Table 53. 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
lBase
±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
lBase
±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
lBase
±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
lBase
±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 Iset
Min. = 40 ms
Max. = 65 ms
Reset time for non-directional
residual overcurrent at 2 to 0 x
Iset
Min. = 40 ms
Max. = 65 ms
Operate time for directional
residual overcurrent at 0 to 2 x
Iset
Min. = 110 ms
Max. = 160 ms
Reset time for directional
residual overcurrent at 2 to 0 x
Iset
Min. = 20 ms
Max. = 60 ms
Independent time delay for
non-directional residual
overvoltage at 0.8 to 1.2 x Uset
(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 Iset
(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 Iset
(0.000 – 60.000) s ±0.2% or ± 170 ms whichever is
greater
Inverse characteristics, see
table "", table "" and table ""
16 curve types See table "", table "" and table ""
Relay characteristic angle
(RCADir)
(-179 to 180) degrees ±2.0 degrees
Relay operate angle (ROADir) (0 to 90) degrees ±2.0 degrees
1MRK 505 346-BEN -
Line differential protection RED670 2.1 IEC
Product version: 2.1
ABB 71
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