G-2 Setting SELOGIC
®
Control Equations Date Code 20010307
SEL-351A Instruction Manual
,IWKHPD[LPXPSKDVHFXUUHQWLVDERYHWKHOHYHORIWKHSKDVHWLPHRYHUFXUUHQWSLFNXSVHWWLQJ
335HOD\:RUGELW3LVLQWKHIROORZLQJVWDWH
3 ORJLFDO
,IWKHPD[LPXPSKDVHFXUUHQWLVDERYH
WKHOHYHORIWKHSKDVHWLPHRYHUFXUUHQWSLFNXSVHWWLQJ
33SKDVHWLPHRYHUFXUUHQWHOHPHQW37LVHLWKHUWLPLQJRQLWVFXUYHRULVDOUHDG\WLPHGRXW
Phase Time-Overcurrent Element 51PT Time-Out Indication
,ISKDVHWLPHRYHUFXUUHQWHOHPHQW37LVQRWWLPHGRXW
RQLWVFXUYH5HOD\:RUGELW37LVLQ
WKHIROORZLQJVWDWH
37 ORJLFDO
,ISKDVHWLPHRYHUFXUUHQWHOHPHQW37LVWLPHGRXW
RQLWVFXUYH5HOD\:RUGELW37LVLQWKH
IROORZLQJVWDWH
37 ORJLFDO
Phase Time-Overcurrent Element 51PT Reset Indication
,ISKDVHWLPHRYHUFXUUHQWHOHPHQW37LVQRWIXOO\UHVHW
5HOD\:RUGELW35LVLQWKH
IROORZLQJVWDWH
35 ORJLFDO
,ISKDVHWLPHRYHUFXUUHQWHOHPHQW37LVIXOO\UHVHW
5HOD\:RUGELW35LVLQWKHIROORZLQJ
VWDWH
35 ORJLFDO
,ISKDVHWLPHRYHUFXUUHQWHOHPHQW37LVQRWIXOO\UHVHW
WKHHOHPHQWLVHLWKHU
7LPLQJRQLWVFXUYH
$OUHDG\WLPHGRXW
,VWLPLQJWRUHVHWRQHF\FOHUHVHWRUHOHFWURPHFKDQLFDOHPXODWLRQ²VHHVHWWLQJ356
Relay Word Bit Application Examples—Phase Time-Overcurrent Element 51PT
&RPPRQXVHVIRU5HOD\:RUGELWV337DQG35
3 WHVWLQJHJDVVLJQWRDQRXWSXWFRQWDFWIRUSLFNXSWHVWLQJ
WULSXQODWFKORJLFVHH6(/
2*,&FRQWUROHTXDWLRQXQODWFKWULSVHWWLQJ8/75
H[DPSOHODWHULQWKLVVHFWLRQ
37 WULSORJLFVHH6(/
2*,&FRQWUROHTXDWLRQWULSVHWWLQJ75H[DPSOHODWHULQWKLV
VHFWLRQ
35 XVHGLQWHVWLQJHJDVVLJQWRDQRXWSXWFRQWDFWIRUUHVHWLQGLFDWLRQ