Main Autoreclose Setpoints; 79 Unit Setpoints; Autoreclose (79); Introduction - GE Multilin F650 Instruction Manual

5 SETPOINTS

5.5.5.1 INTRODUCTION

Note: The Switchgear element used in the F650 autoreclose unit is the one configured in the Number of Switchgear
setpoint inside Breaker setpoints, at "Setpoint > System Setup > Breaker > Breaker setpoints". Configuration of these
Switchgear parameters is performed at Setpoint > Relay Configuration > Switchgear using EnerVista 650 Setup
software.
The F650 autoreclose unit allows producing up to four breaker "shots" prior to locking out. Thanks to the great flexibility of
F650 configurable logic, the conditions to produce the autoreclose initiation and the selection of which protection elements
will be enabled after each shot can be programmed. This flexibility allows implementing protection schemes that used to
require wiring and special functions in conventional equipments. One application is, for instance, to program instantaneous
the first protection trip and the second one to be time delayed, in order to give time for output fuses to burning of a feeder
branch. This can be as simply as disable the instantaneous units after the first shot using the programmable logic. (see
example in section )

5.5.5.2 MAIN AUTORECLOSE SETPOINTS

Setpoint > Control Elements > Autoreclose
Table 5–75: 79 UNIT SETPOINTS
SETPOINT > CONTROL ELEMENTS > AUTORECLOSE
SETPOINT DESCRIPTION
Function permission
Maximum Number of shots
Dead time 1
Dead time 2
Dead time 3
Dead time 4
Reclaim time or reset lockout delay
Reclose conditions permission
Hold time
Reset time
Snapshot event generation
Autoreclose setpoints description:
Function: This setpoint allows enabling or disabling the autoreclose operation. If this setpoint is adjusted as
DISABLED, the recloser will be out of service.
Max Number Shots: This setpoint specifies the number of autoreclose shots allowed in the unit. If this number is
exceeded, the autoreclose goes to LOCKOUT status, and the fault is considered to be permanent.
Dead Time 1 ... 4: These times correspond to the first, second, third and fourth breaker reclosings configured in the unit.
Reclaim Time (also known as safety time or reset lockout delay): This is the time required to go from LOCKOUT
to READY status once the breaker is closed.
Cond. Permission: This setpoint enables the verification of the relay reclose conditions. If this setpoint is enabled, before
the breaker closing command execution the system will verify the possible reclose conditions. If this
setpoint is disabled, the closing command will be executed after the reclose time without verifying
these conditions. The reclose conditions input is configured as AR CONDS INPUT at Setpoint >
Relay Configuration > Protection Elements
Hold Time: This setpoint indicates the waiting time for the reclose conditions to be present. This setpoint is only
operative if the Cond. Permission setpoint is enabled.
Reset Time: This is the time that the autoreclose takes to return to READY status after a successful reclose. Once
this time has expired, the shot counter will reset and the autoreclose will get to READY.
GE Multilin
NAME DEFAULT
VALUE
Function DISABLED
Max Number Shots 1
Dead Time 1 0.00
Dead Time 2 0.00
Dead Time 3 0.00
Dead Time 4 0.00
Reclaim Time 0.00
Cond. Permission DISABLED
Hold Time 0.00
Reset Time 0.00
Snapshot Events ENABLED
F650 Digital Bay Controller
5.5 CONTROL ELEMENTS

5.5.5 AUTORECLOSE (79)

STEP RANGE
N/A [DISABLED – ENABLED]
N/A [1 : 4]
0.01 s [0.00 : 900.00]
0.01 s [0.00 : 900.00]
0.01 s [0.00 : 900.00]
0.01 s [0.00 : 900.00]
0.01 s [0.00 : 900.00]
N/A [DISABLED – ENABLED]
0.01 s [0.00 : 900.00]
0.01 s [0.00 : 900.00]
N/A [DISABLED – ENABLED]
5
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