APC MW II manual

Contents Installation Page Contents Specifications Symbols used in this guide Installation safetyPage Inverter Section UPS SectionsSerial number 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 TN Systems CharacteristicsSystem and Protective Earthing 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