8-6
Breaker Monitor, Metering, and Load Profile Functions
Date Code 20010307
SEL-351-0, -1, -2, -3, -4 Instruction Manual
,Q)LJXUHQRWHWKDWWKHEUHDNHUPDLQWHQDQFHFXUYHOHYHOVRIIKRUL]RQWDOO\EHORZVHWSRLQW
.$63&2637KLVLVWKHFORVHRSHQRSHUDWLRQOLPLWRIWKHFLUFXLWEUHDNHU&263
UHJDUGOHVVRILQWHUUXSWHGFXUUHQWYDOXH
$OVRQRWHWKDWWKHEUHDNHUPDLQWHQDQFHFXUYHIDOOVYHUWLFDOO\DERYHVHWSRLQW.$63&263
7KLVLVWKHPD[LPXPLQWHUUXSWHGFXUUHQWOLPLWRIWKHFLUFXLWEUHDNHU.$63 N$,IWKH
LQWHUUXSWHGFXUUHQWLVJUHDWHUWKDQVHWWLQJ.$63WKHLQWHUUXSWHGFXUUHQWLVDFFXPXODWHGDVD
FXUUHQWYDOXHHTXDOWRVHWWLQJ.$63
Operation of SEL
OGIC
Control Equation Breaker Monitor Initiation Setting BKMON
7KH6(/
2*,&
FRQWUROHTXDWLRQEUHDNHUPRQLWRULQLWLDWLRQVHWWLQJ%.021LQ7DEOH
GHWHUPLQHVZKHQWKHEUHDNHUPRQLWRUUHDGVLQFXUUHQWYDOXHV3KDVHV$%DQG&IRUWKHEUHDNHU
PDLQWHQDQFHFXUYHVHH)LJXUHDQGWKHEUHDNHUPRQLWRUDFFXPXODWHGFXUUHQWVWULSV>VHH
%5(
&RPPDQG%UHDNHU0RQLWRU'DWD
LQ
6HFWLRQ6HULDO3RUW&RPPXQLFDWLRQVDQG
&RPPDQGV
@
7KH%.021VHWWLQJORRNVIRUDULVLQJHGJHORJLFDOWRORJLFDOWUDQVLWLRQDVWKHLQGLFDWLRQWR
UHDGLQFXUUHQWYDOXHV7KHDFTXLUHGFXUUHQWYDOXHVDUHWKHQDSSOLHGWRWKHEUHDNHUPDLQWHQDQFH
FXUYHDQGWKHEUHDNHUPRQLWRUDFFXPXODWHGFXUUHQWVWULSVVHHUHIHUHQFHVLQSUHYLRXVSDUDJUDSK
,QWKHIDFWRU\GHIDXOWVHWWLQJVWKH6(/
2*,&
FRQWUROHTXDWLRQEUHDNHUPRQLWRULQLWLDWLRQVHWWLQJLV
VHW
%.021 75,3
75,3LVWKHORJLFRXWSXWRI)LJXUH
5HIHUWR)LJXUH:KHQ%.021DVVHUWV5HOD\:RUGELW75,3JRHVIURPORJLFDOWR
ORJLFDOWKHEUHDNHUPRQLWRUUHDGVLQWKHFXUUHQWYDOXHVDQGDSSOLHVWKHPWRWKHEUHDNHUPRQLWRU
PDLQWHQDQFHFXUYHDQGWKHEUHDNHUPRQLWRUDFFXPXODWHGFXUUHQWVWULSV
$VGHWDLOHGLQ)LJXUHWKHEUHDNHUPRQLWRUDFWXDOO\UHDGVLQWKHFXUUHQWYDOXHVF\FOHVDIWHU
WKHDVVHUWLRQRI%.0217KLVKHOSVHVSHFLDOO\LIDQLQVWDQWDQHRXVWULSRFFXUV7KH
LQVWDQWDQHRXVHOHPHQWWULSVZKHQWKHIDXOWFXUUHQWUHDFKHVLWVSLFNXSVHWWLQJOHYHO7KHIDXOW
FXUUHQWPD\VWLOOEH³FOLPELQJ´WRLWVIXOOYDOXHDQGWKHQOHYHOVRII7KHF\FOHGHOD\RQ
UHDGLQJLQWKHFXUUHQWYDOXHVDOORZVWLPHIRUWKHIDXOWFXUUHQWWROHYHORII
)LJXUH2SHUDWLRQRI6(/
2*,&
&RQWURO(TXDWLRQ%UHDNHU0RQLWRU,QLWLDWLRQ6HWWLQJ
6HH)LJXUHDQGDFFRPSDQ\LQJWH[WIRUPRUHLQIRUPDWLRQRQVHWWLQJ%.0217KHRSHUDWLRQ
RIWKHEUHDNHUPRQLWRUPDLQWHQDQFHFXUYHZKHQQHZFXUUHQWYDOXHVDUHUHDGLQLVH[SODLQHGLQ
WKHIROORZLQJH[DPSOH