ABB REL670 Product Manual page 74

Line distance protection REL670 2.2
Product version: 2.2
Current protection
Table 50. Instantaneous phase overcurrent protection PHPIOC
Function
Operate current
Reset ratio
Operate time at 0 to 2 x I
set
Reset time at 2 x I to 0
set
Critical impulse time
Operate time at 0 to 10 x I
set
Reset time at 10 x I to 0
set
Critical impulse time
Dynamic overreach
Table 51. Directional phase overcurrent protection, four steps OC4PTOC
Function
Operate current, step 1-4
Reset ratio
Minimum operate current, step 1-4
Relay characteristic angle (RCA)
Relay operating angle (ROA)
Second harmonic blocking
Independent time delay at 0 to 2 x I
Minimum operate time for inverse curves , step
1-4
Inverse time characteristics, see table 180,
table 181 and table 182
Operate time, start non-directional at 0 to 2 x I
Reset time, start non-directional at 2 x I
Operate time, start non-directional at 0 to 10 x
I
set
Reset time, start non-directional at 10 x I
Critical impulse time
Impulse margin time
74
Range or value
(5-2500)% of lBase
> 95% at (50–2500)% of IBase
Min. = 15 ms
Max. = 25 ms
Min. = 15 ms
Max. = 25 ms
10 ms typically at 0 to 2 x I
set
Min. = 5 ms
Max. = 15 ms
Min. = 25 ms
Max. = 40 ms
2 ms typically at 0 to 10 x I
set
< 5% at t = 100 ms
Setting range
lBase
(5-2500)% of
> 95% at (50–2500)% of
lBase
(1-10000)% of
(40.0–65.0) degrees
(40.0–89.0) degrees
(5–100)% of fundamental
, step 1-4 (0.000-60.000) s
set
(0.000-60.000) s
16 curve types
Min. = 15 ms
set
Max. = 30 ms
to 0 Min. = 15 ms
set
Max. = 30 ms
Min. = 5 ms
Max. = 20 ms
to 0 Min. = 20 ms
set
Max. = 35 ms
10 ms typically at 0 to 2 x I
15 ms typically
Accuracy
±1.0% of I at I ≤ I
r r
±1.0% of I at I > I
r
lBase -
±1.0% of I at I ≤ I
r r
±1.0% of I at I > I
r
±2.0 degrees
±2.0 degrees
±2.0% of I
r
±0.2% or ±35 ms whichever is greater
±0.2% or ±35 ms whichever is greater
See table 180, table 181
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-
-
-
-
set
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1MRK 506 372-BEN -
Accuracy
±1.0% of I at I ≤ I
r r
±1.0% of I at I > I
r
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-
-
-
-
-
-
-
and table 182
ABB