GE_UPS_USM_TLE_SUL_M16_M50_2bU_V010.docx
User Manual TLE Series 160 - 500 UL S2B
7.3.4 Complete Parallel System shut-down
NOTE !
The UPS 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.
If IEMi option is available, make sure that IEMi Operation Mode is disabled before
starting this procedure.
Initial status:
Load supplied from all Inverters of the Parallel
System.
1. Perform the command “System shutdown” on anyone of
the units.
Perform the command “System shutdown” through the screen:
Commands 1 / System shutdown / Shutdown.
• Load is disconnected from UPS 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 “Q1 - UPS Output switch” (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, if present, the “CB3 – External
Battery switch” (option) and then the “External Battery Protections”.
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-link1 and DC-link 2 voltage has reached 10Vdc.
4. Disconnect the Utility supply on all Units.
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.
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