ABB Relion 670 Series Technical Reference Manual page 402

Section 7
Current protection
7.2.6
7.3
396
Technical data
Table 194: 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 728, table 729 and table
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
Instantaneous residual overcurrent protection EFPIOC
(50N)
Function description
Instantaneous residual overcurrent
protection
Setting range
lBase
(5-2500)% of
> 95% at (50–2500)% of
lBase
lBase
(1-10000)% of
(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
730
Min. = 15 ms
Max. = 30 ms
Min. = 15 ms
Max. = 30 ms
10 ms typically at 0 to 2 x I
15 ms typically
IEC 61850
identification
EFPIOC
1MRK505222-UUS C
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 728, table 729
730
-
set
-
IEC 60617 ANSI/IEEE C37.2
identification device number
50N
IN>>
IEF V1 EN
Technical reference manual
and table