Startup Procedures In Eco Mode; Startup Procedures In Battery Mode (Battery Cold Start) - Liebert NXC 30kVA User Manual

3. Press the ON key for two seconds.
The inverter starts up, and the inverter indicator (green) is flashing. After the inverter runs normally, the UPS transfers
from the bypass to inverter, then the inverter indicator (green) is on.

5.2.2 Startup Procedures In ECO Mode

1. Open the front door of the UPS, ensure that the internal maintenance bypass switch Q3 is disconnected and switch
Q6 is closed, while the input cables and copper bars are reliably connected.
All operations relating to disconnect or close the switch of maintenance bypass switch shall be finished within three seconds, in
case of misreporting as faults.
2. Close the bypass input switch Q2, rectifier input switch Q1, output switch Q5 and all external output isolating
switches (if any) of the UPS in turn.
At the moment, the system is power on, and the startup screen pops up. Refer to 4.2.1 Start Screen.
About 25 seconds later, confirm that the LCD shows the rectifier power supply and the bypass power supply are
normal; if not, check whether the switches Q1 and Q2 are closed. Then the rectifier starts up and the alarm indicator
(red) is on. At the same time, the bypass static switch is closed. About 30 seconds later, the alarm indicator (red) is
flashing, then the rectifier startup is finished.
3. Press the ON key for two seconds.
The inverter starts up, and the inverter indicator (green) is flashing. At this time, the UPS is in ECO mode, and
powered by the bypass.

5.2.3 Startup Procedures In Battery Mode (Battery Cold Start)

Note: The startup function of battery mode is only applicable to the UPS equipped with internal battery.
1. Verify that the battery has been connected, and that the battery voltage is transferred to the input terminal of the
battery.
2. Open the front door, and press the battery cold start button (see Figure 5-2 for its position).
At the moment, the startup screen pops up. Refer to 4.2.1 Start Screen.
About 25 seconds later, the rectifier starts up and the alarm indicator (red) is on. About 30 seconds later, the alarm
indicator (red) is flashing, and then the rectifier startup is finished.
3. Press the ON key for two seconds.
The inverter starts up, and the inverter indicator (green) is flashing. After the inverter runs normally, the inverter
indicator (green) is on. At this time, the UPS is powered by the inverter.
UPS operated in ECO mode
Figure 5-2 Battery cold start button
Liebert NXC 30kVA And 40kVA UPS User Manual
Chapter 5 UPS Operation Introduction
Warning
37
Battery cold start button