ABB Relion 670 Series Product Manual page 35

ABB
Phasor measurement unit RES670
Pre-configured
Product version: 1.2
Table 22. Four step residual overcurrent protection EF4PTOC
Function
Operate current
Reset ratio
Operate current for directional
comparison
Timers
Inverse characteristics, see table
64, table 65 and table 66
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
Reset time, start function
Range or value
(1-2500)% of lBase
> 95%
lBase
(1–100)% of
(0.000-60.000) s
18 curve types
UBase
(1–100)% of
IBase
(1-30)% of
(0.50-1000.00) W/phase
(0.50–3000.00) W/phase
25 ms typically at 0 to 2 x I
set
25 ms typically at 2 to 0 x I
set
1MRK 511 266-BEN -
Accuracy
± 1.0% of I at I £ I
r r
± 1.0% of I at I > I
r
-
± 1.0% of I
r
± 0.5% ± ms
See table 64, table 65 and table
66
± 0.5% of U
r
±0.25% of I
r
-
-
-
-
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