![background image](http://html1.mh-extra.com/html/abb/red650/red650_technical-manual_3413554184.webp)
a
b
a>b
BLOCK
AND
I
OP
Extract second
harmonic current
component
Extract
fundamental
current component
X
2ndHarmStab
a
b
a>b
a
b
a>b
0.07*IBase
IEC13000014-2-en.vsd
2ndH_BLOCK_Int
IEC13000014 V2 EN-US
Figure 80:
Second harmonic blocking
8.2.8
Technical data
M12342-1 v20
Table 75:
OC4PTOC technical data
Function
Setting range
Accuracy
Operate current, step 1-4
(5-2500)% of
lBase
±
1.0% of I
r
at I ≤ I
r
±
1.0% of I at I > I
r
Reset ratio
> 95% at (50–2500)% of
lBase -
Minimum operate current, step 1-4
(1-10000)% of
lBase
±
1.0% of I
r
at I ≤ I
r
±
1.0% of I at I > I
r
Relay characteristic angle (RCA)
(40.0–65.0) degrees
±
2.0 degrees
Relay operating angle (ROA)
(40.0–89.0) degrees
±
2.0 degrees
Second harmonic blocking
(5–100)% of fundamental
±
2.0% of I
r
Independent time delay at 0 to 2 x I
set
, step
1-4
(0.000-60.000) s
±
0.2% or
±
35 ms
whichever is
greater
Minimum operate time for inverse curves ,
step 1-4
(0.000-60.000) s
±0.2% or ±35 ms
whichever is
greater
Inverse time characteristics, see table
16 curve types
See table
and
Operate time, start non-directional at 0 to 2 x
I
set
Min. = 15 ms
-
Max. = 30 ms
Reset time, start non-directional at 2 x I
set
to 0 Min. = 15 ms
-
Max. = 30 ms
Operate time, start non-directional at 0 to 10
x I
set
Min. = 5 ms
Max. = 20 ms
-
Reset time, start non-directional at 10 x I
set
to
0
Min. = 20 ms
Max. = 35 ms
-
Critical impulse time
10 ms typically at 0 to 2 x I
set
-
Impulse margin time
15 ms typically
-
Section 8
1MRK 505 394-UEN A
Current protection
178
Line differential protection RED650 2.2 IEC
Technical manual
Summary of Contents for RED650
Page 1: ...RELION 650 SERIES Line differential protection RED650 Version 2 2 Technical manual...
Page 2: ......
Page 36: ...30...
Page 46: ...40...
Page 232: ...226...
Page 272: ...266...
Page 288: ...282...
Page 306: ...300...
Page 406: ...400...
Page 436: ...430...
Page 502: ...496...
Page 614: ...608...
Page 628: ...622...
Page 644: ...638...
Page 760: ...754...
Page 778: ...772...
Page 814: ...808...
Page 870: ...864...
Page 874: ...868...
Page 924: ...918...
Page 925: ...919...