ABB Relion RES670, Technical Manual

Page: 193 / 934

restraint feature is active, the OC4PTOC 51_67 function output signal ST2NDHRM
will be set to the logical value
one .
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 56: Second harmonic blocking
8.1.8 Technical data
M12342-1 v20
Table 98: OC4PTOC (51/67) technical data
Function Setting range Accuracy
Trip current, step 1-4 (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 -
Minimum operate current, step 1-4 (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
Second harmonic blocking (5–100)% of fundamental
± 2.0% of I
n
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 trip 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 687 ,
table 688 and table 689
16 curve types See table 687 ,
table 688 and table
689
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 x I
set
to 0
Min. = 15 ms -
Max. = 30 ms
Table continues on next page
1MRK 511 408-UUS A
Section 8
Current protection
Phasor measurement unit RES670 2.2 ANSI 187
Technical manual