Schweitzer Engineering Laboratories SEL-351S - SECTION 5: TRIP AND TARGET LOGIC; TRIP LOGIC

Date Code 20010112 Trip and Target Logic 5-1
SEL-351S Instruction Manual
SECTION 5: TRIP AND TARGET LOGIC
TRIP LOGIC
7KHWULSORJLFLQ)LJXUHSURYLGHVIOH[LEOHWULSSLQJZLWK6(/2*,&

FRQWUROHTXDWLRQVHWWLQJV
75&200 &RPPXQLFDWLRQV$VVLVWHG7ULS&RQGLWLRQV
 6HWWLQJ75&200LVVXSHUYLVHGE\FRPPXQLFDWLRQVDVVLVWHGWULSORJLF
6HH&RPPXQLFDWLRQV$VVLVWHG7ULS/RJLF±*HQHUDO2YHUYLHZODWHULQ
WKLVVHFWLRQIRUPRUHLQIRUPDWLRQRQFRPPXQLFDWLRQVDVVLVWHGWULSSLQJ
'77 'LUHFW7UDQVIHU7ULS&RQGLWLRQV
 1RWHLQ)LJXUHWKDWVHWWLQJ'77LVXQVXSHUYLVHG$Q\HOHPHQWWKDW
DVVHUWVLQVHWWLQJ'77ZLOOFDXVH5HOD\:RUGELW75,3WRDVVHUWWR
ORJLFDO
 $OWKRXJKVHWWLQJ75LVDOVRXQVXSHUYLVHGVHWWLQJ'77LVSURYLGHG
VHSDUDWHIURPVHWWLQJ75IRUWDUJHW/('SXUSRVHV&200WDUJHW/('RQ
WKHIURQWSDQHOLOOXPLQDWHVZKHQ'77DVVHUWVWRORJLFDOVHH&200
WDUJHW/('GLVFXVVLRQLQWKH)URQW3DQHO7DUJHW/('VVXEVHFWLRQDWWKH
HQGRIWKLVVHFWLRQ
 $W\SLFDOVHWWLQJIRU'77LV
  '77 ,1
 ZKHUHLQSXW,1LVFRQQHFWHGWRWKHRXWSXWRIGLUHFWWUDQVIHUWULS
FRPPXQLFDWLRQVHTXLSPHQW
 6HWWLQJ'77LVDOVRXVHGIRU'LUHFW8QGHUUHDFKLQJ7UDQVIHU7ULS'877
VFKHPHV
75627) 6ZLWFK2QWR)DXOW7ULS&RQGLWLRQV
 6HWWLQJ75627)LVVXSHUYLVHGE\WKHVZLWFKRQWRIDXOWFRQGLWLRQ627)(
6HH6ZLWFK2QWR)DXOW627)7ULS/RJLFRQSDJHIRUPRUH
LQIRUPDWLRQRQVZLWFKRQWRIDXOWORJLF
75 2WKHU7ULS&RQGLWLRQV
 6HWWLQJ75LVWKH6(/
2*,&FRQWUROHTXDWLRQWULSVHWWLQJPRVWRIWHQXVHGLI
WULSSLQJGRHVQRWLQYROYHFRPPXQLFDWLRQVDVVLVWHGVHWWLQJV75&200
DQG'77RUVZLWFKRQWRIDXOWVHWWLQJ75627)WULSORJLF
 1RWHLQ)LJXUHWKDWVHWWLQJ75LVXQVXSHUYLVHG$Q\HOHPHQWWKDW
DVVHUWVLQVHWWLQJ75ZLOOFDXVH5HOD\:RUGELW75,3WRDVVHUWWRORJLFDO
8/75 8QODWFK7ULS&RQGLWLRQV
7'85' 0LQLPXP7ULS'XUDWLRQ7LPH
 7KLVWLPHUHVWDEOLVKHVWKHPLQLPXP
WLPHGXUDWLRQIRUZKLFKWKH75,3
5HOD\:RUGELWDVVHUWV7KLVLVULVLQJHGJHLQLWLDWHGWLPHU7KHVHWWDEOH
UDQJHIRUWKLVWLPHULVF\FOHV6HH)LJXUH
0RUHWKDQRQHWULSVHWWLQJRUDOOIRXUWULSVHWWLQJV75&200'7775627)DQG75FDQEH
VHW)RUH[DPSOHLQDFRPPXQLFDWLRQVDVVLVWHGWULSVFKHPH75&200LVVHWZLWKGLUHFWLRQ