Common Settings For All Steps - ABB RELION 670 Series Applications Manual

1MRK 511 364-UUS A
tResetx : Constant reset time delay in s for step x.
HarmBlockx : This is used to enable block of step x from 2
tPCrvx, tACrvx, tBCrvx, tCCrvx : Parameters for user programmable of inverse time characteristic
curve. The time characteristic equation is according to equation 37:
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EQUATION1722 V1 EN-US
Further description can be found in the technical reference manual.
tPRCrvx, tTRCrvx, tCRCrvx : Parameters for user programmable of inverse reset time characteristic
curve. Further description can be found in the technical reference manual.
8.2.2.2

Common settings for all steps

AngleRCA : Relay characteristic angle given in degree. This angle is defined as shown in figure 52.
The angle is defined positive when the residual current lags the reference voltage (Vpol = 3V
ANSI05000135 V3 EN-US
Figure 52: Relay characteristic angle given in degree
In a normal transmission network a normal value of RCA is about 65°. The setting range is -180° to
+180°.
polMethod : Defines if the directional polarization is from
Application manual
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RCA
Operation
IDirPU
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harmonic restrain function.
V pol = 3V or V
0 2
en 05000135-4- ansi. vsd
Section 8
Current protection
(Equation 37)
M15282-81 v9
or V )
0 2
117