Chapter 1
1-33
Overview
UPS Modes
Service Bypass Mode
This mode allows the Electronics Unit, Battery Box, Control Panel, and Fan to be serviced
while still providing AC input power to the connected equipment.
In contrast to Automatic Bypass mode, which is triggered on automatically by the UPS,
Service Bypass mode occurs when the Service Bypass switch is
manually
turned to
BYPASS. In Service Bypass mode, AC input power passes through the Bypass breaker,
through the Service Bypass switch, which is set to BYPASS, and on to the output breakers
and receptacles.
Because the Electronics Unit and Battery Box are isolated from the AC input and the
output, there is no power failure protection while in this mode. Connected equipment is
protected from surges, however, by the Bypass circuit breaker.
Summary of Contents for PowerTrust A3589A
Page 7: ...Contents Contents 5 ...
Page 8: ...Contents 6 Contents ...
Page 10: ...Contents 8 Figures ...
Page 12: ...Contents 10 Tables ...
Page 14: ...2 ...
Page 20: ...Preface 8 ...
Page 22: ...Preface 10 ...
Page 52: ...1 30 Chapter1 Overview Specifications Figure 1 8 UPS Input Voltage Transfer Points ...
Page 56: ...1 34 Chapter1 Overview UPS Modes Figure 1 10 Simplified UPS 5 5 kVA UPS Block Diagram ...
Page 62: ...1 40 Chapter1 Overview Support Information ...
Page 76: ...2 14 Chapter2 Unpacking and Inspecting Shipping and Storage Requirements ...
Page 104: ...3 28 Chapter3 Installing the UPS Examples of PowerTrust Connections in a System ...
Page 116: ...5 4 Chapter5 Verification Procedures Load Testing ...
Page 148: ...7 6 Chapter7 Cleaning and Maintenance Exchanging Batteries Fan ...
Page 190: ...A 42 AppendixA HP UX UPS Monitor Error Messages Log Only Messages ...
Page 218: ...C 8 AppendixC Configuring the OS for the PowerTrust UPS Power Failing the UPS ...