ABB Relion 670 Series Product Manual page 34

Phasor measurement unit RES670
Pre-configured
Product version: 1.2
Current protection
Table 21. Four step phase overcurrent protection OC4PTOC
Function
Operate current
Reset ratio
Min. operating current
Relay characteristic angle (RCA)
Maximum forward angle
Minimum forward angle
2nd harmonic blocking
Independent time delay
Minimum operate time
Inverse characteristics, see
table 64, table 65 and table 66
Operate time, start function
Reset time, start function
Critical impulse time
Impulse margin time
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Setting range
lBase
(1-2500)% of
> 95%
(1-100)% of lBase
(-70.0– -50.0) degrees
(40.0–70.0) degrees
(75.0–90.0) degrees
(5–100)% of fundamental
(0.000-60.000) s
(0.000-60.000) s
19 curve types
25 ms typically at 0 to 2 x I
set
25 ms typically at 2 to 0 x I
set
10 ms typically at 0 to 2 x I
set
15 ms typically
1MRK 511 266-BEN -
Accuracy
± 1.0% of I at I ≤ I
r r
± 1.0% of I at I > I
r
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± 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 degrees
± 2.0% of I
r
± 0.5% ±10 ms
± 0.5% ±10 ms
See table 64, table 65 and table
66
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ABB