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SMA PV Inverter STP 17000TL – 15000TL

SMA 3 phase solar inverter 17kW and 15kW for solar pv systems

PV Inverter SMA STP17000TL - 15000TL

SMA STP 17000TL and 15000TL inverter

Sale of pv inverters SMA STP 17000TL and STP 15000TL, 3 phase and with 17kW and 15kW each model. Made in Germany and are recognized as the best quality solar inverter brand in the pv market. We are SMA distributors with our own technical support. 

These SMA models of pv inverter are suitable for self consumption and on gird systems.

Documentation related with the product:

The models SMA STP17000TL and 15000TL pv inverter have a standard product warranty of 5 years and are the perfect choice for medium-large photovoltaic installations in the commercial and industrial sector.

Thanks to its performance of 98.4%, it not only guarantees exceptionally high profits, but through its multistring concept combined with a wide range of input voltage, it also offers high flexibility of design and compatibility with many available pv modules .

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More information about the 3 phase inverter SMA STP 17000TL and STP 15000TL

We can also highlight more details which make the Sunny Tripower an excellent choice for any medium-sized photovoltaic installation, typically an industrial and commercial self-consumption facility :

High Efficience

  • Both models have a maximum efficiency of 98.4 %


  • DC surge arrester (SPD type II) can be integrated


  • Optional display
  • DC input voltage of up to 1,000 V
  • Multistring capability for optimum system design


  • Cutting-edge grid management functions with Integrated Plant Control
  • Reactive power available 24/7 (QonDemand24/7)

Basic concepts about a PV inverter?

Solar Inverter Performance:

The efficiency of any photovoltaic inverter is affected not only by the losses produced by switching but also by losses due to passive elements, such as transformers, filters, capacitors, etc. … Solar inverters generally have a full load efficiency of between 90 and 94% (or even more today) for low voltage input systems (400 V).

In general the efficiency of an pv inverter is higher in those with low void losses, and the efficiency increases if the DC input voltage of the solar panels grows.

Fundamental requirements:

The flow of electric energy normally always goes in the direction of charges, when a power outage occurs, the inverter has to stop and stop injecting into the power grid.

The basic requirements for any solar inverter such as SMA STP 17000TL and 15000TL inverter are:

  • The photovoltaic installation should be considered as part of a component of the electrical network.
  • The inverter must meet the required specifications of the electrical network.
  • The safety of operators must always be taken into account (there may be unknown active parts).
  • Photovoltaic installations should not deliver power to a power line without protections.
  • Disconnection of the inverter must be automatic as soon as a fault appears.
  • There must be an easy disconnect point (border switch) that is accessible to employees of the power company at any time.
  • The inverters must operate with a power factor equal to one.
  • Electrical isolation between the photovoltaic system and the grid must be carried out.
  • If the output signal of the inverter exceeds the predefined conditions for operation (over / under voltage, over / underfrequency) the inverter must be automatically disconnected from the grid.
  • The new connection will be enabled after a certain time (3 minutes normally), time that the control system and network protection waits to try a new connection.

Signal quality:

The two main technical issues to consider in an inverter, such as SMA STP17000TL and 15000TL, from the point of view of signal quality are: power factor and harmonic distortion.

The harmonic content in the output signal of an inverter for photovoltaic use is difficult to fix because there is not much information available. The effects of harmonic distortion on the electrical network itself and on the loads connected to it are not sufficiently studied and, finally, there are many difficulties in measuring the distortion obtained.

Within all specifications, the ones related with the current should be taken into account more than the voltage, since current harmonics are the most troublesome cause and because it is easier for the equipment manufacturer to demonstrate full compliance with the specification of current injection. This specification is usually given in terms of total harmonic distortion (THD). The magnitude representing any of the harmonics separately is called simple harmonic distortion (SHD) and is equally interesting for power companies.

The values ​​normally used for both distortions are 5% and 3% respectively.

Electrical isolation:

Another need of considerable importance in the connection with the electrical network is the obtaining of an adequate isolation. This can be obtained with a transformer located between the network and the inverter. Galvanic isolation is required for safety reasons.

Several regulations from EU countries indicate that a solar inverter can not be connected to the grid unless some form of isolation is provided. The self-generator and the electric company must use protections that can interrupt continuous fault currents. A fault in the inverter with continuous levels can saturate the distribution transformer of the electric company and cause service malfunction to other subscribers.

Both, the SMA Sunny Tripower 17000TL solar inverter and the SMA Sunny Tripower 15000TL meet these minimum requirements.

Electric Protection:

The SMA 17kW and 15kW pv inverter models includes control of the entire system. This includes detecting that the photovoltaic field has enough power to be able to connect to the grid, closing a contactor at that moment and starting to operate as soon as there is sun light. At night the inverter must be fully disconnected. The control logic of the photovoltaic inverter will include a protection system that detects abnormal operating situations such as:

  • Lack of continuous ground.
  • Abnormal conditions in the electrical network (voltage, frequency, etc.)
  • Losses in one phase.
  • Stop the solar inverter.
  • The inverter must be protected against voltage transients using varistors on the DC and AC side.

Feel free to contact with us if you need offer and pricing of SMA STP 17000TL and STP 15000TL solar inverter.