Technical Revision History - ABB RELION Series Technical Manual

1MRS758755 A
4.4.5.10
4.5
4.5.1
4.5.1.1
4.5.1.2
4.5.1.3
REC615 and RER615
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 456: PSPTUV Technical revision history
Technical revision
B
C
D
Frequency protection
Frequency protection FRPFRQ
Identification
Function description
Frequency protection
Function block
GUID-744529D8-E976-4AFD-AA77-85D6ED2C3B70 V1 EN
Figure 222: 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
435