APC MW II User Manuals

Table of Contents

• Safety

  5
  • IMPORTANT SAFETY INSTRUCTIONS - SAVE THESE INSTRUCTIONS

    5
    • Symbols used in this guide

      5
    • Installation safety

      5
• System Overview

  7
  • UPS Sections

    7
    • Serial number

      7
    • Inverter Section

      7
    • Control/Input/Output Section

      7
  • External Bypass Static Switch

    8
    • Serial number

      8
• Electrical Installation

  9
  • Typical UPS Wiring Principle

    9
    • Power wiring overview

      9
    • External disconnection switches

      10
    • Input/Output wiring precautions

      10
    • AC and PE cable connections

      11
    • Battery cables connection

      12
  • External Bypass Static Switch Wiring

    14
    • Top cable entry

      15
  • Communication cable overview

    16
  • Relay Boards

    17
    • Location of relay boards

      17
    • Communication cables with optional Relay Board

      17
    • Relay board 1 connections

      18
    • Relay board 2 connections

      19
• Specifications

  21
  • Low-Impedance/High-Impedance Earthing

    21
  • Electrical Specifications

    21
    • AC Input

      22
    • DC Input

      22
    • AC Output

      23
    • AC Input External Bypass SSW

      23
    • Heat dissipation

      23
    • Notes

      23
    • Torque specifications

      24
  • Required Breaker Settings (400 V Systems)

    24
    • Input and upstream breakers

      24
    • Output and downstream breakers

      25
• Appendix

  27
  • System and Protective Earthing

    27
  • TN Systems

    27
    • Characteristics

      27
    • Reference to IEC 60364-4-41 413.1.3

      27
    • Reference to IEC 60364-5-54 546.2.3

      27
    • Additional requirements for generating sets (IEC 60364-5-55 551.4.2)

      28
    • Protective devices in TN systems

      28
  • TT Systems

    29
    • Characteristics

      29
    • Reference to IEC 60364-4-41 413.1.4

      29
    • Protective devices in TT systems

      29
  • IT Systems

    30
    • Characteristics

      30
    • Reference to IEC 60364-4-41 413.1.5

      30
    • Protective devices in IT systems

      31