Newave 1000-3000VA, Руководство пользователя

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5.2 When Utility is Normal
The working principle of the UPS under Utility normal condition is illustrated as follows:
When Utility is normal, the AC source is rectified to DC, partially fed into the charger to charge
battery and partially fed into irter. The inverter revert the DC to a cleaned and pure AC to supply
energy to the load connected. The LEDs illuminated.
5.3 When Utility is Abnormal/Absent
The working principle of the UPS under Utility abnormal condition is illustrated as follows:
1. When Utility is abnormal, the UPS will direct the battery energy automatically to the Inverter
without delay, and turn off the charger and AC/DC converter. The inverter revert DC to AC to
supply energy to the output load connected without interruption. The LED will be illuminated.
2. When Utility is back to Normal, the UPS will turn on the AC/DC converter, turn off DC/DC
converter and switch the charger to charging mode. It has the same working principle as figure
5.1.
3. During a utility outage, the UPS will work as illustrated in figure 5.2. When Battery is low,
buzzer will beep continuously till battery is completely cut off. The battery low protection of the
UPS will cut off battery supply after a preset threshold to avoid the battery from over-drain. The
(Battery Low) LEDs will light up till the UPS is completely cut off. The UPS will re-start
automatically when Utility is available.
Fig 5.2
Fig 5.3