ABB Relion 611 Series, Technical Manual

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a start is restored without an operate event, the start duration shows the protection
function that has started first.
Start duration that has the value of 100% indicates that a protection function has
operated during the fault. If the protection functions has not operated, though another
function might have operated during this period, Start duration always shows values
less than 100%.
The Fault recorded data Protection and Start duration is from the same protection
function. The Fault recorded data operate time shows the time of the actual fault
period. This value is the time difference between the activation of the internal start and
operate signals. The actual operate time also includes the starting time and the delay
of the output relay. The Fault recorded data
Breaker clear time is the time difference
between internal operate signal and activation of
CB_CLRD
input.
If some functions in relay application are sensitive to start frequently
it might be advisable to set the setting parameter
Trig mode to “From
operate”. Then only faults that cause an operate event trigger a new
fault recording.
The fault-related current, voltage, frequency, angle values, shot pointer and the active
setting group number are taken from the moment of the operate event, or from the
beginning of the fault if only a start event occurs during the fault. The maximum
current value collects the maximum fault currents during the fault. In case frequency
cannot be measured, nominal frequency is used for frequency and zero for Frequency
gradient and validity is set accordingly.
Measuring mode for phase current and residual current values can be selected with the
Measurement mode setting parameter.
3.9.3 Settings
Table 42: FLTRFRC Non group settings (Basic)
Parameter Values (Range) Unit Step Default Description
Operation 1=on
5=off
1=on Operation Off / On
Trig mode 0=From all faults
1=From operate
2=From only start
0=From all faults Triggering mode
Table 43: FLTRFRC Non group settings (Advanced)
Parameter Values (Range) Unit Step Default Description
A measurement mode 1=RMS
2=DFT
3=Peak-to-Peak
2=DFT Selects used measurement mode phase
currents and residual current
Section 3
1MRS757454 D
Basic functions
64 611 series
Technical Manual