Input live
line
Input
neutral line
U
P
S
Load
N/E
L
Output live
line
Output
neutral line
Fig. 2-1 b Wrong Distribution
2.2.2 Installing the UPS
I. Connect external battery of long backup time UPS
This step is saved for standard UPS.
1. Be sure that the cell number is in compliance with the UPS
specifications (twenty 12V cells in series). After connecting the cells
in series, use a voltmeter to confirm that the battery voltage is about
240Vdc;
Notice:
Battery cells by different manufacturer, of different model or use
state can not be combined together.
2. Make sure that the battery switch is placed to OFF;
3. Remove the terminal block cover, use a voltmeter to confirm that
the battery wiring terminals on the UPS input/output terminal block
have no DC voltage;
4. As shown in Fig. 2-2, respectively connect the positive pole (red)
and negative pole (black) of the battery to the battery wiring
Chapter 2 Installation 15
E1-20010916-C-1.0
