Studer VarioString VS-120, Руководство пользователя

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Studer Innotec SA
VarioString
16 V 2.3 User manual
4.3 P
HOTOVOLTAIC GENERATOR
(PV)
The VarioString may accept the following maximum input voltages:
VS-120
 600 V max for independent and parallel cabling
 900 V max for series cabling
VS-70
 600V
4.3.1 Dimensioning
The solar generator is dimensioned to cover an important part or the entire power requirement of the
system. Once the power has been decided upon, it will be distributed among one or more solar
charge regulators, wisely combining the modules among them. These combinations in series and in
parallel must be carried out according to the voltage and current limits of the VarioString solar
charge controller.
The possible operating range of the VS-70 is illustrated in the graph below:
The whole solar system must be installed according to protection class II.
The capacitor banks inside the VS-120 hold a DC voltage for several minutes after the PV
input is disconnected. It is necessary to wait 10 minutes before reconnecting the PV input
cables after making any changes to the PV array or its wiring.
When connecting the PV inputs in parallel, it is necessary to first connect the VarioString
MPPT channel inputs in parallel, and then connect the PV array positive and negative
cables to the paralleled VarioString positive and negative inputs.