Toshiba GR200 Series Instruction Manual page 339

Single-end fault locator (FL-Z)
The function of the single-end fault locator (FL) is to determine the location of faults that occur
on a transmission line with a high degree of reliability. Determination of the location of faults
provides a useful contribution to the recovery of circuits in the event of power system failures.
Fault location is provided by the FL function; computation is based on impedance-based
algorithms using information at the local end of the line only.
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Note: The implementation of particular features is dependent upon the selection of
hardware and the configuration of functions. Several IED models do not support certain
features. To determine whether a particular feature has been implemented within an IED,
identify the IED ordering number; and check the order number for the "G&T position" whilst
referring to the comparison table below. For more information, see
Table 2.23-1 Comparative table in respective ordering numbers
✓: Applicable
Sec. Feature
– Main features
NA: Not applicable
Ordering No. at "G&T"
31 32
✓ ✓
- 318 -
6F2S1915 (0.46)
(2.738a)
Appendix: Ordering
.
GRZ200 (Soft 031 & 032)