ABB Relion 670 Series Product Manual page 65

Line differential protection RED670 2.0
Product version: 2.0
Table 44. Instantaneous residual overcurrent protection EFPIOC
Function
Operate current
Reset ratio
Operate time at 0 to 2 x I
set
Reset time at 2 to 0 x I
set
Critical impulse time
Operate time at 0 to 10 x I
set
Reset time at 10 to 0 x I
set
Critical impulse time
Dynamic overreach
Table 45. Four step residual overcurrent protection EF4PTOC technical data
Function
Operate current
Reset ratio
Operate current for directional
comparison
Independent time delay for step 1,
2, 3, and 4
Inverse characteristics, see table
131, table 132 and table 133
Second harmonic restrain
operation
Relay characteristic angle
Minimum polarizing voltage
Minimum polarizing current
Real part of source Z used for
current polarization
Imaginary part of source Z used
for current polarization
Operate time, start function at 0 to
2 x I
set
Reset time, start function at 2 to 0
x I
set
Critical impulse time
Impulse margin time
ABB
Range or value
(5-2500)% of lBase
> 95% at (50–2500)% of lBase
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. = 35 ms
2 ms typically at 0 to 10 x I
set
< 5% at t = 100 ms
Range or value
lBase
(1-2500)% of
lBase
> 95% at (1-2500)% of
lBase
(1–100)% of
(0.000-60.000) s
18 curve types
(5–100)% of fundamental
(-180 to 180) degrees
UBase
(1–100)% of
IBase
(2-100)% of
(0.50-1000.00) W/phase
(0.50–3000.00) W/phase
Min 18 ms
Max 28 ms
Min 18 ms
Max 28 ms
10 ms typically at 0 to 2 x I
set
15 ms typically
1MRK505310-BEN C
Accuracy
±1.0% of I at I ≤ I
r r
±1.0% of I at I > I
r
-
-
-
-
-
-
-
-
Accuracy
± 1.0% of I at I < I
r r
± 1.0% of I at I > I
r
-
For RCA ± 60 degrees:
± 2.5% of I at I ≤ I
r r
± 2.5% of I < I
r
± 0.2% or ± 35 ms whichever is
greater at 0 to 2 x I
set
See table 131, table 132 and table
133
± 2.0% of I
r
± 2.0 degrees
± 0.5% of U
r
± 1.0% of I
r
-
-
-
-
-
-
65