Schweitzer Engineering Laboratories SEL-352-1 - Page 81

Date Code 20010731 Breaker Logic 3-9
SEL-352-1, -2 Instruction Manual
%UHDNHU 6XFFHVVIXOO\&OHDUV
)7$
75,3$77$
77GR
77$'
)DXOW2FFXUV
/)$5
0D[LPXP%UHDNHU
2SHUDWH7LPH
/)$6
/)$4)&$
)&$'
)&SX
%UHDNHU
2SHUDWH7LPH
)7$
'URSRXW7 LPH
6DIHW\
0DUJLQ7LPH
)%)
/)$6
)7$
75,3$77$
/)$5
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2SHUDWH7LPH
/)$4)&$
)%)
77$'
77GR
)&$'
)&SX
%UHDNHU
2SHUDWH7LPH
)7$
'URSRXW7 LPH
6DIHW\
0DUJLQ7LPH
%UHDNH U)D LOV
)DXOW2FFXUV
3URWHFWLYH5HOD\
2SHUDWH7LPH
3URWHFWLYH5HOD\
2SHUDWH7LPH
':*

0
D
$GMDFHQW%UHDNHU
2SHUDWLQ J7LPH
Figure 3.7: Scheme 1 Breaker Failure Timing