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3 S Y S T EM D E S C R I P T I O N
Maintenance bypass switch (Q1)
Q1
Maintenance bypass switch (MBS)
The manual bypass switch
connects the load direct
to the bypass input supply
when it is closed (ON). The
UPS is isolated for ser-
vices or maintenance
work.
UPS Power Modules (Ax)
A1
UPS module 1
The UPS module has a
rated power of 50 kW. It
has a decentralized paral-
lel architecture (DPA) as
described in chapter 3.2
A2
UPS module 2
A3
UPS module 3
A4
UPS module 4
A5
UPS module 5
A6
UPS module 6
Output UPS switch (Q2)
Q2
UPS output switch
Allows to isolate an UPS
Frame and built-in UPS
modules from the load. Es-
pecially useful when swap-
ping modules or inserting
new modules into the sys-
tem because with the
switch open it is possible
to power the modules,
configure it and perform
functional tests before
connecting it to the rest of
the system and to the
load.
