Chapter 13 - Autoreclose
Reset Total AR
Yes
No
CB Cls Fail
CB Open 3 ph
DT Complete
&
Autoreclose Start
Lockout Alarm
CB Closed 3 ph
CB Healthy
&
AR SysChecks OK
V00509
Figure 155: AR CB Close Control logic
7.6
AR SYSTEM CHECKS
The permission to initiate an Autoreclose depends on the following AR system check settings. These are found in
the AUTORECLOSE column under the AR SYSTEM CHECKS sub-heading and are not to be confused with the main
system check settings in the SYSTEM CHECKS column.
The AR SYSTEM CHECKS are as follows:
●
Live/Dead Ccts: When enabled this setting will give an AR Check OK signal when the LiveDead Ccts OK
signal is high. This logic input DDB would normally be mapped in PSL to appropriate combinations of Line
Live, Line Dead, Bus Live and Bus Dead DDB signals.
No System Checks: When enabled this setting completely disables system checks thus allowing
●
Autoreclose initiation under any system conditions.
●
SysChk on Shot 1: Can be used to disable system checks on the first AR shot.
AR with ChkSyn: Only allows Autoreclose when the system satisfies the Check Sync Stage 1 (CS1) settings in
●
the main SYSTEM CHECKS menu.
AR with SysSyn: Only allows Autoreclose when the system satisfies the Check Sync Stage 2 (CS2) settings in
●
the main SYSTEM CHECKS menu.
The AR System Check logic is as follows:
298
&
&
&
S
Q
R
&
S
D
Q
R
&
S
D
Q
R
&
&
P14x
Total Shot Counter
(Increment on +ve edge )
Auto Close
Hold Reclaim Output
AR CB Unhealthy
AR No Sys Check
P14xEd1-TM-EN-1