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4
4
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4.1 Introduction
The front panel of UPS, consisting of a 2 lines alphanumeric display, 6 status lamps, plus 4 function
keys, allows the complete monitoring of the UPS status. The mimic flow diagram helps to
comprehend the operating status of the UPS. By using the function keys operator can move on
menus and change some parameters
.
Figure 4-1 Control and display panel
Line
If lamp is lit mains is okay
Battery
If lamp is lit UPS is operating on batteries
By-pass
If lamp is lit static bypass is active and load is connected to mains voltage
Maint.Sw.
If lamp is lit mechanical bypass switch is on
Inverter
If lamp is lit inverter feeds the load
O/P Sw.
If lamp is lit S4 power output switch “1” on position.
There are 4 function keys on front panel these are ENTER, DOWN, PLUS and MINUS.
DOWN key helps moving on menus, PLUS and MINUS keys select options , ENTER key means
the selected option or menu is valid.
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