User Manual Liebert Hipulse E Chapter 9 - Operating Instructions
Single or '1+N' UPS System Procedure
(07/04) Page 9-3
9.2 Procedure for UPS Start-Up: without interrupting power to the load
This procedure will describe how to start the UPS and the how to transfer the load from the external maintenance
bypass to the UPS inverter. It is assumed that the installation is complete, the system has been commissioned by
authorized personnel and the external power isolators are closed. Refer to Fig. 9-1 for corresponding isolators Q1 to
Q4.
ENSURE CORRECT PHASE ROTATION.
1. Close Q3 Maintenance Bypass switch and external switch (inside Maintenance Bypass) to load.
2. Close the Output power switch Q4 and the Bypass power switch Q2.
Initializing Window: after first connecting power to the UPS and closing
the isolator, this message will appear on the LCD screen. It persists for
about five seconds while the control firmware is loaded. It is followed by a
screen showing various messages with the time and date on the bottom line.
The Module Mimic indicators Bypass supply healthy ( 1 ) and after 20 seconds Load on bypass ( 6 ) will flash and red
led (13) will illuminate.
The Display window will show the present status of the UPS:
3. Close the Rectifier input power switch Q1.
Note: In ECOMODE the message ‘LOAD ON BYPASS’ will not appear.
4. Wait for 20 seconds then close the battery circuit breaker.
The Module Mimic indicator ( 3 ) Battery unavailable should extinguish. Several LED's on the Battery state of
charge bar graph will illuminate showing the battery state of charge.
The rectifier will `walk-in' and stabilize at float the voltage.
5. Open the Maintenance Bypass power switch Q3 and fit lock.
The Module mimic indicator Load on bypass ( 6 ) will Flash amber.
The Display window will show the present status of the UPS:
6. After 5 seconds the Module Mimic LED's will change so that the Load on inverter ( 5 ) will light steady green and
the Load on bypass ( 6 ) will extinguish.
Note: In ECOMODE the Load on Mains led (6) stays on while the Load on inverter led (5) is off.
LOAD ON BYPASS
INV.: OFF
HH.MM.SS DD.MM.YY
RECTIF. SWITCH OPEN
BATTERY C.B. OPEN
MANUAL BYPASS CLOSED
HH.MM.SS DD.MM.YY
LOAD ON BYPASS
MANUAL BYPASS CLOSED
INV OFF
HH.MM.SS DD.MM.YY
LIEBERT
UPS
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