1MRK 504 088-UEN C
13.5.5.1
Installation and commissioning manual
X1OutFw
X1InFw
RLdOutRv
2
RLdInRv
X1OutRv
IEC09000226 V1 EN
Figure 58:
Operating principle and characteristic of the power swing detection
function (settings parameters in italic)
Where:
RLdOutFw · kLdRFw
RLdInFw =
RLdOutRv · kLdRRv
RLdInRv =
X1InFw + (RLdOutFw - RLdInFw)
X1OutFw =
X1InRv + (RLdOutFw - RLdInFw)
X1OutRv =
Verifying the settings
Preconditions
The following output signal shall be configured to binary output available: ZOUT,
measured impedance within outer impedance boundary.
Verifying settings by secondary injection
ZL
X
3
j
X1InRv
4
Section 13
j
R
1
RLdOutFw
RLdInFw
IEC09000226_1_en.vsd
129