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Alarm 20:

When the bypass is connected during the start up, a bypass phase rotation error is detected and the start up procedure is inhibited.

Alarm 21:

This alarm appears when in any phase, the rectifier input voltage phase to neutral is out of the set margins (+15 %/–20 % by default) or the rectifier input frequency is out of the set margins (±5 Hz by default). Then the rectifier is shut down.

Alarm 22:

This message appears when the protection circuit is activated to prevent overload of the IGBT rectifier.

Alarm 23:

This message appears when an internal error in the digital signal processor (*) DSP occurs in the rectifier module. The rectifier is shutdown immediately. The UPS will make 3 attempts to restart, then the rectifier will be blocked.

Alarm 24:

When a mains phase rotation error is detected and under these conditions the rectifier is tried to be turned ON, an input phase rotation alarm appears shutting down the rectifier.

Alarm 25:

This message appears when the protection circuit for the avoidance of

DC inverter-IGBT overload is active.

Alarm 26:

This message appears when the inverter becomes overloaded (> 100%).

Alarm 27:

When an external shutdown signal is enabled, the inverter will shut down appearing this message.

Alarm 28:

When the inverter is running and the maintenance bypass switch is turned ON the inverter shuts down immediately.

Alarm 29:

This alarm appears when, in a parallel system, one UPS goes to battery mode.

The inverter will shut down.

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AEG 2.33 2 user manual

2.33 2 specifications

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