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Z1G-R.Reach (in the right)
Z1G-R.Reach (in the left)
Z1S-R.Reach (in the right)
Z1S-R.Reach (in the left)
Figure 2.10-11 Z1S Mho element (Zone1 Mho element with Blinders)
(i)-1-2 Mho with reactance characteristic
Figure 2.10-12 (a) and (b) show Z1S MHO element and Z1G MHO element set with
reactance X.
The ZS with the MHO reactance characteristic should be set using the setting [Z*S-
X.Reach], when the user set On for the scheme switch [Z*S-MhoX.EN]. Similarly, ZG
should be set using the setting [Z*G-X.Reach], when On set for the [Z*G-MhoX.EN].
The ‘knee’ function is configured by using the settings [ZSF-X.GrAngle1] and [ZSF-
X.GrAngle2]. When On-Adapt is set for the scheme switch [ZS-X.GrAngleEN], the
‘knee’ function operates when power flow is detected.
For the Mho characteristic, a composition component (Z-X) is provided. As shown in
Figure 2.10-12 (a), if Z1S is set with reactance components (X), other components can
be set using impedance components (Z).
A directional reactance element ‘DX’ (left line crossing the originate) can be set by the
settings [Z*S-DX.Angle] when On set for the [Z*S-MhoDX.EN]. Similarly, ZG should
be set using the setting [Z*G-DX.Angle] when On set for the [Z*G-MhoDX.EN].
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