F-2
Setting Negative-Sequence Overcurrent Elements
Date Code 20010307
SEL-351-0, -1, -2, -3, -4 Instruction Manual
7RDYRLGKDYLQJQHJDWLYHVHTXHQFHWLPHRYHUFXUUHQWHOHPHQW47ZLWKVXFKORZWLPHGLDO
VHWWLQJVWULSIRUWKLVWUDQVLHQWQHJDWLYHVHTXHQFHFXUUHQWFRQGLWLRQPDNHVHWWLQJVVLPLODUWRWKH
IROORZLQJ
6938 F\FOHV
PLQLPXPUHVSRQVHWLPHWUDQVLHQWFRQGLWLRQODVWV
OHVVWKDQF\FOHV
69 4
UXQSLFNXSRIQHJDWLYHVHTXHQFHWLPHRYHUFXUUHQW
HOHPHQW47WKURXJK6(/
2*,&
FRQWUROHTXDWLRQ
YDULDEOHWLPHU69
75 47697
WULSFRQGLWLRQV697LVWKHRXWSXWRIWKH6(/
2*,&
FRQWUROHTXDWLRQYDULDEOHWLPHU69
)LJXUH)0LQLPXP5HVSRQVH7LPH$GGHGWRD1HJDWLYH6HTXHQFH7LPH2YHUFXUUHQW
(OHPHQW47
&RQWLQXHUHDGLQJLQ
&RRUGLQDWLQJ1HJDWLYH6HTXHQFH2YHUFXUUHQW(OHPHQWV
LQWKLVDSSHQGL[
IRUJXLGHOLQHVRQFRRUGLQDWLQJQHJDWLYHVHTXHQFHWLPHRYHUFXUUHQWHOHPHQWVDQGDIROORZLQJ
FRRUGLQDWLRQH[DPSOH
C
OORDINATING
N
EGATIVE
-S
EQUENCE
O
VERCURRENT
E
LEMENTS
7KHIROORZLQJFRRUGLQDWLRQJXLGHOLQHVDQGH[DPSOHDVVXPHWKDWWKHQHJDWLYHVHTXHQFH
RYHUFXUUHQWHOHPHQWVRSHUDWHRQ,
PDJQLWXGHQHJDWLYHVHTXHQFHFXUUHQWDQGWKDWWKHSRZHU
V\VWHPLVUDGLDO7KHQHJDWLYHVHTXHQFHRYHUFXUUHQWHOHPHQWVLQWKH6(/
5HOD\RSHUDWHRQ
,
PDJQLWXGHQHJDWLYHVHTXHQFHFXUUHQW
7KHFRRUGLQDWLRQH[DPSOHLVDJHQHULFH[DPSOHWKDWFDQEHXVHGZLWKDQ\UHOD\FRQWDLQLQJ
QHJDWLYHVHTXHQFHRYHUFXUUHQWHOHPHQWVWKDWRSHUDWHRQ,
PDJQLWXGHQHJDWLYHVHTXHQFHFXUUHQW
7KH6(/
5HOD\FDQEHLQVHUWHGDVWKHIHHGHUUHOD\LQWKLVH[DPSOH1RWHWKDWWKHRYHUFXUUHQW
