ABB RET670 - Verifying the Settings

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