OpINNonDir> = On
&
OpUN> = On
&
t
tUN
OpMode = 3I0Cosfi
&
OpMode = 3I0 and fi
&
OpMode = 3I03U0Cosfi
&
RCADir
RCAComp
ROADir
&
DirMode = Forward
DirMode = Reverse
³
1
&
&
&
³
1
t
tDef
t
tDef
³
1
STDIRIN
TRDIRIN
STNDIN
TRNDIN
STUN
TRUN
STFW
STRV
t
S
N
TimeChar
INNonDir>
&
Direction
Detection
Logic
t
IN
UN>
INCosPhi>
INDir>
SN>
INRel>
UNRel>
IEC06000653.vsd
IEC06000653 V4 EN-US
Figure 109:
Simplified logical diagram of the sensitive earth fault current protection
7.6.8
Technical data
SEMOD173352-1 v1
SEMOD173350-2 v16
Table 107:
SDEPSDE technical data
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
Operate level for ·3I
0
·3U
0
cos
j
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
Table continues on next page
1MRK 506 382-UEN A
Section 7
Current protection
Line distance protection REL650 2.2 IEC
229
Technical manual
Summary of Contents for RELION 650 SERIES
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