Manual Eminent EM3940 (page 5 of 14) (English)

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5 | ENGLISH

3.0 Working Principle

3.1 In AC mode

When UPS is in normal working mode, AC goes through the filter and the harmful

waves are filtered. After that, AC charges the battery and meanwhile, passes UPS

AVR and the filter and provide power for the equipment.

3.2 AC Failure

When AC fails, the battery will supply power to the inverter and then passes filter and

provide power for the equipment, ensuring the continuous power supply.

3.3 Connections of the UPS

The UPS has the following connections:

• 1 RS232 serial port (only for EM3941 and EM3942)

• 1 USB port

• 1 AC connection (Power input) (only for EM3942)

• Output connections (the number differs per model)

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Others manual(s) of Eminent EM3940

Eminent EM3940 User Manual - Dutch - 14 pages

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Eminent EM3940 Manual

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