ABB RELION REX640 Technical Manual page 940

Protection functions
Characteristic
Start time
Reset time
Operate time accuracy
4.6.2.11 Technical revision history
Table 903: LSHDPFRQ Technical revision history
Product connectivity level
PCL2
4.7 Impedance protection
4.7.1 Distance protection DSTPDIS (ANSI 21P, 21N)
4.7.1.1 Identification
Function description
Distance protection
4.7.1.2 Function block
Figure 520: Function block
940
Value
± 2.0% of the set value (in range 5 Hz/s <
|df/dt| < 15 Hz/s)
f< <80 ms
df/dt <120 ms
<150 ms
±1.0% of the set value or ±30 ms
Technical revision
E
IEC 61850
identification
DSTPDIS
1MRS759142 F
Change
Changed the Start value Freq
Restore start Val steps to
and
0.0001 xFn
IEC 60617 ANSI/IEEE C37.2
identification device number
Z< 21P, 21N
Technical Manual
REX640