ABB Relion 670 series, Technical Reference Manual

Page: 402 / 1232

7.2.6 Technical data
Table 194: OC4PTOC (51/67)
Function Setting range Accuracy
Trip current (5-2500)% of lBase
±
1.0% of I
n
at I ≤ I
n
± 1.0% of I at I > I
n
Reset ratio > 95% at (50–2500)% of
lBase
-
Min. operating current (1-10000)% of lBase
±
1.0% of I
n
at I ≤ I
n
±
1.0% of I at I > I
n
Relay characteristic angle (RCA) (40.0–65.0) degrees ± 2.0 degrees
Relay operating angle (ROA) (40.0–89.0) degrees
±
2.0 degrees
2nd harmonic blocking (5–100)% of fundamental
±
2.0% of I
n
Independent time delay at 0 to 2 x
I
set
(0.000-60.000) s ± 0.2 % or ± 35 ms whichever is
greater
Minimum trip time (0.000-60.000) s ± 2.0 % or ± 40 ms whichever is
greater
Inverse characteristics, see
table 728 , table 729 and table 730
16 curve types See table 728 , table 729 and table
730
Trip time, pickup non-directional
at 0 to 2 x I
set
Min. = 15 ms
Max. = 30 ms
Reset time, pickup non-directional
at 2 to 0 x I
set
Min. = 15 ms
Max. = 30 ms
Critical impulse time 10 ms typically at 0 to 2 x I
set
-
Impulse margin time 15 ms typically -
7.3 Instantaneous residual overcurrent protection EFPIOC
(50N)
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Instantaneous residual overcurrent
protection
EFPIOC
IN>>
IEF V1 EN
50N
Section 7
1MRK505222-UUS C
Current protection
396
Technical reference manual