AEG 1.04 User Manual

 

33 

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 lower than that of one module failing. 
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 in parallel. The six UPS modules function 
autonomously and are independent of one another. Faulty 
modules can easily be renewed during ongoing operation at 
any time.

 

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.