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3.3 UPS outputs
The EW3940 UPS has 4 outputs:
•
At the left side two outputs for power failure (surge/spike) protection.
•
At the right side two outputs for power failure (surge/spike) protection with a
backup function when AC fails. The built-in battery will supply power for
continuous power supply for the equipment.
3.4 Battery and Charging:
•
When the UPS is connected to AC, the charger will charge the battery fully in
about 10 hours.
•
When the battery is used up, please turn off the UPS and charge the battery for a
least 10 hours when. Then turn on the UPS
4.0 Main Features
4.1 Unattended Operation
•
Please connect the UPS to AC and press the ON button on the front panel, the
UPS is turned on and the AC outputs stabilized voltage.
•
When AC fails, UPS will supply power to the equipment immediately. And when
the battery is used up, UPS will turn off automatically.
•
When AC comes back, UPS will turn on automatically.
4.2 Protection
•
Battery discharge protection: when the battery discharges and the UPS is in
inverter mode, the UPS will check and monitor the working status of the battery;
when the battery voltage drops to the limited lowest voltage, the inverter will turn
off automatically and protect the battery; When AC comes back, the UPS will
turn on automatically.
•
Short-circuit Protection
㸸
when the UPS is in inverter mode and there is shock
or short-circuit, UPS will output limited currency, protecting the UPS( When in AC
mode, the UPS will be protected first by input fuse and then transfers to the
inverter working mode).
4.3 Three Kinds of Alarm Function
•
When AC fails, and the UPS supplies power, UPS will alarm once every 6
seconds and the beep stops about 40 seconds later.
•
When the battery is nearly used up, the UPS will alarm automatically and the
beep frequency is once every 2 seconds.
•
When the battery is really used up, the UPS will alarm for a very long time and
after 20 seconds, it will turn off automatically.
Summary of Contents for EW3940
Page 1: ...EW3940 41 42 43 Line Interactive UPS with AVR...
Page 2: ...EW3940 41 42 43 Line Interactive UPS with AVR...
Page 13: ...EW3940 41 42 43 Interakt v Vonali UPS AVR funkci val...
Page 26: ...EW3940 41 42 43 Line Interactive UPS met AVR...
Page 39: ...EW3940 41 42 43 Line Interactive UPS con AVR...
Page 52: ...EW3940 41 42 43 Sai Interactivo con AVR...
Page 65: ...EW3940 41 42 43 UPS de linha interactive com AVR...
Page 77: ...EW3940 4142 43 Onduleur Interactif avec AVR...
Page 84: ...8 FRAN AIS 6 0 DEL UPS hors ligne Model EW3940 Model EW3941 EW3942 EW3943...
Page 91: ...EW3940 41 42 43 Line Interactive USV mit automatischem Spannungsregler...
Page 104: ...EW3940 41 42 43 Zasilacz UPS typu line interactive 650 VA z wtyczk Schuko...
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