SEMOD173350-2 v16
Table 62. Sensitive directional residual overcurrent and power protection SDEPSDE
Function Range or value Accuracy
Operate level for 3I
0
·cosj directional
residual overcurrent
(0.25-200.00)% of IBase
±1.0% of I
r
at I £ I
r
±1.0% of I at I > I
r
Operate level for ·3I
0
·3U
0
cosj directional
residual power
(0.25-200.00)% of SBase
±1.0% of S
r
at S £ S
r
±1.0% of S at S > S
r
Operate level for 3I
0
and j residual
overcurrent
(0.25-200.00)% of IBase
±1.0% of I
r
at £ I
r
±1.0% of I at I > I
r
Operate level for non-directional
overcurrent
(1.00-400.00)% of IBase
±1.0% of I
r
at I £ I
r
±1.0% of I at I > I
r
Operate level for non-directional residual
overvoltage
(1.00-200.00)% of UBase
±0.5% of U
r
at U £ U
r
±0.5% of U at U > U
r
Residual release current for all directional
modes
(0.25-200.00)% of IBase
±1.0% of I
r
at I £ I
r
±1.0% of I at I > I
r
Residual release voltage for all directional
modes
(1.00-300.00)% of UBase
±0.5% of U
r
at U £ U
r
±0.5% of U at U > U
r
Operate time for non-directional residual
overcurrent at 0 to 2 x I
set
Min. = 40 ms
Max. = 65 ms
Reset time for non-directional residual
overcurrent at 2 x I
set
to 0
Min. = 40 ms
Max. = 65 ms
Operate time for directional residual
overcurrent at 0 to 2 x I
set
Min. = 110 ms
Max. = 160 ms
Reset time for directional residual
overcurrent at 2 x I
set
to 0
Min. = 20 ms
Max. = 60 ms
Independent time delay for non-
directional residual overvoltage at 0.8 x
U
set
to 1.2 x U
set
(0.000 – 60.000) s ±0.2% or ± 75 ms whichever is greater
Independent time delay for non-
directional residual overcurrent at 0 to 2 x
I
set
(0.000 – 60.000) s ±0.2% or ± 75 ms whichever is greater
Independent time delay for directional
residual overcurrent at 0 to 2 x I
set
(0.000 – 60.000) s ±0.2% or ± 170 ms whichever is greater
Inverse characteristics, see table 204,
Table 205 and Table 206
16 curve types See Table 204, Table 205 and Table 206
Relay characteristic angle (RCADir) (-179 to 180) degrees ±2.0 degrees
Relay operate angle (ROADir) (0 to 90) degrees ±2.0 degrees
Line differential protection RED670
1MRK 505 379-BEN N
Hitachi Power Grids 99
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