User Manual 10H52188UM60 - Rev. 2 - 09/2012
33
Liebert NXC
Single UPS Installation And Commissioning
Select “Enabled” in “Shared Battery” according to whether the battery is shared. Set “System Configuration” to “Single” if the
system is single system. Select “Normal” or “ECO” according to the UPS working mode, select “50Hz” or “60Hz” in “Output
Frequency Level” according to the power grid frequency level.
Set “Output Voltage Level” and “LBS Function” according to the user requirement, set “Command password” to “12345”, the
default value of “Protocol” is “Velocity”, select “Three” or “Single” in “3 Phase Output or 1 Phase Output”, as shown in Figure
3-13.
ITA 016kVA
Settings
Single
YDN23 Velocity
3 Phase Output or 1 Phase Output Three
ESC
YDN23
Protocol
Three Single
14:30:36
Figure 3-13 Settings interface 3
3.5.3
Normal Mode Start-Up
1. Close the UPS output MCB (QS4), the input MCB (QS1) and the bypass MCB (QS2) on by one. The maintenance bypass
MCB (QS3) must be opened.
Warning
After closing the above mentioned MCBs, the UPS output terminal block of the load will be live, pay attention to the personnal safety to
avoid electric shock. Note whether it is safe to feed power to load.
2. LCD displays the self-test screen; the fault indicator (red) and inverter indicator (green) are on at the same time for about 5
seconds. After the self-test, UPS enters the bypass state, the fault indicator turns on and the buzzer beeps for 1 second.
3. The rectifier runs in normal state about 30 seconds, the rectifier start-up is finished.
4. Finish and check the parameter settings of the single UPS.
5. Press the ON button for 2 seconds, the inverter indicator (green) are blinking, the inverter starts, and the inverter indicator
turns on.
6. Measure whether the inverter output voltage is normal.
7. If the battery is not connected, the fault indicator is blinking. If the battery is connected (internal battery with MCB QS6 and
QS7), the fault indicator turns off.
3.5.4
Battery Mode Start-Up
1. Close the battery MCB; press the battery cold start button on the UPS front panel for 2 seconds, the LCD displays the start
screen. The fault indicator (red) will blink and the buzzer will beep continuously after the rectifier finish the start.
2. Press the ON button for 2 seconds, the inverter starts, and the inverter indicator (green) turns on.
NXC 20kVA
