Delta RT Series User Manual page 23

 Battery/ Battery Pack Connection Warnings
1. Only use the same type of batteries from the same supplier. Never use old, new and different Ah
batteries at the same time.
2. The number of batteries must meet UPS requirements.
3. Do not connect the batteries in reverse.
4. Use the voltage meter to measure whether the total voltage, after battery pack connection, is
around 12.5Vdc × the total number of batteries.
 Alarm
When any external battery pack connected to the UPS has the following problems, the UPS system
will sound an alarm. Please see the table below.
External Battery Pack
No.
Status
1 Battery Mode
2 Battery Low Warning
Battery Missing/
3 Weak Battery/
Battery Replacement
4
Overload
5
Fault
NOTE:
After battery reconnection or replacement, it might take a while for the UPS to switch off the
alarm automatically. If, after a period of time, the audible alarm still exists, please manually
initiate a battery test. Please follow the route below to execute the manual battery test in
order to clear the alarm. The charge current is shared by the internal and external batteries.
Route: press the button
Start Battery Test. Fore relevant information, please refer to 9.2 Main Menu.
The alarm beeps once every 2 seconds.
The alarm beeps once every 0.5 second.
The alarm beeps once every 2 seconds.
1. Overload 105 ~ 125%: The alarm beeps once every 2
seconds.
2. Overload 125 ~ 150%: The alarm beeps once every 0.5
second.
The buzzer sounds continuously for 5 seconds when the
UPS detects an internal fault. After the 5-second long beep,
the alarm beeps once every 2 seconds.
for 0.1 second → tap the icon
23
Description
→ select Test → select