APC MW II manual 990-1979E-001, 2009

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APC Worldwide Customer Support

Customer support for this or any other APC product is available at no charge in any of the following ways:

Visit the APC Web site to access documents in the APC Knowledge Base and to submit customer support requests.

www.apc.com (Corporate Headquarters)

Connect to localized APC Web sites for specific countries, each of which provides customer support information.

www.apc.com/support/

Global support searching APC Knowledge Base and using e-support.

Contact the APC Customer Support Center by telephone or e-mail.

Local, country-specific centers: go to www.apc.com/support/contact for contact information.

For information on how to obtain local customer support, contact the APC representative or other distributors from whom you purchased your APC product.

Entire contents copyright 2009 American Power Conversion Corporation. All rights reserved. Reproduction in whole or in part without permission is prohibited. APC, the APC logo, and Symmetra are trademarks of American Power Conversion Corporation. All other trademarks, product names, and corporate names are the property of their respective owners and are used for informational purposes only.

990-1979E-001

*990-1979E-001*

4/2009

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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 Power wiring UPS Wiring PrincipleOverview 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 overviewLocation of relay boards 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 Input External Bypass SSW AC OutputHeat dissipation Torque specifications Required Breaker Settings 400 V SystemsInput and upstream breakers 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