Ormazabal ekor.rps - Setting Range (6 Tables); Coil Monitoring Example

IG-150-EN version 04; 03/10/16
105
General instructions
ekor.rps
Protection functions. Description and settings
4.24.2. Setting range (6 tables)
Setting Min Max Step Notes
Excessive Nr. of trips
1 254 1
Time span for excessive Nr. of trips [s]
300 3.600 1
Trip circuit monitoring enable
YES/NO
Close circuit monitoring enable
YES/NO
∑kI
2
alarm threshold
0 65.535 1
∑kI
2
initial value
0 65.535 1
Calculation time
KI, kI
2
, kI
2
t
Waiting time [s]
0 0,1 0.01
Table 4.37. Setting range
4.24.3. Coil monitoring example
The connections for the trip coil would be similar.
When the breaker is closed, “52a” contact is also closed. If
there is continuity in the circuit, the input programmed as
“coil monitoring with 52 close” is seen as closed; if there was
not continuity, it would be seen as open (breaker failure).
When the breaker is open, “52b” contact is closed. If there
is continuity in the circuit, the input programmed as “coil
monitoring with 52 open” is seen as closed; if there was not
continuity, it would be seen as open (breaker failure).
The relays programmed as “close circuit failure” or “trip
circuit failure” are activated 20 seconds after the failure is
detected, in case the failure remains after this time.
1
23
4
5
6
1
Closing coil supervisión 52 closed
2
Manual close
3
Auto close
4
Closing coil supervisión with 52 open
5
Iterlockings
6
Closing coil
Figure 4.38. Relays programmed