
21
Manual
www.kraun.it
Turn to bypass mode under the following two conditions:
1. Turn off the UPS in line mode while start the bypass output.
2. overload in line mode.
nOte: when UPS is working in bypass mode, it has no back up function.
5.5.2. line mode
leD indications on front panel in line mode are as following: the inverter green leD is on .
when input ac mains is in line with the working conditions, UPS will work in line mode.
5.5.3. battery mode
leD indications on front panel in battery mode are as following: both the inverter green leD and bat-
tery yellow leD are on, the buzzer beeps once every 4 seconds. The warning red leD is on when beep-
ing.
when the mains power down or instable, UPS will turn to battery mode at once. continuously working
on battery mode can last for 20 hours depending on the battery volume and the load. If battery dis-
charge for 20 hours and the load is lower than 10% of rated power , the UPS will alarm for half an hour
and then shutdown to protect the batteries.
5.5.4. eco mode
leD indications on front panel on eco mode are as following: both the inverter green leD and bypass
yellow leD are on.
when the input mains meets the input range of the eco mode and start the eco function, the UPS will
works on eco mode. If input ac mains exceeds the range of eco several times in a row in a minute but
stays in inverting input range, UPS will work on inverting mode automatically.