Ups Self-Test; Silence Function - Delta 3KVA User Manual

4-4 UPS self-test

If press the 1/TEST button when the UPS is in "ON-LINE mode", it will make the UPS
shift to "ON-BATTERY mode" and automatically perform a self-test for about 10 seconds.
(Shown as fig 4-4.) The self-test function will check the condition of the battery. After
self-test is finished and test is O.K, the UPS will return to "ON- LINE mode".

4-5 Silence function

The buzzer can be turned "On" or "Off" by toggling the 1/TEST button when the UPS is
in "ON-BATTERY mode".
4-6 If certain abnormal condition occurs, the UPS will send the following
messages:
ON-BATTERY mode: When the UPS is in "ON-BATTERY mode", the on- battery
LED will light on, buzzer beep half second every 2 seconds and then the UPS will
start supplying power to load through batteries. Shown as fig 4-5.
OVERLOAD: If the load exceeds the UPS rating, after a limited period, the overload
LED will light on and buzzer continuous beeping to alarm the user. The user should
unplug some uncritical loads to release the overload condition. Shown as fig 4-6.
Fig 4-6 Overload and UPS turn into Bypass
Fig 4-4 UPS Self-Test
Fig 4-5 On-Battery Mode
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