AND
B1
B2
O
AND
B1
B2
O
OR
B1
B2
O
FALSE
FALSE
CBXCBR1_AU_CLOSE
CONTROL_LOCAL
CONTROL_REMOTE
GUID-D63AE948-455C-498A-824F-6EF494C57C06 V1 EN
Figure 203: External closing command for circuit breaker 1
AND
B1
B2
O
AND
B1
B2
O
OR
B1
B2
O
FALSE
FALSE
CBXBCR1_AU_OPEN
CONTROL_LOCAL
CONTROL_REMOTE
GUID-53BFABFE-E563-4D53-9FE6-891D0865EB54 V1 EN
Figure 204: External opening command for circuit breaker 1
3.7.3.5 Functional diagrams for measurement functions
The phase current inputs to the IED are measured by the three-phase current
measurement function CMMXU1. The current input is connected to the X120 card in
the back panel. The sequence current measurement CSMSQI1 measures the sequence
current and the residual current measurement RESCMMXU1 measures the residual
current.
The three-phase bus side phase voltage inputs to the IED are measured by three-phase
voltage measurement VMMXU1. 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 measurements can be seen from 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. Load profile record
LDPRLRC1 is included in the measurements sheet. LDPRLRC1 offers the ability to
observe the loading history of the corresponding feeder.
CMMXU1
BLOCK HIGH_ALARM
HIGH_WARN
LOW_WARN
LOW_ALARM
GUID-40AF615B-1FC1-4ACD-9605-8D6DD5DC23C3 V1 EN
Figure 205: Current measurement: Three-phase current measurement
1MRS756378 S Section 3
REF615 standard configurations
REF615 159
Application Manual
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