ABB REC650 - Page 125

INNonDir>
UN>
OpMODE=3I0cosfi
IN>
INcosPhi>
OpMODE=3I03U0cosfi
INUNcosPhi>
Phi in RCA +- ROA
OpMODE=3I0 and fi
TimeChar = DefTime
DirMode = Reverse
Reverse
STNDIN
TRNDIN
STUN
TRUN
&
&
&
&
&
&
STARTDIRIN
STFW
STRV
TRDIRIN
&
t
t
&
SN
t
TimeChar = InvTime
1
DirMode = Forward
Forward
IEC09000147-2-en.vsd
IEC09000147 V2 EN
Figure 49: Simplified logical diagram of the sensitive earth-fault current protection
1MRK 511 287-UEN A Section 6
Current protection
119
Technical manual