MegaFlex 1000 to 1600 UPS User Manual / REV-A
7.3.4 Complete RPA Parallel System shut-down
Note!
The UPS RPA Parallel System and the Load have to be completely powered down.
If eBoost™ option is available, make sure that eBoost™ Operation Mode
is disabled before starting
this procedure.
Load supplied by all Inverters of the
RPA Parallel System.
“
”
Perform the command “System shutdown” through the screen:
Commands 1 / System shutdown / SHUTDOWN.
• Load is disconnected from UPS RPA Parallel System.
• Rectifiers and Inverters are shut down and all Contactors are opened.
Synoptic diagram of first unit
Synoptic diagram of other units
2. Open the “Q1 – External UPS Output Circuit Breaker” (Pos. O) on all Units.
Synoptic diagram of first unit
Synoptic diagram of other units
3. Disconnect on all Units the Battery from the UPS by opening the “External Battery Breaker” (Pos. O).
Press “MUTE” key to reset Acoustical Alarm. LED ALARM remains lit.
• 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 supply on all Units.
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.
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