Toshiba GR200 Series Instruction Manual page 131

Line differential protection ied

Hide thumbs Also See for GR200 Series:

Table of Contents

6F2S1914 (0.49)

Z1S-Mho.Reach

Z1S-Mho.angle

Figure 2.10-18 Z1S MHO element non-directional†

†Note: The tilted line, crossing the originate, instructs the function of the non-directional

Figure 2.10-19 Z1S Quad element non-directional

Function and classification of 6 zones

Table 2.10-2 provides a summary of the zones and characteristics for each element. Z1XS and

Z1XG can be set to cover ≤ 100% of the protected line in their respective zones of protection in

order to provide extended coverage beyond the settings of Z1S and Z1G. On the other hand,

Z5S and Z5G, can be set to protect beyond 100% of the protected line. The element

characteristic used for Z1XS and Z5S is similar and so is the element characteristic for Z1XG

Note that the elements Z2S to Z5S and the Z2G to Z5G can have either the Mho or the

Quad characteristic element, but these elements do not have the 'knee' function.

GRL200 (Soft 033 & 037)

Chapters

Table of Contents