
20. Functions, codes and symbols
Table 45. Functions included in the merging unit
Function
IEC 61850
IEC 60617
IEC-ANSI
Measurement
Disturbance recorder
RDRE1
DR (1)
DFR (1)
Three-phase current measurement
CMMXU1
3I (1)
3I (1)
Sequence current measurement
CSMSQI1
I1, I2, I0 (1)
I1, I2, I0 (1)
Residual current measurement
RESCMMXU1
Io (1)
In (1)
Three-phase voltage measurement
VMMXU1
3U (1)
3V (1)
Sequence voltage measurement
VSMSQI1
U1, U2, U0 (1)
V1, V2, V0 (1)
Three-phase power and energy measurement PEMMXU1
P, E (1)
P, E (1)
Frequency measurement
FMMXU1
f (1)
f (1)
IEC 61850-9-2 LE sampled value sending
SMVSENDER
SMVSENDER
SMVSENDER
Condition monitoring and supervision
Circuit-breaker condition monitoring
SSCBR1
CBCM (1)
CBCM (1)
Trip circuit supervision
TCSSCBR1
TCS (1)
TCM (1)
TCSSCBR2
TCS (2)
TCM (2)
Current circuit supervision
CCSPVC1
MCS 3I (1)
MCS 3I (1)
Fuse failure supervision
SEQSPVC1
FUSEF (1)
60 (1)
Arc detection
ARCDSARC1
ARCD (1)
AFD (1)
ARCDSARC2
ARCD (2)
AFD (2)
ARCDSARC3
ARCD (3)
AFD (3)
Control
Circuit-breaker control
CBXCBR1
I <-> O CB (1)
I <-> O CB (1)
Disconnector control
DCXSWI1
I <-> O DCC (1)
I <-> O DCC (1)
DCXSWI2
I <-> O DCC (2)
I <-> O DCC (2)
Earthing switch control
ESXSWI1
I <-> O ESC (1)
I <-> O ESC (1)
Disconnector position indication
DCSXSWI1
I <-> O DC (1)
I <-> O DC (1)
DCSXSWI2
I <-> O DC (2)
I <-> O DC (2)
Earthing switch indication
ESSXSWI1
I <-> O ES (1)
I <-> O ES (1)
Other
Minimum pulse timer (2 pcs)
TPGAPC1
TP (1)
TP (1)
TPGAPC2
TP (2)
TP (2)
TPGAPC3
TP (3)
TP (3)
TPGAPC4
TP (4)
TP (4)
Minimum pulse timer (2 pcs, second resolution) TPSGAPC1
TPS (1)
TPS (1)
Minimum pulse timer (2 pcs, minute resolution) TPMGAPC1
TPM (1)
TPM (1)
Pulse timer (8 pcs)
PTGAPC1
PT (1)
PT (1)
PTGAPC2
PT (2)
PT (2)
Substation Merging Unit
1MRS758420 B
SMU615
Product version: 1.0
ABB
29