Studer Innotec SA
next3
4 V 1.3 © Studer-Innotec SA next3 Tech manual
1 INTRODUCTION
Congratulations! You are about to install and use an equipment from the
Studer NEXT range. You have chosen a high-tech converter that will play a
central role in the energy production of your solar electrical installation. The
next3 has been designed to work as a solar battery charger and hybrid
inverter working in both modes “on-grid” and ”off-grid”. Its advanced and
completely configurable functionalities will guarantee a perfect functioning
of your energy system in any situations.
The NEXT range is a family of hybrid inverters, with or without included solar
chargers. All models are designed with Swiss quality to have outstanding
performances in offgrid and ongrid applications.
When the next3 is connected to batteries and photovoltaic panels, it
automatically recharges batteries in an optimal way with all the available
solar power. According to the selected programming, the solar can be
injected to the grid or used for self-consumption only. The accuracy of the Maximum Power Point
Tracking (MPPT) algorithm, the high output and low internal consumption ensure an optimal
valorisation of the energy produced by the PV modules.
The battery charge profile may be set freely according to the battery type or the operation mode.
The charging voltage is corrected depending on the temperature thanks to the external sensor nx-
tempSensor. If using lithium batteries, the next3 communicates with battery BMS through a CAN-bus
and ensure an optimal operation according to the manufacturer of the battery.
The control, display and programming unit nx-interface allows an optimal setup of the system and
guarantees the user a permanent control over all important parameters for the installation.
Moreover, it enables the recording of the system data to analyse later its functioning (data logging).
The nx-interface also acts as a communication center to connect the energy system to the remote
monitoring web portal https://portal.studer-innotec.com for distant supervision. The remote
supervision can also be done with the APP Studer Easy Monitoring, available for both IOs and
Android.
The next3 operates as an independent device and is also designed to be included into a Studer
energy system together with other NEXT compatible devices, display modules and the
communication modules.
The parallel operation of several inverters is possible and offers modularity and flexibility enabling an
optimum dimensioning of your system according to your energy requirements. Working together,
these different devices have a synchronised behaviour for a better management of the battery and
of the solar resource. The next3 is available in models without the solar charger or without the AC-
transfer to fit in various types of systems.
Please read this manual carefully to ensure the perfect start up and operation of your system. It
contains all the necessary information regarding the operation of the next3 charger. The installation
of such a system requires special expertise and may only be carried out by qualified personnel
familiar with the local standards in force.
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