ABB Relion 670 series REC670, Product Manual

Page: 40 / 84

Table 30. Instantaneous residual overcurrent protection EFPIOC
Function Range or value Accuracy
Operate current (1-2500)% of lBase ± 1.0% of I
r
at I £ I
r
±
1.0% of I at I > I
r
Reset ratio > 95% -
Operate time 25 ms typically at 0 to 2 x I
set
-
Reset time 25 ms typically at 2 to 0 x I
set
-
Critical impulse time 10 ms typically at 0 to 2 x I
set
-
Operate time 10 ms typically at 0 to 10 x I
set
-
Reset time 35 ms typically at 10 to 0 x I
set
-
Critical impulse time 2 ms typically at 0 to 10 x I
set
-
Dynamic overreach < 5% at
t
= 100 ms -
Table 31. Four step residual overcurrent protection EF4PTOC
Function Range or value Accuracy
Operate current (1-2500)% of lBase
±
1.0% of I
r
at I
<
I
r
± 1.0% of I at I > I
r
Reset ratio > 95% -
Operate current for directional
comparison (1–100)% of
lBase
±
1.0% of I
r
Timers (0.000-60.000) s ± 0.5% ± 10 ms
Inverse characteristics, see table
98 , table 99 and table 100
18 curve types See table 98 , table 99 and table
100
Second harmonic restrain
operation (5–100)% of fundamental
±
2.0% of I
r
Relay characteristic angle (-180 to 180) degrees ± 2.0 degrees
Minimum polarizing voltage (1–100)% of
UBase
± 0.5% of U
r
Minimum polarizing current (1-30)% of
IBase
±
0.25 % of I
r
Real part of source Z used for
current polarization (0.50-1000.00)
W
/phase -
Imaginary part of source Z used
for current polarization (0.50–3000.00) W /phase -
Operate time, start function 25 ms typically at 0 to 2 x I
set
-
Reset time, start function 25 ms typically at 2 to 0 x I
set
-
Critical impulse time 10 ms typically at 0 to 2 x I
set
-
Impulse margin time 15 ms typically -
Bay control REC670 1MRK511232-BEN E
Pre-configured
Product version: 1.2
40 ABB