GE 750 Instruction Manual page 282

S7 CONTROL
5.8.8 Autoreclose (760 only)

AUTORECLOSE
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PATH: SETPOINTS S7 CONTROL
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MESSAGE
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The 760 has a very flexible autoreclose scheme that allows for the many different control
strategies typical of utility applications. Up to four reclosure 'shots' are possible with
separately programmable 'dead times' for each shot. Reclosure can be initiated from any
760 overcurrent element or from external sources. Between each shot, overcurrent
protection setpoints can be adjusted in order to co-ordinate with downstream devices. To
prevent breaker wear, a 'current supervision' feature can reduce the number of shots when
the fault current is high. A 'zone co-ordination' feature can maintain protection
coordination with downstream reclosers. Logic inputs are available for blocking and
disabling the scheme.
Front panel LEDs indicate the present state of the autoreclose scheme. Note that display
message group
A1 STATUS
present state of the autoreclose scheme.
• Reclosure Enabled: The scheme is enabled and may reclose if a trip occurs.
• Reclosure Disabled: The scheme is not enabled and will not reclose until the
scheme is enabled.
• Reclosure In Progress: An autoreclosure has been initiated but the breaker has not
yet been closed.
• Reclosure Lockout: The scheme has gone to 'lockout' and must be reset before
further reclosures are permitted.
The scheme is considered enabled when all of the following five conditions are true:
1. The
AUTORECLOSE FUNCTION

AUTORECLOSE
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SCHEME SETUP
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RATE
SUPERVISION
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CURRENT
SUPERVISION
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ZONE
COORDINATION
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RECLOSURE 1
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RECLOSURE 2
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RECLOSURE 3
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RECLOSURE 4
can also be accessed to determine the

AUTORECLOSE
setpoint is set to "Enabled".
750 FEEDER MANAGEMENT RELAY – INSTRUCTION MANUAL
CHAPTER 5: SETPOINTS
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See page 5–158
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See page 5–161
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See page 5–162
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See page 5–166
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