Date Code 20010215
Applications
5-7
SEL-321-5 Instruction Manual
Zone 3 Setting
7KHJRYHUQLQJIDXOWFRQGLWLRQIRUWKH=RQHHOHPHQWVLVDSKDVHWRSKDVHIDXOWDW%XV$ZLWK
/LQHRUUHPRYHGIURPVHUYLFH7KHIDXOWVWXG\VKRZVWKDWWKHORZHVWSKDVHWRSKDVHIDXOW
FXUUHQWHTXDOV$SULPDU\IRUWKLVIDXOW7RHQVXUHWKDWWKH33HOHPHQWSLFNVXSIRUWKH
FDOFXODWHGIDXOWFXUUHQWVHOHFWVRPHFXUUHQWYDOXHEHORZ$,QWKLVH[DPSOHWKHYDOXH
VHOHFWHGIRUWKH33VHWWLQJLV$DSSUR[LPDWHO\RIWKHPLQLPXPIDXOWFXUUHQW
Ground Distance Overcurrent Supervision Setting Criteria
7KHJURXQGGLVWDQFHHOHPHQWVDUHVXSHUYLVHGE\SKDVHDQGJURXQGIDXOWGHWHFWRURYHUFXUUHQW
HOHPHQWV(DFK]RQHKDVDQLQGHSHQGHQWSKDVHDQGJURXQGIDXOWGHWHFWRURYHUFXUUHQWHOHPHQW
%HIRUHDQ\JURXQGGLVWDQFHHOHPHQWFDQSLFNXSWKHUHOD\PXVWGHWHFWSKDVHDQGUHVLGXDOFXUUHQW
JUHDWHUWKDQWKH/DQG*VHWWLQJVUHVSHFWLYHO\&DOFXODWHWKHSKDVHDQGUHVLGXDOFXUUHQWIRU
WKHPRVWUHPRWHJURXQGIDXOWRUKLJKHVWH[SHFWHGJURXQGIDXOWUHVLVWDQFHLQZKLFKWKHGLVWDQFH
HOHPHQW]RQHPXVWRSHUDWH
Zone 1 Setting
)RUWKHUHOD\DW%UHDNHULQWKHV\VWHPVKRZQLQ)LJXUHWKHPLQLPXPIDXOWFRQGLWLRQIRUWKH
=RQHHOHPHQWLVDSKDVHJURXQGIDXOWDW%XV&ZLWK/LQHRUUHPRYHGIURPVHUYLFH7KH
IDXOWVWXG\VKRZVWKDWIRUWKLVIDXOW,
$
$SULPDU\DQG,
5
$SULPDU\7RHQVXUHWKDW
WKH/DQG*HOHPHQWVSLFNXSIRUWKHFDOFXODWHGIDXOWFXUUHQWVHOHFWVRPHFXUUHQWYDOXH
EHORZWKHFDOFXODWHGSKDVHDQGUHVLGXDOFXUUHQWPDJQLWXGHV
7KLVYDOXHIRUWKH/VHWWLQJPD\EHEHORZORDG,QWKLVH[DPSOHWKHYDOXHVHOHFWHGIRUWKH
/VHWWLQJLV$DSSUR[LPDWHO\RIWKHPLQLPXPIDXOWFXUUHQW7KHYDOXHVHOHFWHGIRU
WKH*VHWWLQJLV$DSSUR[LPDWHO\RIWKHPLQLPXPIDXOWFXUUHQW
Zone 2 Setting
7KHPLQLPXPIDXOWFRQGLWLRQIRUWKH=RQHHOHPHQWLVDSKDVHJURXQGIDXOWDW%XV'ZLWK/LQH
RUUHPRYHGIURPVHUYLFH7KHIDXOWVWXG\VKRZVWKDWIRUWKLVIDXOW,
$
$SULPDU\DQG
,
5
$SULPDU\7RHQVXUHWKDWWKH/DQG*HOHPHQWVSLFNXSIRUWKHFDOFXODWHGIDXOW
FXUUHQWVHOHFWVRPHFXUUHQWYDOXHEHORZWKHFDOFXODWHGSKDVHDQGUHVLGXDOFXUUHQW7KLVVHWWLQJ
DFFRXQWVIRUDUFUHVLVWDQFHDQGHUURUVLQIDXOWVWXG\FDOFXODWLRQV
7KLVYDOXHIRUWKH/VHWWLQJPD\EHEHORZORDG,QWKLVH[DPSOHWKHYDOXHVHOHFWHGIRUWKH
/VHWWLQJLV$DSSUR[LPDWHO\RIWKHPLQLPXPIDXOWFXUUHQW,QWKLVH[DPSOHWKH
YDOXHVHOHFWHGIRUWKH*VHWWLQJLV$DSSUR[LPDWHO\RIWKHPLQLPXPIDXOWFXUUHQW
Zone 3 Setting
7KHPLQLPXPIDXOWFRQGLWLRQIRUWKH=RQHHOHPHQWLVDSKDVHJURXQGIDXOWDW%XV$ZLWK/LQH
RUUHPRYHGIURPVHUYLFH7KHIDXOWVWXG\VKRZVWKDWIRUWKLVIDXOW,
$
$SULPDU\DQG
,
5
$SULPDU\7RHQVXUHWKDWWKH/DQG*HOHPHQWVSLFNXSIRUWKHFDOFXODWHGIDXOW
FXUUHQWVHOHFWVRPHFXUUHQWYDOXHEHORZWKHSKDVHDQGUHVLGXDOFXUUHQWPDJQLWXGHV
Summary of Contents for SEL-321-5
Page 6: ......
Page 8: ......
Page 16: ......
Page 70: ...2 50 Specifications Date Code 20010215 SEL 321 5 Instruction Manual LJXUH RJLF 6 PERO HJHQG ...
Page 88: ...2 68 Specifications Date Code 20010215 SEL 321 5 Instruction Manual LJXUH 9ROWDJH OHPHQW RJLF ...
Page 106: ......
Page 152: ......
Page 158: ......
Page 252: ......
Page 253: ...SEL DIRECTION AND POLARITY CHECK FORM ...
Page 254: ......
Page 255: ...SEL DIRECTION AND POLARITY CHECK FORM ...
Page 256: ......
Page 260: ......
Page 318: ......
Page 322: ......
Page 326: ......
Page 328: ......
Page 330: ......
Page 334: ......
Page 336: ......
Page 338: ......
Page 344: ......