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MegaFlex 1000 to 1600 UPS User Manual / REV-A

7.1.2 Complete UPS shut-down

Note!

Follow this procedure only in case the UPS system and the Load must be completely powered

down.

If eBoost™ option is available, make sure that eBoost™ Operation Mode

is disabled before starting

this procedure.

Initial status:

Load supplied by

Inverter.

1. Perform the command “System shutdown”.

Perform the command “System shutdown” through the screen:

Commands 1 / System shutdown / SHUTDOWN.

• Load is disconnected from UPS.

• Rectifier and Inverter are shut down and all contactors are

opened.

• LED 1 (Rectifier) and LED 2 (Inverter) are OFF.

• LED ALARM is lit.

Open the “Q1 – External UPS Output Circuit Breaker” (Pos. O).

3. Disconnect the Battery from the UPS by opening the “External Battery Breaker” (Pos. O).

Note!

Before performing the next procedure (4) wait 5

minutes for DC-link Capacitors discharge.

Use the MEASURES/Rectifier screen to ensure that

the DC-link 1 and DC-link 2

voltage has reached

10Vdc.

Press “MUTE” key to reset Acoustical Alarm.

LED ALARM remains lit.

4. Disconnect the Utility from the input distribution.

End of Procedure

Danger!

It will take 5 minutes for the DC capacitors to discharge.

Open only the front door, do not open any other part of the UPS.

ABB MegaFlex UL S1 Series User Manual

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