ABB RES670 Product Manual page 31

Phasor measurement unit RES670 ANSI
Customized
Product version: 1.2
Current protection
Table 22. Four step phase overcurrent protection OC4PTOC (51/67)
Function
Trip current
Reset ratio
Min. operating current
Relay characteristic angle (RCA)
Relay operating angle (ROA)
2nd harmonic blocking
Independent time delay at 0 to 2 x
I
set
Minimum trip time
Inverse characteristics, see
table 66, table 67 and table 68
Trip time, pickup non-directional at
0 to 2 x I
set
Reset time, pickup non-directional
at 2 to 0 x I
set
Critical impulse time
Impulse margin time
ABB
Setting range
(5-2500)% of lBase
lBase
> 95% at (50–2500)% of
(1-10000)% of lBase
(40.0–65.0) degrees
(40.0–89.0) degrees
(5–100)% of fundamental
(0.000-60.000) s
(0.000-60.000) s
16 curve types
Min. = 15 ms
Max. = 30 ms
Min. = 15 ms
Max. = 30 ms
10 ms typically at 0 to 2 x I
set
15 ms typically
1MRK511254-BUS B
Accuracy
± 1.0% of I at I ≤ I
n n
± 1.0% of I at I > I
n
-
± 1.0% of I at I ≤ I
n n
±1.0% of I at I > I
n
± 2.0 degrees
± 2.0 degrees
± 2.0% of I
n
± 0.2 % or ± 35 ms whichever is
greater
± 2.0 % or ± 40 ms whichever is
greater
See table 66, table 67 and table
-
-
68
31