Date Code 20010307
Close and Reclose Logic
6-11
SEL-351-0, -1, -2, -3, -4 Instruction Manual
SEL-351(1) Relay
%HIRUHDOORZLQJFLUFXLWEUHDNHUWREHUHFORVHGDIWHUDQRSHQLQWHUYDOWLPHRXWWKH
6(/5HOD\FKHFNVWKDW%XVYROWDJHLVKRWDQGWKHWUDQVPLVVLRQOLQHYROWDJHLVGHDG7KLV
UHTXLUHVUHFORVHVXSHUYLVLRQVHWWLQJV
&/6' F\FOHV
RQO\RQHFKHFN
&/6 36
ZKHUH
3
DOOWKUHH%XVSKDVHYROWDJHV9$9%DQG9&DUHKRW
6
PRQLWRUHGVLQJOHSKDVHWUDQVPLVVLRQOLQHYROWDJHFKDQQHO96LVGHDG
SEL-351(2) Relay
7KH6(/5HOD\FKHFNVWKDW%XVYROWDJHLVKRWWKHWUDQVPLVVLRQOLQHYROWDJHLVKRWDQG
LQV\QFKURQLVPDIWHUWKHUHFORVLQJUHOD\RSHQLQWHUYDOWLPHVRXWEHIRUHDOORZLQJFLUFXLWEUHDNHU
WREHUHFORVHG7KLVUHTXLUHVUHFORVHVXSHUYLVLRQVHWWLQJV
&/6' F\FOHV
RQO\RQHFKHFN
&/6 $
ZKHUH
$
VHOHFWHG%XVSKDVHYROWDJH9$9%RU9&LVLQV\QFKURQLVPZLWK
PRQLWRUHGVLQJOHSKDVHWUDQVPLVVLRQOLQHYROWDJHFKDQQHO96DQGERWKDUHKRW
Other Setting Considerations for SEL-351(1) and SEL-351(2) Relays
5HIHUWR
6NLS6KRWDQG6WDOO2SHQ,QWHUYDO7LPLQJ6HWWLQJV6.3DQG67/UHVSHFWLYHO\
LQ
WKHIROORZLQJ
5HFORVLQJ5HOD\
VXEVHFWLRQ
6(/
2*,&
FRQWUROHTXDWLRQVHWWLQJ67/VWDOOVRSHQLQWHUYDOWLPLQJLILWDVVHUWVWRORJLFDO,I
VHWWLQJ67/LVGHDVVHUWHGWRORJLFDORSHQLQWHUYDOWLPLQJFDQFRQWLQXH
7KH6(/5HOD\KDVQRLQWHQWLRQDORSHQLQWHUYDOWLPLQJVWDOOFRQGLWLRQFLUFXLWEUHDNHU
FORVHVILUVWDIWHUDWUDQVPLVVLRQOLQHIDXOW
67/
QXPHUDO
7KH6(/5HOD\VWDUWVRSHQLQWHUYDOWLPLQJDIWHUFLUFXLWEUHDNHUDWWKHUHPRWHHQGKDV
UHHQHUJL]HGWKHOLQH7KH6(/5HOD\KDVWRVHH%XVKRWWUDQVPLVVLRQOLQHKRWDQGLQ
V\QFKURQLVPDFURVVRSHQFLUFXLWEUHDNHUIRURSHQLQWHUYDOWLPLQJWREHJLQ7KXV
6(/5HOD\RSHQLQWHUYDOWLPLQJLVVWDOOHGZKHQWKHWUDQVPLVVLRQOLQHYROWDJHDQG%XV
YROWDJHDUHQRWLQV\QFKURQLVPDFURVVRSHQFLUFXLWEUHDNHU
67/ $
> 127$@
1RWH
$WUDQVLHQWV\QFKURQLVPFKHFNFRQGLWLRQDFURVVRSHQFLUFXLWEUHDNHUFRXOGSRVVLEO\
RFFXULIFLUFXLWEUHDNHUUHFORVHVLQWRDIDXOWRQRQHSKDVHRIWKHWUDQVPLVVLRQOLQH
7KHRWKHUWZRXQIDXOWHGSKDVHVZRXOGEHEULHIO\HQHUJL]HGXQWLOFLUFXLWEUHDNHULV
WULSSHGDJDLQ,IFKDQQHO96RIWKH6(/5HOD\LVFRQQHFWHGWRRQHRIWKHVHEULHIO\