ABB Relion 670 Series Applications Manual page 414

Section 14
Monitoring
14.12.4 Setting guidelines
The setting parameters for fault current and voltage reporting function FLTMMXU can be set via
Protection and Control Manager PCM600.
Operation: This is used to disable/enable the operation of fault current and voltage reporting function,
that is, Off/On.
PreTrig: This setting is used to set the number of power system cycles to be considered for fault event
data window prior to positive edge of the binary input TRIGFLTUI.
PostTrig: This setting is used to set the number of power system cycles to be considered for fault event
data window after the positive edge of binary input TRIGFLTUI.
14.12.5 Setting example
Consider a line-to-ground fault in phase L2 of a 11.4 kV, 11.8 MVA, 60 Hz system. The voltage and
current signals in the system are shown in
Table 54:
Name
Rated MVA capacity (SBase)
Rated voltage (UBase)
Rated Current (IBase)
System Frequency
VT ratio
CT ratio
408
System details
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Figure 206.
Value
11.8
11.4kV
600 A
60 Hz
11.4 kV/115V
600/5A
1MRK 505 370-UUS Rev. K
GUID-0A8DF112-1058-4B1C-BEB2-AAD055D99646 v1
GUID-C7B226B7-AEA0-46CE-8D05-B5D7109EE394 v1
Busbar protection REB670
Application manual