VT-80 VarioTrack MPPT
VT-80 VarioTrack MPPT
Solar charge controllers are used when solar panels are used to charge a battery bank. They regulate the high DC voltage generated by solar panels (PV generators) to a nominal value acceptable to a battery bank; eg 12V, 24V and 48V. Each controller will have a maximum current capability, so a controller is selected based on the maximum potential charge current that could be generated by the solar panels.
The VarioTrack family consists of two models; one which will handle a max charge current of 65A and one which can handle 80A. With the MPPT solar charge controllers of the VarioTrack series, each installation is the best it can be with a maximized battery life due to an optimal charge.
A VarioTrack charge controller uses a sophisticated algorithm that ensures the maximum available power from the solar PV modules is delivered to the batteries.
The device meets the highest industry standards and with its IP54 rated rugged aluminium casing, it is well suited for harsh environments. In addition, it is fully protected against reverse polarity.
The VarioTrack is designed to be used with all types of solar systems and the combination of the VarioTrack and an Xtender results in a highly efficient system. The Studer CANBUS communication between the devices enables synchronisation of the battery charge cycle regardless of the technology (lead acid, lithium Ion, nickel, etc). Unlike other combined hybrid solutions, the VarioTrack with Xtender allows independent selection of the appropriate capacity of solar PV and inverter charger, resulting in a more accurately defined system.
Features and performances
Ensures optimal energy production
- Tracking efficiency; > 99%
- Conversion efficiency; > 99%
- 4 step charging for longer battery life
- 8 predefined battery charge curves as standard
- Free programming of the battery's load curve with the RCC-02/-03
- Low self-consumption; < 1W in night mode
- Protection against incorrect wiring
- Protection against reverse polarity
- Fully configurable
- IP54 enclosure
- Comprehensive display, programming and data logging with the RCC-02/-03
- Up to 15 VarioTrack in parallel on the same communication bus
- Communication via Xcom-LAN, Xcom-GSM, Xcom-SMS; (optional)
- Compatible with all PV systems
- Optimal usage in an Xtender system with a synchronized battery management
Important - if you use solar controllers to supply a battery bank, which then delivers power to an inverter or inverter charger - BEWARE - over voltage of the battery bank from a failed cheap solar controller could seriously damage the inverter! Only use good quality charge controllers like Studer VarioTrack and VarioString units.
To cope with larger installations Studer charge controllers can be paralleled. As the controller is now effectively acting as a battery charger, good solar regulators produce an output which is similar to a modern switchmode charger - the output is mutli-staged and varies according to the state of charge the batteries. There are different ways controllers do this and the most common for small regulators is a system using (PWM) Pulse Width Modulation technology. However, on anything larger than a small single or double panel installation, we want to extract the maximum energy from the solar installation. Here, the better way is to use a technology called Maximum Power Point Tracking (MPPT). The Studer VarioString and VarioTack ranges of solar charge regulators are high efficiency MPPT controllers which can handle power outputs up to 105kW (multiple units used in parallel).