GE SG 225 User Manual

Also see for SG Series: Installation guide Datasheet Use and care manual Installation guide User manual

Modifications reserved Page 67/79OPM_SGS_USM_M22_M30_2US_V010.doc User Manual SG Series 225 & 300 UL S27.2.5 Reconnect a UPS unit to a Parallel SystemNOTE:The Load is still powered by the other units supplying the Parallel Bus.This UPS unit will be powered on and connected to the Parallel Bus in order to sharethe Load with each other's.If eBoost™ option is available, make sure that eBoost™ Operation Mode is disabledbefore starting the shutdown procedure.WARNING !The High Speed Bus Cable Connecting J52 (A) and J62 (B) in any case cannot beconnected or disconnected after the system has been powered ON.The Bus Terminals must be properly connected before powering the additional unit.Open the front door, of the Unit to reconnect, and make sure that:• All the connections to the input/output bus bars of the UPS have been made correctly.• The protection panels are fastened in their correct position.• The UPS Output Switch Q1, Manual Bypass Switch Q2 (option) and the External Battery Switch orFuses must be open (Pos. O).1. Switch-ON the Utility Voltage, on the Unit to reconnect, from the input distribution (bothRectifier and bypass if separated).At this stage the electronic power supply is switched ON.Overall test resultsTest1 OK Test7 OKTest2 OK Test8 OKTest3 OK Test9 OKTest4 OK Test10 OKTest5 OK Test11 OKTest6 OKThe UPS performs a SELFTEST.A successful termination of the tests will be indicated with Overalltest results “OK”.Commissioning cannot be continued should one or more testsresult to be negative.Please contact in this case your Service Center.With “Overall test results - OK” the Synoptic Diagram is displayed.LED 1 (Utility Rectifier OK) and LED 2 (Utility Bypass OK) must be lit.The buzzer sounds, press the “MUTE” key to reset acoustical alarm. LED Alarm remains lit.Synoptic diagram of the unit to reconnect Synoptic diagram of other unitsContinue ►