The UPS fail error occurred and the final system for protecting the main engine against automatic power failure failed. A BMS AC220V UPS FAIL alarm appeared on the alarm monitoring system in the ECR. BMS - Bridge maneuvering system.
BMS AC220V UPS FAIL
In simple words, the uninterruptible power supply (UPS), which is designed for the normal operation of the automatic control system of the main engine during the transition of the ship's electrical station from main to emergency power, has stopped working.
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