GE Industrial Solutions SG Series 225 & 300 Operating Manual - Manual (Page 59)

Modifications reserved Page 59/79
OPM_SGS_USM_M22_M30_2US_V010.doc User Manual SG Series 225 & 300 UL S2
2 Close UPS Output Switch Q1 (Pos. I) on first Unit.
• Rectifiers start automatically, blinking LED 3 (Rectifier ON) indicates Soft-start.
• At the end of Rectifier Soft-start, the LED 3 (Rectifier ON) remains lit.
Synoptic Diagram of first unit Synoptic Diagram of other units
3. Connect the Battery on first Unit by closing (Pos. I) its External Battery Switch or Fuses.
Attention: to check the right DC polarities on both side of the switch/fuse holder!
LED 4b (Charging Battery) should be lit indicating battery charge.
ATTENTION !
Before performing this operation, the LED 3 (Rectifier ON) must remain lit, thus
indicating that the DC-Link has reached floating voltage (540Vdc)!
4. Repeat the procedures 2 and 3 for each next Unit.
• When closing UPS output switch Q1 on the last unit of the Parallel System, the Automatic Bypass of all
Units connects to the Load.
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
5. Insert the Inverter by pressing the “Inverter ON” ( I ) key on first unit.
• Soft-start of Inverter, indicated with blinking LED 5 (Inverter available).
• At the end of Soft-start the LED 5 (Inverter available) remains lit.
• In case of sufficient output power, the output will transfer to Inverter.
• LED Alarm turn Off and the LED Operation must be lit.
Synoptic Diagram of first unit Synoptic Diagram of other units
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