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HT33 Series User Manual
Table 5-3 Indicator status
LED
Status
Rectifier indicator
Green
Battery indicator
Green
Bypass indicator
Off
Inverter indicator
Green
Load indicator
Green
Load indicator
Green
5.2.2 Battery Module Start
（
Only Applicable for the UPS with Battery Cold Start Elements
）
1. Check if the batteries have been connected, close the external battery switch.
2. Press the red start-up button of battery on the back door panel.
3. The LCD starts up at this time, press battery cold start again for about 5 seconds. The green battery
indicator flashes. The rectifier enters normal operation states and after about 30s, the battery indicator
goes steady green.
4. The inverter starts up automatically, the green inverter indicator flashes. The inverter will output after
60s. Then UPS run in battery mode.
a. 10KVA~30KVA (without built-in battery)
b. 10KVA~30KVA (with built-in battery)
Fig. 5-2 diagrammatic drawing for battery starting button location
5.3 Procedure for Switching between Operation Modes
5.3.1 Procedure for Switching the UPS into Battery from Normal Mode
Open input switch to cut off the mains, UPS enters the battery mode. If UPS should be switched to
normal mode, wait for a few seconds before closing input switch, so as to supply the mains again. 10s
later, the rectifier will start up automatically to supply power to the inverter.
5.3.2 Procedure for Switching the UPS into Bypass from Normal Mode
Select the manual bypass menu of "function 1” of “function/ setting”
