Protection Functions
PRS-7367 171
Countermand CB01 tripping command after CB01 is confirmed have tripped off. Backup
power automatic switching device will transmit CB02 closing pulse and send “BPAS Close CB02”
signal after CB02_Close_T;
Countermand “BPAS Close CB02” signal and send “BPAS success” after CB02 is
confirmed to have been closed. Once CB02 fails to operate within 5s after the release of “BPAS
Close CB02” signal, terminate logic and discharge BPAS1, and then the device would give “BPAS
Close CB fail” signal.
3.34.2.3 Backup power automatic switching of incoming line 2 (BPAS2)
Discharge Conditions
The logic diagram of the discharge condition of BPAS2 is shown in Figure 3.34-10.
Figure 3.34-10 Diagram of the discharge condition of BPAS2
Charge Conditions
The logic diagrams of the charge condition of BPAS2 is shown in Figure 3.34-11.
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