process of emergencies that require emergency power down, such as smoke, fire, electric shock and
so on.
The procedure for powering down in an emergency is as follows:
1) In case of emergency, press the emergency stop button on the front door of the storage cabinet.
When the emergency stop button is pressed, the PCS should stop charging and discharging the
batteries, and all the positive and negative main relays (KF1/KF2) inside the high voltage box and the
auxiliary relay (KF4) inside the high voltage box should be disconnected immediately.
Figure 6.8 Emergency stop button switch (subject to actual design)
2) Disconnect the battery disconnect switch QB of all high voltage boxes in the energy storage
cabinet and battery cabinets.
3) Disconnect circuit breaker QA0 on the three-phase AC side of the PCS inside the storage
cabinet, and continue to disconnect the AC input circuit breaker outside the storage cabinet, if
necessary.
4) Disconnect the QA1 main power switch in the auxiliary power box, the emergency power
down operation can be ended at this step, if necessary, you can continue to disconnect the external
single-phase AC power switch outside the auxiliary power box
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