Chapter 6. Description of Operation of Protection Subsystem
M7IRDA2003I
7IRD-A/J/M: Distribution Protection & Control Terminal
© ZIV APLICACIONES Y TECNOLOGÍA, S.L.U. 2020
6-14
Reclose Supervision by Reference Voltage
If the Recloser
Reclose Supervision by Reference Voltage
setting is
YES
, the next step in
the Reclose logic process is a
Reference Voltage Timer
for detecting rated voltage at the
Reference Voltage
input. If voltage is detected during the user predetermined time interval, the
Recloser switches to the
Reclose Timer (Dead Time)
state prior to the first reclose attempt. If
rated voltage at the
Reference Voltage
input is not detected during the user predetermined
time interval, the Recloser switches to
Recloser Lockout Due to Lack of Reference Voltage
.
If the Recloser
Reference Voltage
setting is
NO
, the
Reference Voltage Timer
logic is
bypassed and the
Recloser Timer (Dead Time)
state is achieved immediately.
Recloser Timer (Dead Time)
The
Recloser Time (Dead Time)
is the time the breaker is allowed to remain open before a
reclose is attempted. This time delay starts when the
Recloser Timer (Dead Time)
status is
achieved. The
Recloser Timer (Dead Time)
time delay setting can be different for each reclose
attempt. When this timer has timed out, the
Reclose Inhibit (INR)
input status is verified. If an
INR
input signal is not present, the
Reclose Command
is activated and the
Closing Time
status is achieved.
If an
INR
signal is present, the
Supervision by Reclose Inhibit
setting status is checked. If
Supervision by Reclose Inhibit
is disabled, the
Reclose Command
is activated and the
Closing Time
status is achieved. If
Supervision by Reclose Inhibit
is enabled, the
Reclose
Inhibit Timer
starts. If the
Reclose Inhibit (INR)
input is removed before the timing is
completed, the
Reclose Command
is activated and the
Closing Time
status is achieved. If the
Reclose Inhibit Timer
times out and the
Reclose Inhibit (INR)
input is present, the Recloser
status changes to
Recloser Lockout Due To Unsatisfied Reclosing Conditions
.
Содержание 7IRD-A
Страница 2: ......
Страница 164: ......
Страница 165: ......
Страница 166: ......
Страница 167: ......
Страница 168: ......
Страница 169: ......
Страница 170: ......
Страница 171: ......
Страница 172: ......
Страница 173: ......
Страница 174: ......
Страница 175: ...D List of Illustrations and Tables...