Eaton POWERWARE 9315 User Manual download pdf (Page 5)

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Other UPS Manufacturers’ Battery Test Methods

• Inconsistent battery test load yields inaccurate battery runtime

estimates

• Other UPS manufacturers use a timer that does not update as

the load changes

DC Expert Battery Test Method

• Consistent testing proactively provides battery runtime

information, accurate to +/-3%

• During a utility outage, battery time remaining automatically

updates with load shedding

• Battery string health determined during periodic testing

• Programmable, automatic monthly testing, any day, any time

• The monthly battery tests perform very light battery discharges,

removing less than 10% of available battery runtime, to ensure

you are always ready for a utility outage

• Light load testing does not impact battery life

• Rectifier does not turn off during battery testing; rectifier shares

load with battery for consistent battery load testing regardless of

inverter load

• Since the rectifier does not turn off, the critical load is never at

risk during battery testing. If a battery should fail during the test

the system will recover 100%.

• DC Expert log stores results of last 30 tests for trending analysis

• Accommodates either valve regulated (“maintenance-free”) or

wet cell batteries

DC Expert

Battery Management (200-500 kVA)

DC Expert provides real-time information on battery string health and battery runtime remaining. With this integral feature, you always

know the condition of your battery string. Most importantly, DC Expert allows you to plan for battery maintenance and avoid any unexpect-

ed load losses due to battery deterioration. DC Expert’s battery test method outperforms the competition. Compare its battery test method

to the method used by other manufacturers, and see for yourself how DC Expert’s technique offers the highest level of assurance and

battery runtime accuracy.

Rectifier

Inverter

DC Link

Inv

ass

Rectifier

During the battery test, the

rectifier regulates DC link

voltage to obtain consistent

battery power discharge

month to month.

• The battery fully supports the inverter load

• As the critical load changes from test to test, so does the

battery load

• Other UPS manufacturers turn off the rectifier to initiate

battery testing

• If the battery fails during testing, the inverter must perform

an emergency transfer to bypass to prevent dropping the

critical load

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Eaton POWERWARE 9315 User Manual Page 5

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