SEMOD173350-2 v16
Table 38. Sensitive directional residual overcurrent and power protection SDEPSDE
Function
Range or value
Accuracy
Operate level for 3I
0
·cos
j
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
At low setting:
(0.25-1.00)% of I
r
: ±0.05% of I
r
(1.00-5.00)% of I
r
: ±0.1% of I
r
Operate level for ·3I
0
·3U
0
cos
j
directional residual power
(0.25-200.00)% of SBase
±2.0% of S
r
at S
£
S
r
±2.0% of S at S > S
r
At low setting:
(0.25-5.00)% of SBase
±
10% of set value
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
At low setting:
(0.25-1.00)% of I
r
: ±0.05% of I
r
(1.00-5.00)% of I
r
: ±0.1% of 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
At low setting < 5% of I
r
:
±0.1% of 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
At low setting:
(0.25-1.00)% of I
r
: ±0.05% of I
r
(1.00-5.00)% of I
r
: ±0.1% of 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
Reset ratio
> 95%
-
Timers
(0.000-60.000) s
±0.5% ±25 ms
Inverse characteristics, see Table
,
Table
15 curve types
ANSI/IEEE C37.112
IEC 60255–151
±
3.0% or
±
90 ms
0.10 ≤ k ≤ 3.00
1.5 x I
set
≤ I ≤ 20 x I
set
Relay characteristic angle RCA
(-179 to 180) degrees
±
2.0 degrees
Relay open angle ROA
(0-90) degrees
±
2.0 degrees
Operate time, non-directional residual
over current
60 ms typically at 0 to 2 x I
set
60 ms typically at 0 to 2 x I
set
Reset time, non-directional residual over
current
65 ms typically at 2 x I
set
to 0
65 ms typically at 2 x I
set
to 0
Line distance protection REL650
1MRK 506 384-BEN H
Version 2.2
Hitachi Power Grids
61
© 2017 - 2021 Hitachi Power Grids. All rights reserved
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