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7
Adding/Removing Modules
Active Redundancy
7.1
n+x technology is one of the most reliable configurations. "n"
represents the minimum number of PROTECT 1.040 UPS
modules that requires the total power; "x" represents the
number of redundant PROTECT 1.040 UPS modules, i.e. the
number of fault-tolerant modules that the system can handle at
the same time. Assume the apparent output power to be
achieved is 15 kVA, for example. One module of the
PROTECT 1.M delivers 4 kVA. This means it is necessary to
select n=4 at least (4 x 4 kVA = 16 kVA). If x = 2 then two
additional UPS modules would provide active redundancy.
In the sample configuration above, each of the 6 UPS modules
delivers a 2.5 kVA proportion of the overall power. If one
module were to fail, the five other modules would each deliver
3 kVA. If two UPS modules fail, the remaining four modules
would each deliver 3.75 kVA. The system indicated here
therefore permits a maximum of two modules to fail, although
the probability of two modules failing simultaneously is
considerably
Furthermore, additional modules guarantee that the overall
system has a higher overload capacity, for instance.
You can increase capacity by adding to the number of modules
in the PROTECT 1.M. Do this by connecting from one to six
modules
autonomously and are independent of one another. Faulty
modules can easily be renewed during ongoing operation at
any time.
Installing and Removing UPS Modules
7.2
The PROTECT 1.M uses what is referred to as hot-swappable
technology, which means you can install or uninstall, add or
remove modules irrespective of whether the unit is switched on
or off. If the UPS is operating with loads, before removing any
modules you should check that the remaining modules are
capable of providing sufficient power otherwise there may be
an overload.
lower
than
in
parallel.
The
that
of
one
six
UPS
modules
33
module
failing.
function
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