Sequence Current Measurement Csmsqi - ABB RELION REX640 Technical Manual

Section 8
Measurement functions
8.1.10
8.1.10.1
8.1.10.2
8.1.10.3
8.1.10.4
1318

Sequence current measurement CSMSQI

Identification
Function description
Sequence current measurement
Function block
GUID-6D43E6F2-F8EB-4A37-A15B-F9E67E549179 V1 EN
Figure 709: Function block
Functionality
The sequence current measurement function CSMSQI provides limit value
supervision outputs (I2_HIGH_AL, I2_HIGH_WARN, I1_HIGH_AL,
I1_HIGH_WARN, I1_LOW_WRN, I1_LOW_AL, I0_HIGH_AL,
I0_HIGH_WARN). Setting parameters Ps Seq A on delay time, Ps Seq A off delay
time, Ng Seq A on delay time, Ng Seq A off delay time, Zro Seq A on delay time, Zro
Seq A off delay time are used for controlling the activation and the deactivation of
alarm and warning outputs.
Instantaneous sequence currents in amperes are available for application
configurations through outputs I2_INST, I1_INST and I0_INST.
Analog channel configuration
CSMSQI has one analog group input which must be properly configured.
Table 1258: Analog inputs
Input
I3P
See the preprocessing function blocks in this document for the
possible signal sources.
IEC 61850 IEC 60617
identification identification
CSMSQI I1, I2, I0
Description
Three-phase currents
1MRS759142 C
ANSI/IEEE C37.2
device number
I1, I2, I0
REX640
Technical Manual