UPS Maintenance and Troubleshooting
About this course

Overview

A UPS only earns its place on the day the mains fails. Two classroom days cover the types of UPS, how the rectifier, inverter, DC bus and bypass work, how battery banks are configured and sized for runtime, and the faults that turn up in service. You then spend two days at industrial sites looking at real installations: UPS equipment, battery banks, bypass arrangements, alarm histories and maintenance records. The course ends with a practical assessment and a written troubleshooting report. Site visits depend on host-site approval, and live testing is limited to authorised, qualified people.

What you will be able to do

Learning outcomes

  • Identify the components of a UPS from its block diagram
  • Size a battery bank and work out backup runtime
  • Read UPS alarms and isolate the fault
  • Judge battery health from test results
  • Write a preventive maintenance checklist for a UPS installation
  • Present a fault investigation with corrective recommendations
What the course sets out to do

Course objectives

  • Explain how single-phase and three-phase UPS systems operate
  • Compare offline, line-interactive and online double-conversion designs
  • Calculate UPS loading, battery capacity and backup runtime
  • Diagnose common UPS and battery faults
  • Assess battery condition from voltage, resistance and temperature readings
  • Build preventive maintenance schedules and fault reports
Course content

Modules

01

UPS Systems and Battery Power Supplies

Types, single and three phase, rectifiers, inverters, DC bus, static and maintenance bypass, battery banks, load, efficiency and runtime.

02

Maintenance, Troubleshooting and Battery Testing

Common faults and failure modes, battery deterioration, overload and bypass faults, power quality, and maintenance planning.

03

Site Visit: UPS Installation and Battery Systems

Inspecting industrial UPS equipment, battery banks, bypass, cooling, monitoring and maintenance records.

04

Site Visit: Troubleshooting and Final Assessment

Fault and alarm histories, runtime data, failure case studies, and a practical assessment with a written report.

Who it is for

Target audience

Electrical and maintenance engineers, technicians and supervisors who install, maintain or manage UPS and battery systems.

Before you start

Prerequisites

A basic grounding in electrical systems is recommended.

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