ZIV 7IRD-A, Инструкция по эксплуатации

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Chapter 10. Receiving Tests
10-7
M7IRDA2003I
7IRD-A/J/M: Distribution Protection & Control Terminal
© ZIV APLICACIONES Y TECNOLOGÍA, S.L.U. 2020
10.5.6 Recloser Test (7IRD-A/J Models)
In order to test the Recloser, the following points are reminded:
- After manual closing, you must wait for the duration of the security time. If you do not wait
for that time before generating the trip, the Recloser will lockout.
- For the Reclose Sequence to start, the protection has to detect that the Breaker is open,
and that no current flows through the phases before the starting time has concluded
(setting in the group of
Recloser - Time Sequence Control ).
- If the equipment is giving a fault in the Breaker opening circuit, it will not carry out the
reclose, and will lockout.
- For the Recloser to carry out the complete sequence until its permanent fault status, the
trips have to be generated.
- It has to be taken into account if the rated voltage options and inhibition inputs, are being
used. Same remark for the units inhibitors, and the trip and reclose masks.
Figure 10.2 Recloser Test Setup.
The preceding figure shows how to carry out the Recloser test. If the current generator did not
cut the injection before the starting time, the test can be carried out by opening the current
circuit (by opening the Breaker itself o by simulating it), or by generating an instantaneous trip,
using a simple pulse. This way of action could be sufficient to cause the instantaneous element
to trip, and at the same time, to stop it from seeing the current circulating before starting time.