ABB RELION SMU615 Applications Manual page 63

Substation merging unit
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1MRS758580 C
GOOSERCV_BIN 0_MASTER_TRIP 1
GOOSERCV_BIN 10_MASTER_TRIP 1
GOOSERCV_BIN 1_MASTER_TRIP 2
GOOSERCV_BIN 11_MASTER_TRIP 2
GOOSERCV_BIN 2_MASTER_TRIP 3
GOOSERCV_BIN 12_MASTER_TRIP 3
GOOSERCV_BIN 3_MASTER_TRIP 4
GOOSERCV_BIN 13_MASTER_TRIP 4
GOOSERCV_BIN 4_MASTER_TRIP 5
GOOSERCV_BIN 14_MASTER_TRIP 5
Figure 36: Trip logic
3.4.3.6
Functional diagrams for measurement functions
The phase current inputs to the merging unit are measured by the three-
phase current measurement function CMMXU1. Similarly, the sequence current
measurement CSMSQI1 measures the sequence current and the residual current
measurement RESCMMXU1 measures the residual current.
The phase voltage inputs to the merging unit are measured by the three-phase
voltage measurement function VMMXU1. The sequence voltage measurement
VSMSQI1 measures the sequence voltage.
The measurements can be seen from the WHMI and they are available under the
Measurement menu in the left navigation bar. 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 of the power system FMMXU1 and the three-phase
power and energy measurement PEMMXU1 are also available.
Figure 37: Current measurement: Three-phase current measurement
SMU615
Application Manual
OR
B1
O
B2
BLOCK
O:28|T:2.5|I:1
OPERATE
RST_LKOUT
GENERAL_LOCKOUT_RESET
OR
B1
O
B2
BLOCK
O:26|T:2.5|I:2
OPERATE
RST_LKOUT
GENERAL_LOCKOUT_RESET
OR
B1
O
B2
BLOCK
O:27|T:2.5|I:3
OPERATE
RST_LKOUT
GENERAL_LOCKOUT_RESET
OR
B1
O
B2
BLOCK
O:23|T:2.5|I:4
OPERATE
RST_LKOUT
GENERAL_LOCKOUT_RESET
OR
B1
O
B2
BLOCK
O:25|T:2.5|I:5
OPERATE
RST_LKOUT
GENERAL_LOCKOUT_RESET
B1
TRPPTRC1_TRIP
B2
TRPPTRC2_TRIP
B3
TRPPTRC3_TRIP
B4
TRPPTRC4_TRIP
B5
TRPPTRC5_TRIP
B6
CMMXU1
BLOCK
HIGH_ALARM
HIGH_WARN
LOW_WARN
LOW_ALARM
O:70|T:5|I:1
Merging unit variants
TRPPTRC1
TRIP
TRPPTRC1_TRIP
CL_LKOUT
O:33|T:2.5|I:1
TRPPTRC2
TRIP
TRPPTRC2_TRIP
CL_LKOUT
O:31|T:2.5|I:2
TRPPTRC3
TRIP
TRPPTRC3_TRIP
CL_LKOUT
O:32|T:2.5|I:3
TRPPTRC4
TRIP
TRPPTRC4_TRIP
CL_LKOUT
O:29|T:2.5|I:4
TRPPTRC5
TRIP
TRPPTRC5_TRIP
CL_LKOUT
O:30|T:2.5|I:5
OR6
O
GENERAL_TRPPTRC_TRIP
O:34|T:2.5|I:0
CMMXU1_HIGH_WARN
63

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