Vertiv Tech EXS 0080kTK16FN01000, Руководство пользователя

Страница: 94 / 137

Vertiv | Liebert EXS 80kVA UPS | User Manual 80
Parallel System and LBS System
6.4.3. Power-on Procedures for Parallel System
1. Set the parallel parameter of each UPS in the parallel system, then commission the inverter. The specific
commissioning procedures are as follows:
a) Ensure that the total external maintenance bypass switches are open in the parallel system. Open the front
door of each UPS, ensure that the internal maintenance bypass switch Q3 is off, and that the input cables and
PE terminals are securely connected.
Warning
To avoid misreporting as faults, all operations relating to disconnection or connection of the maintenance bypass switch
shall be finished within three seconds
b) Close the total bypass input switch Q2.
c) Close the N line switch QN, output switch Q5, bypass input switch Q2, main input switch Q1 and all the
external output isolating switches (if any) in turn. Now, the system is powered on, and LCD screen is activated.
Refer 4.2.1 Start-up Screen .
d) The UPS internal cooling fan starts, and the rectifier executes self-check and starts to run (see Figure 5-2
for power flow page). The rectifier runs in normal state for about 30 seconds, after which the rectifier start-up
phase is complete. Please confirm that the LCD displays bypass and main input normally, and that the current
log window generates an alarm of ‘PowerCAN Comms. Abnormal’ or ‘Discrete Bus Comms. Abnormal’, otherwise
you should check that the switch Q2 and switch Q1 have been closed, and that parallel cables of each UPS have
been well connected. The alarm indicators (red) are always off till all the UPSs in parallel system are rectified.
e) Refer to 6.4.2 Parallel System Parameters Setting for the parallel parameters setting for each UPS. Carry out
the following procedures if the UPS is running normally.
f) Press the power button of one UPS and press the Enter key to start the UPS. The run (green) indicator
blinks, and the inverter will start, then the run indicator will be on. If the battery is not connected, the alarm
indicator will be solid on, and the buzzer will beep every second. If the battery is connected, the alarm indicator
will turn off.
g) If the UPS is working normally, press the power button of this UPS for two seconds to turn off the inverter.
h) Repeat steps a to g to power on and commission the inverter of other UPSs respectively.
• Carry out the parallel commissioning after each UPS is working normally.