Toshiba GR200 Series - 2.33 Trip circuit (TRC)

6F2S1914 (0.49)
GRL200 (Soft 033 & 037)
- 405 -
Trip circuit (TRC)
The trip circuit (TRC) scheme issues trip commands to the circuit breakers (CB#1, CB#2) when
it receives trip signals from the protection functions (which are identified with ‘FC1’, ‘FC2’, etc.
to represent DIFL, DIFGL relay, etc.). The TRC function is able to receive an alternate trip
signal generated by an additional relay external to the IED using PLC connection points via
the binary IO module (BIO)†. If the additional relay can provide a check-signal to condition
tripping, increased reliability can be achieved within the IED when using the check-signal as
an input to the TRC logic (i.e., fail-safe operation is realized by the operation of the additional
relay).
─────────────────────────────────────────────────────────────────
Note: The TRC function is feasible in entire models, which can be enumerated in the IED
ordering number. For more information, see Appendix: Ordering .
Table 2.33-1 Comparative table in respective ordering numbers
feature
Ordering No. at “G&T”
33
37
–
TRC
✓
✓
✓: Applicable NA: Not applicable