ABB 615 Series ANSI, Техническое руководство, Страница: 286 / 713

1MAC050144-MB C
Section 4
Protection functions
615 series ANSI 279
Technical Manual
4.3.2.7 Settings
Table 275: 81SH non-group settings
Table 276: 81SH group settings
4.3.2.8 Monitored data
Table 277: 81SH monitored data
4.3.2.9 Technical data
Table 278: 81LSH technical data
Parameter Values (Range) Unit Step Default Description
Operation 1=enable
5=disable
1=enabl
e
Operation Disable / Enable
Reset delay time 0...60000 ms 1 50 Time delay after which the definite timers will reset
Parameter Values (Range) Unit Step Default Description
Load shed mode 1=Freq< 1=Freq< Set the operation mode for load shedding function
6=Freq< OR df/dt
8=Freq< AND df/dt
Restore mode 1=Disabled 1=Disabled Mode of operation of restore functionality
2=Auto
3=Manual
Pickup value Freq 0.800...1.200 xFn 0.001 0.975 Frequency setting/pickup value
Pickup value df/dt -0.200...-0.005 xFn /s 0.005 -0.01 Setting of frequency gradient for df/dt detection
Trip Tm Freq 80...200000 ms 10 200 Time delay to trip for under frequency stage
Trip Tm df/dt 120...200000 ms 10 200 Time delay to trip for df/dt stage
Restore pickup Val 0.800...1.200 xFn 0.001 0.998 Restore frequency setting value
Restore delay time 80...200000 ms 10 300 Time delay to restore
Name Type Values (Range) Unit Description
START_DUR FLOAT32 0.00...100.00 % pickup duration
81LSH Enum 1=on
2=blocked
3=test
4=test/blocked
5=off
Status
Characteristic Value
Pickup accuracy f< ±10 mHz
df/dt
±100 mHz/s (in range |df/dt| < 5 Hz/s)
± 2.0% of the set value (in range 5 Hz/s
< |df/dt| < 15 Hz/s)
Pickup time f< < 80 ms
df/dt < 120 ms
Reset time < 150 ms
Trip time accuracy ±1.0% of the set value or ±30 ms