ABB REG650 User Manual

R
jX
ArgLd
ArgLd
RLdOutFw
RLdInFw
R1FInFwR1FInRv
RLdInRv
RLdOutRv
X1InFw
X1OutFw
ZL
R1LIn
X1InRv
X1OutRv
IEC09000222_1_en.vsd
DRv
DRv
DRv
DRv
DRv
DFw
DFw
DFw
DFw
DFw
DFw
j
j
j
IEC09000222 V1 EN
Figure 62: Operating characteristic for ZMRPSB function (setting parameters in
italic)
The impedance measurement within ZMRPSB function is performed by solving
equation 34 and equation 35 (n = 1, 2, 3 for each corresponding phase L1, L2 and L3).
R
set
Re
n
n
I
U
L
L
£
÷
÷
ø
ö
ç
ç
è
æ
EQUATION1183 V2 EN
(Equation 34)
Im
n
n
X
set
I
U
L
L
£
÷
÷
ø
ö
ç
ç
è
æ
EQUATION1184 V2 EN (Equation 35)
The R
set
and X
set
are R and X boundaries.
7.1.6.1 Resistive reach in forward direction
To avoid load encroachment, the resistive reach is limited in forward direction by
setting the parameter RLdOutFw which is the outer resistive load boundary value
while the inner resistive boundary is calculated according to equation 36.
Section 7 1MRK 502 048-UEN A
Impedance protection
142
Technical manual

ABB REG650 Specifications

General

Brand	ABB
Model	REG650
Category	Protection Device
Language	English