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SIDEBAR: Backup Basics-Testing, Testing
OTHER PARTS OF THIS ARTICLEPt. 1: Understanding Backup Power, Generator ApplicationsPt. 2: Understanding Backup Power, UPS ModulesPt. 3: Understanding Backup Power, Effective TestingPt. 4: This Page

While a comprehensive list of recommended testing steps for generators and UPS systems in institutional and commercial facilities requires a major commitment of time and energy, basic testing of these essential systems can be beneficial.
For generator systems, minimum testing should include:
- complete visual inspection of generator and auxiliary system components
- full-load, transient-response testing with power quality analysis
- startup timing and engine-ramp rate testing and full-load burn-in with infrared thermography
- full warning and shutdown testing, locally and at the building management system or electrical power monitoring system
- auxiliary system testing, including redundant starter testing
- testing required by the National Fire Protection Agency or other local authorities.
For UPS systems, minimum testing should include:
- complete visual inspection of components, including battery systems and maintenance-bypass components
- full-load, transient-response testing while on inverter with power-quality monitoring powered by the utility and the generator
- full-load burn with infrared thermography
- rectifier walk-in timing and verification
- complete battery discharge with battery monitoring
- bypass transfer sequence and interlock testing
- full alarm and status indication testing, locally and at the building management system or electrical power monitoring system
- power-saving and efficiency-mode testing and failure response.
Specifying these tests can give managers a basic level of confidence in generators and UPS systems. And while comprehensive testing of these systems at the component and system level requires a greater commitment, managers and facilities should at least consider its benefits, which include increased energy efficiency. But even basic-level testing can help managers understand and trust system capabilities, and it can minimize risk and protect critical loads.
Understanding Backup Power, Generator Applications
Understanding Backup Power, UPS Modules
Understanding Backup Power, Effective Testing
SIDEBAR: Backup Basics-Testing, Testing