Characteristic
Value
Retardation time
<35 ms
Operate time accuracy in definite time mode
±1.0% of the set value or ±20 ms
Suppression of harmonics
DFT: -50 dB at f = n × f
n
, where n = 2, 3, 4, 5,…
1)
Start value = 1.0 × U
n
, positive-sequence voltage before fault = 1.1 × U
n
, f
n
= 50 Hz, positive sequence
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
4.5.5.10
Technical revision history
Table 311:
PSPTUV Technical revision history
Technical revision
Change
B
-
C
Internal improvement
D
Internal improvement
4.6
Frequency protection FRPFRQ
4.6.1
Identification
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Frequency protection
FRPFRQ
f>/f<,df/dt
81
4.6.2
Function block
GUID-744529D8-E976-4AFD-AA77-85D6ED2C3B70 V1 EN
Figure 132:
Function block
4.6.3
Functionality
The frequency protection function FRPFRQ is used to protect network components
against abnormal frequency conditions.
1MRS757454 D
Section 4
Protection functions
611 series
281
Technical Manual
Summary of Contents for Relion 611 Series
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