Date Code 20011205
Close Logic
6-1
SEL-311A Instruction Manual
SECTION 6: CLOSE LOGIC
C
LOSE
L
OGIC
This section describes the final logic that controls the close output contact (e.g., OUT103 =
CLOSE). This output contact closes the circuit breaker for other close conditions (e.g., manual
close initiation via serial port or optoisolated inputs).
The close logic in Figure 6.1 provides flexible circuit breaker closing with SEL
OGIC
control
equation settings:
52A (breaker
status)
CL
(close conditions, other than automatic reclosing)
ULCL
(unlatch close conditions, other than circuit breaker status, or close failure)
and setting:
CFD
(Close Failure Time)
See the settings sheet in
Section 9: Setting the Relay
for setting ranges.
Figure 6.1: Close Logic
Summary of Contents for SEL-311A
Page 6: ......
Page 8: ......
Page 10: ......
Page 24: ......
Page 40: ......
Page 66: ......
Page 96: ......
Page 98: ......
Page 112: ......
Page 114: ......
Page 122: ......
Page 170: ......
Page 202: ......
Page 204: ......
Page 246: ......
Page 248: ......
Page 286: ......
Page 290: ......
Page 304: ......
Page 306: ......
Page 334: ......
Page 384: ......
Page 386: ......
Page 394: ......
Page 398: ......
Page 402: ......
Page 404: ......
Page 410: ......
Page 412: ......
Page 426: ......
Page 444: ......
Page 460: ......
Page 474: ......