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The measurements can be seen in the LHMI and they are available under the
measurement option in the menu selection. Based on the settings, function blocks can
generate low alarm or warning and high alarm or warning signals for the measured
current values.
Load profile record LDPRLRC1 is included in the measurements sheet. LDPRLRC1
gives the ability to observe the loading history of the corresponding feeder.
The power quality functions CMHAI1 and VMHAI1 can be used to measure the
harmonic contents of the phase current and phase voltages. The voltage variation, that
is, sage and swells can be measured by the voltage variation function PHQVVR1. By
default, these power quality functions are not included in the configuration. The
required logic connections can be made depending on the application by PCM600.
The three-phase bus side phase voltage and single phase line side phase voltage inputs
to the IED can be measured by three-phase voltage measurement VMMXU1 and
VMMXU2. The voltage input is connected to the X130 card in the back panel. The
sequence voltage measurement VSMSQI1 measures the sequence voltage and the
residual voltage measurement RESVMMXU1 measures the residual voltage.
The frequency measurement FMMXU1 of the power system and the three-phase
power and energy measurement PEMMXU1 are available.
However, these voltage, frequency and power measurement functions need to be
added in application configurations.
CMMXU1
BLOCK
HIGH_ALARM
HIGH_WARN
LOW_WARN
LOW_ALARM
GUID-77B3EBC2-B1B3-45B9-A87D-994D23CD6CCF V1 EN
Figure 590:
Current measurement: Three-phase current measurement
CSMSQI1
GUID-6AA5792D-D33A-459E-B38C-C42BA50E56A6 V1 EN
Figure 591:
Current measurement: Sequence current measurement
RESCMMXU1
BLOCK
HIGH_ALARM
HIGH_WARN
GUID-15030D32-F6B4-4234-8B89-1129B3A86DB7 V1 EN
Figure 592:
Current measurement: Residual current measurement
Section 3
1MRS756378 S
REF615 standard configurations
372
REF615
Application Manual
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