Event E072
Qualified person
Event message:
Failure of Control Contactor in Battery Stack
Explanation:
After the system has issued a command to close or open, the DC contactor does not perform the action correctly within the preset time, or the feedback status does not match the command. As a result, the system triggers an error and enters a shutdown state.
Corrective measures:
Check the current value of the system. If the contactor is operating under high-current charging or discharging conditions, first reduce the charge/discharge capacity through the system to lower the current to a safe range.
Once the current has stabilized at a low value, try opening/closing the contactor again via the battery stack control system.
Once the contactor has successfully performed the correct action, this error can be automatically corrected.