APC MW II manual

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Warning: Do not use high voltage testing equipment as it will destroy the electronic circuits in the units.

Caution: The system is equipped with an optional auto-start function enabling the system to start without any warning when power is applied.

Caution: All wiring to be in accordance with applicable national and/or local electrical wiring rules.

This unit contains components that are sensitive to electrostatic discharge (ESD). Follow proper ESD procedures to avoid severe damage to electronic components.

2	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 Inverter Section UPS SectionsSerial number Control/Input/Output SectionExternal Bypass Static Switch UPS Wiring Principle Power wiringOverview 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 overviewRelay Boards Location of relay boardsCommunication cables with optional Relay Board Relay Function Mode Special Comments Relay board 1 connectionsRelay board 2 connections Page Electrical Specifications Low-Impedance/High-Impedance EarthingAC Input DC InputAC Output AC Input External Bypass SSWHeat dissipation Required Breaker Settings 400 V Systems Torque specificationsInput and upstream breakers 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