GE 869 Communications Manual page 68

THE IEC 61850 CONFIGURATOR
8-10
The equations to calculate minimum (min) and maximum (max) values in the MMXU
nodes are as follows:
Table 8-3: Calculate Min/Max MMXU Node Values
MMXU Node Value
TotW
TotVar
TotVA
TotPF
Hz
HzRte
PPV
PhV
A$phsA, phsB, phsC
A$neut
A$net
A$res
AuxV
SeqA$c1, c2 ,c3
SeqV$c1, c2, c3
dbAng
See the following list of supported parameters. Note that the same list is also
supported for the MSQI logical node. MSQI parameters are displayed only if the relay
supports sensitive ground CT.
Supported Parameters
869.MMXU1$CF$TotW$db
869.MMXU1$CF$TotVAr$db
869.MMXU1$CF$TotVA$db
869.MMXU1$CF$TotPF$db
869.MMXU1$CF$Hz$db
869.MMXU1$CF$Hz3VT$db
869.MMXU1$CF$HzVx$db
869.MMXU1$CF$PPV$phsAB$db
869.MMXU1$CF$PPV$phsAB$dbAng
869.MMXU1$CF$PPV$phsBC$db
869.MMXU1$CF$PPV$phsBC$dbAng
869.MMXU1$CF$PPV$phsCA$db
To Calculate
max = (Phase CT Primary * 46) * (Phase VT Ratio * 240) / 1000
min = -max
Note that the max is divided by 1000 to convert from W to kW
max = (Phase CT Primary * 46) * (Phase VT Ratio * 240) / 1000
min = -max
max = (Phase CT Primary * 46) * (Phase VT Ratio * 240) / 1000
min = -max
max = 1
min = -1
max = 90
min = 0
max = 15
min = -15
max = Phase VT Ratio * 240
min = 0
max = Phase VT Ratio * 240
min = 0
max = (Phase CT Primary * 46)
min = 0
max = (Ground CT Primary * 46)
min = 0
max = (Phase CT Primary * 46)
min = 0
max = (Sens. Ground CT Primary * 3)
min = 0
max = Aux. VT Ratio * 240
min = 0
max = (Phase CT Primary * 46)
min = 0
max = (Phase VT Ratio * 240)
min = 0
angle dB = (DB percentage* 360)
869 MOTOR PROTECTION SYSTEM – COMMUNICATIONS GUIDE
CHAPTER 8: IEC 61850