seq V on delay time
, and
Zro Seq V off delay time
are used for controlling
the activation and the deactivation of alarm and warning outputs.
Instantaneous sequence voltages in volt are available for application configurations
through outputs U2_INST, U1_INST and U0_INST.
8.1.12.4 Analog channel configuration
VSMSQI has one analog group input which must be properly configured.
Table 1421: Analog inputs
Input Description
U3P Three-phase voltages
See the preprocessing function blocks in this document for the possible
signal sources.
There are a few special conditions which must be noted with the configuration.
Measurement functions
1MRS759142 F
1476 REX640
Technical Manual
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