Functional Diagrams For Measurement Functions - ABB RELION 615 Series Applications Manual

1MAC109016-MB C
3.5.3.5
REF615 ANSI
Application Manual
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Figure 149: Circuit breaker 1 close blocking logic

Functional diagrams for measurement functions

The phase current inputs to the relay are measured by the three-phase current
measurement function CMMXU1. The three phase current input is connected to the X131,
X132 and X133 card in the back panel for three phases. The sequence current
measurement CSMSQI1 measures the sequence current and the residual current
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 relay 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.
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Figure 150: Three-phase current measurement
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Figure 151: Sequence current measurements
REF615 standard configurations
OR6
B1 O
B2
B3
B4
B5
B6
O:74|T:2.5|I:17
CMMXU1
BLOCK HIGH_ALARM
HIGH_WARN
LOW_WARN
LOW_ALARM
O:158|T:5|I:1
CSMSQI1
O:155|T:5|I:1
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