
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.
Содержание PowerTrust A3589A
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Страница 10: ...Contents 8 Figures ...
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Страница 20: ...Preface 8 ...
Страница 22: ...Preface 10 ...
Страница 52: ...1 30 Chapter1 Overview Specifications Figure 1 8 UPS Input Voltage Transfer Points ...
Страница 56: ...1 34 Chapter1 Overview UPS Modes Figure 1 10 Simplified UPS 5 5 kVA UPS Block Diagram ...
Страница 62: ...1 40 Chapter1 Overview Support Information ...
Страница 76: ...2 14 Chapter2 Unpacking and Inspecting Shipping and Storage Requirements ...
Страница 104: ...3 28 Chapter3 Installing the UPS Examples of PowerTrust Connections in a System ...
Страница 116: ...5 4 Chapter5 Verification Procedures Load Testing ...
Страница 148: ...7 6 Chapter7 Cleaning and Maintenance Exchanging Batteries Fan ...
Страница 190: ...A 42 AppendixA HP UX UPS Monitor Error Messages Log Only Messages ...
Страница 218: ...C 8 AppendixC Configuring the OS for the PowerTrust UPS Power Failing the UPS ...