Complete UPS shut-down. ABB TLE Scalable UL Series UPS

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7.1.2

Complete UPS shut-down

TLE Scalable Series 40 to 150 UL S1 UPS User Manual / REV-B

Note!

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

Make sure that “SEM - Super Eco Mode” 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.

2. Open “Q1 - UPS Output switch” (Pos. O).

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

Note! Press “MUTE” key to reset Acoustical Alarm.

LED ALARM remains lit.

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.

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.