ABB REG670 - Technical Data

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
Figure 181: Simplified logical diagram of the sensitive earth fault current protection
8.6.8 Technical data
Table 193: SDEPSDE technical data
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
Table continues on next page
1MRK502052-UEN B Section 8
Current protection
399
Technical manual