GE 225 Installation Manual

Also see for GuardSwitch 300 Series: Instruction Instructions Instructions Installation instructions Installation guide

g GEOPM_SGS_ISG_M22_M30_0US_V011.doc 17/38 Installation Guide SG Series 225 & 300 kVA3.7 ELECTRICAL WIRINGUPS installation and connection must be performed by qualified servicepersonnel only.It is the responsibility of the installation technician to ensure that all localand national electric codes are adhered to.3.7.1 Utility input connectionEnsure that the AC and DC external isolators are OFF and locked out to preventtheir inadvertent operation.Do not apply power to the equipment prior to the commissioning by a qualifiedservice engineer.Before any other input connection, connect and check the grounding wire.The UPS has available input terminations for the Rectifier and Bypass.The unit may be powered from a common input source or separate input sources if desired.Separate input Rectifier & Bypass (recommended)The Bypass and Rectifier Inputs are to be powered from different Utility supplies (F1 andF2 inputs).In this case, when the Rectifier Input Fuses are opened, the Bypass and the ManualBypass are supplied by the other source.In this case, remove the interconnection links BR1, BR2 and BR3 on theinput terminals or bus bars. See Fig. 3.8.3-2.Common input Rectifier & BypassThe same power source is to be used for both Bypass Supply and Rectifier Input (inputF3).Bear in mind that when the Utility Fuses are opened there is a supply failure to the Rectifieras well as to the Bypass and Manual Bypass.In this case, the interconnection links BR1, BR2 and BR3 on the inputterminals or bus bars must remain connected. See Fig. 3.8.3-2.Separate input Rectifier & Bypass (recommended) Common input Rectifier & BypassFig. 3.7.1-1 Separate input Rectifier & Bypass Fig. 3.7.1-2 Common input Rectifier & Bypass1 = Rectifier2 = Inverter3 = Automatic Bypass4 = Manual Bypass6 = Load5 = Utility input7 = Battery