Section 3 1MAC309294-MB F
Basic functions
52 RER620
Technical Manual
Table 33: Settings
Not all parameters belong to a setting group. For example protection function
enable/disable settings are not part of a setting group.
3.6 Recorded data
The relay has the capacity to store the records of 32 latest fault events. The records enable
the user to analyze the 32 most recent power system events. Each fault record (FLTMSTA)
is marked with an up-counting fault number. Slot fault record 1 always contains the newest
record, and fault record 32 the oldest. The time stamp is taken from the beginning of the
fault.
The fault recording period begins from the pickup event of any protection function and
ends if any protection function trips or the pickup(s) is restored before the trip event. The
type of fault that triggers the fault recording is selected with the setting parameter Trig
mode. When “From all faults” is selected, all types of detected faults trigger a new fault
recording. When “From trip” is selected, only faults that cause an trip event trigger a new
fault recording.Finally when From only pickup is selected, only faults that cause a
protection function restoring before the actual trip signal are recorded.
Fault recorder (FLR) collects some minimum and maximum current and voltage values
during the recording period. DFT, RMS or Peak-to-Peak can be set as the generic
measuring mode with setting parameter Measurement mode. The recording of the
maximum and minimum phase currents, maximum ground current and maximum ground
voltage is affected by the selected measuring mode and the maximum current and voltage
values are still collected 50 ms after the recording period is closed. In addition, the
maximum demand current is separately recorded with time stamp.
Fault recorder also provides Operation parameter that can be used for setting the recorder
into Enable/Disable and BLOCK input that can be used for blocking the recording
triggering by using logic, for example during the auto-reclosing sequence. The recorded
data can be separately cleared with parameters in the Clear menu.
The data recorded depend on the product and the standard configuration.
Parameter Setting Value Default Description Access rights
Setting group Active group 1...4 1 Selected
active group
RWRW
To Next Page
Loading...
Need help?
General
