Studer Innotec SA
next3
36 V 1.3 © Studer-Innotec SA next3 Tech manual
Due to the source assistance function (Smart-Boost), the current at
the output of the device may be higher than the rated current of
the inverter. It is the sum of the current supplied by the additional
source and the current supplied by the inverter. In this case, the
dimensioning of the output cables will be carried out by adding the
current indicated on the protection device located on the upstream
of the unit, to the nominal current of the inverter.
If circuit brakers (CB) are installed at the output, we recommend B
curve devices. They will be sized at maximum to the highest value
listed on the unit’s nameplate or by the addition of the first value plus
the value of the input protective device. (i.e. inverter current + input
current). As example, if the AC Source current is 50Aac per phase
and knowing that the current of the inverter is (16000/230/3)=23Aac per phase, the total current on
the output would be 73Aac per phase.
In any case it must be chosen according to the cable size downstream.
If the source assistance function (Smart-Boost) is not used; the size of the protection device for the
AC-loads output will be established at a maximum value equal to the rated current of the inverter,
or at the maximum value of the protection device at the input if that one exceeds the rated current
of the inverter.
If the AC-source is not used the protective device will be sized equal or smaller than the smaller value
indicated on the nameplate.
The next3 is intended to be supplied by alternative voltage sources such as the grid or a generator.
Check that the rated voltage of the source corresponds to the rated voltage of the next3 model
specified on the nameplate on the side of the next3.
To Next Page
Loading...
Need help?
General