ABB RELION REX640 Technical Manual page 1476

Measurement functions
8.1.12 Sequence voltage measurement VSMSQI (ANSI V1, V2, V0)
8.1.12.1 Identification
Function description
Sequence voltage measurement
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
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
U3P
There are a few special conditions which must be noted with the configuration.
1476
See the preprocessing function blocks in this document for the possible
signal sources.
IEC 61850 IEC 60617
identification identification
VSMSQI U1, U2, U0
Description
Three-phase voltages
1MRS759142 F
ANSI/IEEE C37.2
device number
V1, V2, V0
Ps Seq
REX640
Technical Manual