measurement RESCMMXU1 measures the residual current. Residual current input is
connected to the X130 card in the back panel.
The three-phase bus side phase voltage inputs to the IED are measured by three-phase
voltage measurement VMMXU1. The three-phase current input is connected to the
X131, X132 and X133 card in the back panel for three-phases. The sequence voltage
measurement VSMSQI1 measures the sequence voltage and the residual voltage
measurement RESCMMXU1 measures the voltage current.
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.
The frequency measurement FMMXU1 of the power system and the three-phase
power and energy measurement PEMMXU1 are available. The load profile function
LDPRLRC1 is included in the measurements sheet. LDPRLRC1 offers 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.
CMMXU1
BLOCK HIGH_ALARM
HIGH_WARN
LOW_WARN
LOW_ALARM
GUID-5CF6151E-675F-4D52-A05B-76747273B4C3 V1 EN
Figure 546: Current measurement: Three-phase current measurement
GUID-174871F1-2798-4488-858C-65138C7DAAA5 V1 EN
Figure 547: Current measurement: Sequence current measurement
RESCMMXU1
BLOCK HIGH_ALARM
HIGH_WARN
GUID-1256C1B6-5D8B-463D-B7D3-037188280FCE V1 EN
Figure 548: Current measurement: Residual current measurement
Section 3 1MRS756378 S
REF615 standard configurations
348 REF615
Application Manual
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