5-112
F650 DIGITAL BAY CONTROLLER
GEK-106310-AF
5.5 CONTROL ELEMENTS
CHAPTER 5: SETPOINTS
5.5.3 Autoreclose (79)
Note:
The Switchgear element used in the F650 autoreclose element is the one configured in the
Number of Switchgear
setting inside
Breaker settings
, at “
Setpoint > System Setup > Breaker > Breaker settings
”. Configuration of these
Switchgear parameters is performed at
Setpoint > Relay Configuration > Switchgear
using the EnerVista 650 Setup
software.
The F650 autoreclose element produces up to four breaker “shots” prior to lockout. Thanks to the great flexibility of F650
configurable logic, the conditions to produce the autoreclose initiation and the selection of protection elements is enabled
after each shot can be programmed. This flexibility allows implementing protection schemes that used to require wiring
and special functions in conventional equipment. One application is, for instance, programming as instantaneous the first
protection trip while the second one is time delayed, in order to give time for output fuses to burning of a feeder branch.
This can be as simple as disabling the instantaneous elements after the first shot using programmable logic. (see example
in section 5.5.3.5 Logic for blocking protection functions during reclose cycle)
5.5.3.1 Main autoreclose settings
Autoreclose settings description:
Function:
This setting allows enabling or disabling the autoreclose operation. If this setting is adjusted as
DISABLED, the recloser is out of service.
Max Number Shots:
This setting specifies the number of autoreclose shots allowed in the element. 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
element.
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 setting enables the verification of the relay reclose conditions. If this setting is enabled, before
the breaker closing command execution the system verifies the possible reclose conditions. If this
setting is disabled, the closing command is 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 setting indicates the waiting time for the reclose conditions to be present. This setting is only
operative if the
Cond. Permission
setting 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 resets and the autoreclose goes to READY.
Setpoint > Control Elements > Autoreclose
setting Description
Name
Default Value
Step
Range
Function permission
Function
DISABLED
N/A
[DISABLED – ENABLED]
Maximum Number of shots
Max Number Shots
1
N/A
[1 : 4]
Dead time 1
Dead Time 1
0.00
0.01 s [0.00 : 900.00]
Dead time 2
Dead Time 2
0.00
0.01 s [0.00 : 900.00]
Dead time 3
Dead Time 3
0.00
0.01 s [0.00 : 900.00]
Dead time 4
Dead Time 4
0.00
0.01 s [0.00 : 900.00]
Reclaim time or reset lockout delay
Reclaim Time
0.00
0.01 s [0.00 : 900.00]
Reclose conditions permission
Cond. Permission
DISABLED
N/A
[DISABLED – ENABLED]
Hold time
Hold Time
0.00
0.01 s [0.00 : 900.00]
Reset time
Reset Time
0.00
0.01 s [0.00 : 900.00]
Snapshot event generation
Snapshot Events
ENABLED
N/A
[DISABLED – ENABLED]
Summary of Contents for F650
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