Name Type Values (Range) Unit Description
U_DIFF_SYNC BOOLEAN
0=False
1=True
Voltage differ-
ence out of lim-
it for synchroniz-
ing
PH_DIF_SYNC BOOLEAN
0=False
1=True
Phase angle dif-
ference out of
limit for synchro-
nizing
FR_DIFF_SYNC BOOLEAN
0=False
1=True
Frequency differ-
ence out of lim-
it for synchroniz-
ing
SECRSYN Enum
1=on
2=blocked
3=test
4=test/blocked
5=off
Status
9.3.9 Technical data
Table 1000: SECRSYN Technical data
Characteristic Value
Operation accuracy Depending on the frequency of the voltage measured: f 
n
 ±1
Hz
Voltage:
±3.0 % of the set value or ±0.01 × U 
n
Frequency:
±10 mHz
Phase angle:
±3°
Reset time <50 ms
Reset ratio Typically 0.96
Operate time accuracy in definite time mode ±1.0 % of the set value or ±20 ms
9.4 Autoreclosing DARREC
9.4.1 Identification
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Autoreclosing DARREC O -> I 79
1MRS757644 H Control functions
620 series
Technical Manual
1011