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This results in the following constellations with n+x technology:
1 + 0 Use of 1 unit max. 10, 15 or
20 kVA
No redundancy
1 + 1 Use of 2 units max. 10, 15 or
20 kVA
Single redundancy
1 + 2 Use of 3 units max. 10, 15 or
20 kVA
Double redundancy
(max. expansion level)
2 + 0 Use of 2 units max. 20, 30 or
40 kVA
No redundancy
2 + 1 Use of 3 units max. 20, 30 or
40 kVA
Single redundancy
(max. expansion level)
3 + 0 Use of 3 units max. 20, 30 or
40 kVA
No redundancy (max.
expansion level)
The actively redundant parallel operation automatically switches
to power-increasing operation if the output power requirement
exceeds the UPS single block power, i.e. the degree of
redundancy is decreased or is completely eliminated.
Conversely, the active UPS redundancy degree automatically
increases again when the power consumption decreases.
The connection normally takes place in the low-voltage main
distribution, which also contains the external manual bypass
and the following subdistribution of connected load circuits.
Such a parallel board can be purchased in a wall housing incl.
external HU as well as feeder and load distribution board from
AEG Power Supply Systems via your specialist dealer.
9.2 Set-up / Connection of Parallel Operation Board
The mains connection of each individual UPS takes place in the
same way as described in chapter 5.
The three-phase mains connection secured for
each UPS must always have the same phase
sequence, i.e. all UPS units are supplied at the
input terminals L1, L2 and L3 by the same
phase each time (no mix!).
In UPS bypass mode, the phase L1 is used to
connect the single-phase load with the mains.
The central external manual bypass, which must
have an all-pole design, must also be supplied
by this phase L1.