GE Industrial Solutions TLE Series 225-500 User Manual - Manual (Page 77)

Critical Power
Modifications reserved Page 77/90
GE_UPS_USM_TLE_SUL_M22_M50_1US_V010.docx User Manual TLE Series 225 - 500 UL S1
3. Open Manual Bypass switch Q2 (Pos. O) on all Units.
 The Load is supplied by the Utility through the Automatic Bypass of all Units of the Parallel System.
The Synoptic Diagram, on all UPS units, must display the status “LOAD SUPPLIED BY AUTOMATIC BYPASS”.
Synoptic Diagram of first unit Synoptic Diagram of other units
4. Insert the Inverter performing the “Inverter ON” command on first unit.
Before performing this procedure make sure that the LED 1 (Rectifier) and LED 3 (Booster/Battery
charger) are lit.
Perform the “Inverter ON” command from the screen:
Commands 1 / Inverter / ON.
 Soft-start of Inverter, indicated with blinking LED 2 (Inverter).
 At the end of Soft-start the LED 2 (Inverter) remains lit.
 In case of sufficient output power, the output will transfer to Inverter.
Synoptic Diagram of first unit Synoptic Diagram of other units
5. Insert the Inverter performing the “Inverter ON” command on all other units.
Do not start the next Inverter until the sequence of the previous ends.
Perform the “Inverter ON” command from the screen:
Commands 1 / Inverter / ON.
 Soft-start of Inverter indicated with blinking LED 2 (Inverter).
 At the end of Soft-start the LED 2 (Inverter) remains lit.
 As soon as the output power of the Inverters is sufficient to supply the Load, the output of the units with
running Inverter will transfer to Inverter.
 LED ALARM turns Off and the LED LOAD PROTECTED must be lit.
The Synoptic Diagram, on all UPS units, must display the status “LOAD SUPPLIED BY INVERTER”.
Synoptic Diagram of first unit Synoptic Diagram of other units
END OF PROCEDURE