4.6.1.7 Settings
Table 590: 81 Group settings (Basic)
Parameter
Values (Range) Unit Step Default Description
Trip mode 1=Freq<
2=Freq>
3=df/dt
4=Freq< + df/dt
5=Freq> + df/dt
6=Freq< OR df/dt
7=Freq> OR df/dt
1=Freq< Frequency protection trip mode selection
Pickup value Freq> 0.9000...1.2000 xFn 0.0001 1.0500 Frequency pickup value overfrequency
Pickup value Freq< 0.8000...1.1000 xFn 0.0001 0.9500 Frequency pickup value underfrequency
Pickup value df/dt -0.2000...0.2000 xFn /s 0.0025 0.0100 Frequency pickup value rate of change
Trip Tm Freq 80...200000 ms 10 200 Trip delay time for frequency
Trip Tm df/dt 120...200000 ms 10 400 Trip delay time for frequency rate of change
Table 591: 81 Non group settings (Basic)
Parameter Values (Range) Unit Step Default Description
Operation 1=enable
5=disable
1=enable Operation Disable / Enable
Table 592: 81 Non group settings (Advanced)
Parameter
Values (Range) Unit Step Default Description
Reset delay Tm Freq 0...60000 ms 1 0 Reset delay time for frequency
Reset delay Tm df/dt 0...60000 ms 1 0 Reset delay time for rate of change
4.6.1.8 Monitored data
Table 593: 81 Monitored data
Name
Type Values (Range) Unit Description
PICKUP_DUR FLOAT32 0.00...100.00 % Pickup duration
ST_DUR_OFRQ FLOAT32 0.00...100.00 % Pickup duration
ST_DUR_UFRQ FLOAT32 0.00...100.00 % Pickup duration
ST_DUR_FRG FLOAT32 0.00...100.00 % Pickup duration
81 Enum 1=Enabled
2=blocked
3=test
4=test/blocked
5=Disabled
Status
Section 4 1MAC059074-MB A
Protection functions
684 615 series ANSI
Technical Manual