Monitored Data; Technical Data; Load Shedding And Restoration 81Lsh; Identification - ABB RELION 620 Series Technical Manual

1MAC504801-IB E
Table 268: 81 Non group settings
Parameter Values (Range)
Operation 1=enable
5=disable
Reset delay Tm Freq 0...60000
Reset delay Tm df/dt 0...60000
4.3.1.8
4.3.1.9
4.3.2
4.3.2.1
620 series ANSI
Technical Manual
Unit Step
ms 1
ms 1

Monitored data

Table 269: 81 Monitored data
Name Type
PICKUP_DUR FLOAT32
ST_DUR_OFRQ FLOAT32
ST_DUR_UFRQ FLOAT32
ST_DUR_FRG FLOAT32
81 Enum

Technical data

Table 270: 81 Technical data
Characteristic
Operation accuracy f>/f<
df/dt
Pickup time f>/f<
df/dt
Reset time
Trip time accuracy

Load shedding and restoration 81LSH

Identification

Function description
Load shedding and restoration
Default Description
1=enable Operation Disable / Enable
0 Reset delay time for frequency
0 Reset delay time for rate of change
Values (Range) Unit
0.00...100.00 %
0.00...100.00 %
0.00...100.00 %
0.00...100.00 %
1=Enabled
2=blocked
3=test
4=test/blocked
5=Disabled
Value
±10 mHz
±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)
<80 ms
<120 ms
<150 ms
±1.0% of the set value or ±30 ms
IEC 61850 IEC 60617
identification identification
LSHDPFRQ UFLS/R
Section 4
Protection functions
Description
Pickup duration
Pickup duration
Pickup duration
Pickup duration
Status
ANSI/IEEE C37.2
device number
81LSH
327