Toshiba GR200 Series - 2.34 Autoreclose (ARC)

6F2S1914 (0.49)
GRL200 (Soft 033 & 037)
- 420 -
Autoreclose (ARC)
The basic objective of auto-reclosing is to restore automatically the transmission line back into
service, after being tripped by line protection relays, without depending on the operator action.
The use of auto-reclosing will improve the system stability and reliability. The choice of the
auto-reclosing type, such as, one or more reclosing shots, high speed or delayed, single-phase
or multi-phase depends on the characteristics of the transmission and protective system
together with the utility practice. The suitability of a particular auto-reclosing scheme may
also be established by conducting a transient analysis study of the interconnected electrical
network.
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Note: Several IED models do not have auto-reclosing features. To determine whether the
features are implemented in the IED or not, locate the IED ordering number; and check the
order number at “G&T position” referring to the comparison table below. For more information,
see Appendix: Ordering .
Table 2.34-1 Comparative table in respective ordering numbers
feature
Ordering No. at “G&T”
33
37
ARC
Auto-reclosing
✓
✓
✓: Applicable NA: Not applicable