Toshiba GR200 Series Instruction Manual page 83

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6F2S1915 (0.46)

You also should place a set of a set of Block for setting [ZCSR-VTFBlk] because the operation

of the ZCSR should stop when the VTF is detected. Conversely, you should place a set of Non

for the setting were you to require the ZCSR operation keeping in the VTF detection.

Make sure that the ZCSF does not supply the offset feature while the ZCSR supplies the offset

feature. The settings for the offset element are fixed at 7.5 Ω for 1 A rating or 1.5 Ω for 5 A

rating. The fix offset makes the ZCSR operate constantly even when the three-phase fault

appears close in the reverse side. However, the ZCSF blocks its operation in the three-phase

fault because the ZCSR runs together with the ZCSF. As a result, the command protection can

avoid improper operations.

ZCSF-Mho.Angle

ZCSF-Mho.Reach

ZCSF-R.Angle

ZCSF-X.Reach

ZCSR-R.Reach

ZCSF-R.Reach

ZCSR-R.Angle

ZCSR-X.Reach

ZCSR-Mho.Reach

ZCSB-Mho.Angle

Figure 2.1-33 ZCSF and ZCSR in Mho characteristic

GRZ200 (Soft 031 & 032)