Toshiba GR200 Series Instruction Manual page 422

Impedance setting in Matrix components
Matrix setting is required to set numerical values for both self-impedance (Z aa , Z bb and Z cc )
and mutual-impedance (Z ab , Z bc and Z ca ).
As shown in Figure 2.32-8, when we consider the three-terminal application, user should
key values for each Line_Element. When we consider the two-terminal application, as shown
in Figure 2.32-1, user just keys values for Line1_Element setting.
Setting for Line GJ (Line1_Element)
⚫
For instance, consider setting impedance values with respect to the local line (line GJ) in
Figure 2.32-8, setting targets are represented as the Line1_Element. The self-impedances are
one of the subjects in the matrix setting; hence, user should set the self-impedance values for
setting items—that are designated [FL_1Raa] to [FL_1Rcc] and [FL_1Xaa] to [FL_1Xcc].
Likewise, the mutual-impedances values are set for the settings [FL_1Rab] to [FL_1Rca] and
[FL_1Xab] to [FL_1Xca].
Setting for Line JH (Line2_Element)
⚫
On the other hand, considering setting impedance value of line JH, setting targets are
represented as the Line2_Element. In a manner similar to that of Setting of Line GJ, user
should set the self-impedance values for setting items—that are designated [FL_2Raa] to
[FL_2Rcc] and [FL_2Xaa] to [FL_2Xcc]. Likewise, the mutual-impedances values are set for
the settings [FL_2Rab] to [FL_2Rca] and [FL_2Xab] to [FL_2Xca].
Setting for Line JS (Line3_Element)
⚫
For impedance values of line JH, setting targets are represented as the Line3_Element. In a
manner similar to that of Setting of Line GJ, user should set the self-impedance values for
setting items—that are designated [FL_3Raa] to [FL_3Rcc] and [FL_3Xaa] to [FL_3Xcc].
Likewise, the mutual-impedances values are set for the settings [FL_3Rab] to [FL_3Rca] and
[FL_3Xab] to [FL_3Xca].
Impedance setting in Symmetrical components
Symmetrical setting is available when each self-impedance is identical to the other
(Z aa =Z bb =Z cc ) and each mutual-impedance is identical to the other (Z ab =Z bc =Z ca ); and then,
set Symmetrical for the scheme switch [FL_ImpSet]. The method of how to obtain the
symmetrical values is discussed earlier with Equations (2.32-10) to (2.32-12).
Impedance for Line GJ (Line1_Element setting)
⚫
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6F2S1914 (0.49)
GRL200 (Soft 033 & 037)