Separate A Ups Unit From The Redundant Parallel System - GE FGC TLE Series Manual

7.3.2 Separate a UPS unit from the Redundant Parallel System

NOTE !
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.
NOTE !
The Load is powered by the UPS Redundant Parallel System.
One UPS unit of the Parallel System has to be turned Off, while the Load is shared
between the other units supplying the parallel bus.
WARNING !
The control bus cable connecting
disconnected after the system has been powered on.
Initial status
:
Load supplied from all Inverters of the
Redundant Parallel System.
1. Disconnect the Inverter performing the "Inverter OFF" command on the Unit to separate.
1 - Perform the "Inverter OFF" command from the screen:
Commands 1 / Inverter / OFF.
2 - Repeat the "Inverter OFF" command from the screen:
Commands 1 / Inverter / OFF.
With Redundant System, performing the "Inverter OFF" command the Inverter shuts down and it will stay OFF.
Performing the "Inverter OFF" command the Load is transferred to the Utility and the Inverter remains
operating, it means the system is not redundant.
In this case is not possible to switch-OFF one unit without transferring the Load on Utility.
• Load supplied from Inverter(s) of the other Unit(s) of the Parallel System.
Synoptic diagram of the unit to separate
2. Open "Q1 - UPS Output switch" (Pos. O) on the Unit to separate.
• LED ALARM is lit.
Synoptic diagram of the unit to separate
Modifications reserved
GE_UPS_USM_TLE_SUL_M62_1M0_2US_V010.docx
Critical Power
J1A - J2A and J1B - J2B
Synoptic diagram of other units
Synoptic diagram of other units
cannot be connected or
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User Manual TLE Series 625 - 750 - 1000 UL S2