Toshiba GRL100-701B Instruction Manual page 274

UOP tripping
Set the scheme switch [CRSCM] to "UOP", [WKIT] and [ECHO] to "Off".
De-energize the binary input BIn to simulate interruption of a trip block signal reception and
apply a zone 2 fault.
Check that instantaneous single-phase or three-phase tripping is performed depending on the
fault types and setting of autoreclose mode selection switch [ARC-M].
Set [WKIT] and [ECHO] to "On" and apply a weak-infeed fault. Check that instantaneous
tripping is performed.
Energize the binary input BIn to simulate trip block signal reception and apply a zone 2 fault.
Check that UOP tripping does not occur.
Check that binary output relay BO13 operates in the normal condition.
Apply a zone 2 fault, and check that the BO13 resets.
Set the scheme switch [ECHO] to "On".
De-energize the binary inputs BI1, BI2 and BI3 to simulate the breaker being open.
Check that binary output relay BO13 resets when the binary input BIn is de-energized.
Apply a zone 4 fault (reverse fault) while the binary inputs BI1, BI2 and BI3 are energized, and
check that the binary output relay BO13 remains operated when the binary input BIn is
de-energized.
Check that the indications and recordings are correct.
BOP tripping
Set the scheme switch [CRSCM] to "BOP".
Check that the binary input BIn is de-energized and apply a zone 2 fault.
Check that instantaneous single-phase or three-phase tripping is performed depending on the
fault types and setting of autoreclose mode selection switch [ARC-M].
Energize the binary input BIn to simulate trip block signal reception and apply a zone 2 fault.
Check that BOP tripping does not occur.
Apply a zone 2 fault, and check that binary output relay BO13 does not operate. Apply a zone 4
fault (reverse fault), and check that BO13 operates.
Check that the indications and recordings are correct.
SOTF-OC and SOTF-Z tripping
SOTF tripping is carried out by distance measuring element Z1 to ZR operation or overcurrent
element OCH operation. Z1 to ZR can perform the SOTF tripping by setting.
The SOTF function is activated when the breaker has been open for timer TSOTF (0 – 300s)
setting and active for an additional 500ms after the breaker is closed.
The SOTF function is checked as follows:
• Set the scheme switch [SOTF-OC] to "On" and [SOTF-Z ∗ ] to "Off".
De-energize the binary input signals BI1 to BI3 (terminal number A4, B4 and A5 of terminal
block TB4) for more than TSOTF (0 – 300s) setting.
• Energize the binary input signals and apply a zone 1 fault at the same time.
Check that the operating time is within 1-1.5 cycle.
• Set the scheme switch [SOTF-OC] to "Off" and [SOTF-Z ∗ ] to "On" and repeat the above.
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