APC MW II manual

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16	Symmetra MW II 1200 kW 3 x 400/230 V Installation - 990-1979E-001

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Contents Installation Page Contents Specifications Symbols used in this guide Installation safetyPage UPS Sections Serial numberInverter Section Control/Input/Output SectionExternal Bypass Static Switch Overview UPS Wiring PrinciplePower wiring External disconnection switches Input/Output wiring precautions  AC and PE cable connectionsBattery cables connection Hole distance AC BAT1 + BAT2 External Bypass Static Switch Wiring Top cable entry Maintenance Bypass Panel Communication cable overviewCommunication cables with optional Relay Board Relay BoardsLocation of relay boards Relay Function Mode Special Comments Relay board 1 connectionsRelay board 2 connections Page Electrical Specifications Low-Impedance/High-Impedance EarthingAC Input DC InputHeat dissipation AC OutputAC Input External Bypass SSW Input and upstream breakers Required Breaker Settings 400 V SystemsTorque specifications Output and downstream breakers Dual Mains Installation Characteristics System and Protective EarthingTN Systems Reference to IEC 60364-4-41Additional requirements for generating sets IEC 60364-5-55 Protective devices in TN systemsTT Systems Protective devices in TT systemsIT Systems Condition Protective devices in IT systemsSee IEC Legal in DK specialcases Symmetra MW Switchgear Service Entrance Earthing arrangements and protective conductors Grounding Page Page 990-1979E-001 2009