GE lp33 20 series Installation Manual

Critical PowerModifications reserved Page 21/43GE_UPS_ISG_LPS_3UL_20K_30K_2US_V010.docx Installation Guide LP33 Series 20 & 30 UL S24.7 ELECTRICAL WIRINGWARNING !UPS installation and connection must be performed by QUALIFIED SERVICEPERSONNEL only.It is the responsibility of the installation technician to ensure that all local andnational electric codes are adhered to.4.7.1 Utility input connectionWARNING !Ensure that the AC and DC external isolators are OFF and locked out to prevent theirinadvertent 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 availability of input terminations for the Rectifier and Bypass.The unit may be powered from a common input source or dual input sources (option).Common input Rectifier & BypassFig. 4.7.1-1 Common Input Rectifier & BypassThe same power source is to beused for both Bypass Supply andRectifier Input (input F1).Bear in mind that when the UtilityFuses are opened there is asupply failure to the Rectifier aswell as to the Bypass and ManualBypass.Dual input Rectifier & Bypass (option)Fig. 4.7.1-2 Dual Input Rectifier & Bypass (option)The Bypass and Rectifier inputsare to be powered from differentUtility supplies (F2 and F3 inputs).In this case, when the RectifierInput Fuses are opened, theBypass and the Manual Bypassare supplied by the other source.