IG-150-EN version 04; 03/10/16
117
General instructions
ekor.rps
Automation functions
5.3. Reclosing after tripping by minimum frequency
5.3.1. General description
After a trip by minimum frequency, if the function is enabled
and not locked, the unit tries only one reclosing.
When the unit trips, the recloser moves onto ongoing cycle
and waits the programmed closing time; in that moment,
if the minimum frequency condition is set as “NO” or if the
frequency is higher than the minimum programmed, the
close command is given to the breaker. If the minimum
frequency condition is set as “YES” and it is not fulfilled, it
moves to definitive trip.
The signal 79 f-switch/circuit breaker closing blocking is
active until the reclosing or definitive tripping conditions
are met.
If the “definitive tripping waiting time” has elapsed and the
reclosing conditions have not been met, it goes to definitive
tripping if “definitive tripping waiting time” is set to “YES”. If
it is set to “NO”, it remains waiting for reclosing conditions
indefinitely.
There is a reclaim time after the closure, if during that time
a new trip by minimum frequency happens, it moves to
definitive trip.
Setting the recloser out of service by command or by
locking by digital input affects both this operating mode
and the trip by current operating mode.
5.3.2. Settings
Setting
Min
Max
Step
Notes
Enable
YES/NO
Min. freq. Condition to reclose
YES/NO
Min. frequency to reclose
40
70
0.01
Closing time [s]
1
1000
1
Reclaim time [s]
1
300
1
Enable definitive tripping waiting time
YES/NO
Definitive tripping waiting time [s]
0
86 400
1
Reclosing condition Min. Voltage
YES/NO
Reclosing value Min. Voltage. [V]
0
200
0.1
Table 5.2.
Settings
Note: This type of operation is used from version “AD” of the CPU’s FW.
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