Technical Revision History; Frequency Protection Frpfrq; Identification; Function Block - ABB RELION 611 Series Technical Manual

1MRS757454 D
4.5.5.10
4.6
4.6.1
4.6.2
4.6.3
611 series
Technical Manual
Characteristic
Retardation time
Operate time accuracy in definite time mode
Suppression of harmonics
Start value = 1.0 × U
1) , positive-sequence voltage before fault = 1.1 × U
n
undervoltage with nominal frequency injected from random phase angle, results based on statistical
distribution of 1000 measurements
2) Includes the delay of the signal output contact

Technical revision history

Table 311: PSPTUV Technical revision history
Technical revision
B
C
D

Frequency protection FRPFRQ

Identification

Function description
Frequency protection

Function block

GUID-744529D8-E976-4AFD-AA77-85D6ED2C3B70 V1 EN
Figure 132: Function block

Functionality

The frequency protection function FRPFRQ is used to protect network components
against abnormal frequency conditions.
Protection functions
Value
<35 ms
±1.0% of the set value or ±20 ms
DFT: -50 dB at f = n × f
Change
-
Internal improvement
Internal improvement
IEC 61850 IEC 60617
identification identification
FRPFRQ f>/f<,df/dt
Section 4
, where n = 2, 3, 4, 5,...
n
, f = 50 Hz, positive sequence
n n
ANSI/IEEE C37.2
device number
81
281