Vertiv APM 0250kMK16FN02000, User Manual

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Bypass mode
As shown in Figure 2.5 below, in normal mode, in case of an inverter failure, an inverter overload or an inverter manual
shutdown, the static switch will transfer the load from the inverter side to bypass side, with no interruption in power to the
load. At this time, if the inverter and bypass are not synchronized, power supply to the load has transitory interruption, with
time of less than 20 ms.
F igu re 2.5 Sch em atic diagram o f bypass m o de
N o. D es crip tion
1 Bypass input
2 Bypass input switch
3 Static switch
4 Output switch
5 UPS output
Maintenance mode
As shown in Figure 2.6 below, if the UPS maintenance or service is required, you may use the manual maintenance bypass
switch to transfer the load to maintenance bypass, with no interruption in power to the load. This maintenance bypass switch
is fitted in all UPS modules and rated for full load of a single module.
F igu re 2.6 Sch em atic diagram o f m ain ten an ce m o de
N o. D es crip tion
1 Bypass input
2 Maintenance bypass switch
3 Maintenance bypass
4 UPS output
2 Overview
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Vertiv™ Liebert® APM Plus User Manual