FAQ

Frequently Asked Questions

You will find answers to frequently asked questions about our services, and general inquiries here.

If you cannot find an answer to your specific question, please do not hesitate to contact our customer support directly.

Our distribution is done exclusively through the specialist electrician and installation companies. This guarantees the correct planning and design of the components and the professional assembly, mains connection and commissioning.

If you choose the option with our installation, the system will be delivered to you by a team that will also perform the installation.

Please register in our system by filling out all the required fields and we will get in touch with you with further steps.
In Europe, there are many different funding programs that vary greatly depending on the country. For Austria, you can get an overview of the funding opportunities in the funding compass of the association PV Austria: https://pvaustria.at/foerderungen/

Yes this is possible. If currently no batteries are installed, but the option for later should exist then the Q•WALL hybrid inverter is the right device. This can later be upgraded to an energy controller with batteries with additional software.

Yes, you can keep your existing inverter on grid

Yes, all inverters are registered on the TOR list.

All price are displayed on website, if you are professional company (electrician, solar installer) and you need invoice without VAT, please contact us before you place an order

Usually all products are in stock and can be delivered immediately. An exact info about the availability is available for registered customers in our online ordering system.

In backup mode or with the zero export setting, each three-phase Q•WALL/QCELL can permanently supply up to one third of its power per phase on the AC side without one of the other phases being loaded, e.g. a 10 kW device can supply a single-phase load with up to 3.3 kW if enough PV power and/or battery power is available.

In backup mode, the Q•WALL/QCELL can provide its nominal power permanently and for 10s up to 150% of the rated power. Again, the only requirement is that enough PV power and/or battery power is available. The battery power is only used if the PV power is not sufficient. If the PV power is greater than the AC-side requirement, the battery is charged (even in backup mode).

Three-phase current, e.g. for the operation of three-phase heat pump compressors, can also be provided in backup mode.
Black start capable: As soon as a specific battery charge level is reached, the backup supply will be automatically resumed. In this process, the learned load profile and the expected PV (photovoltaic) performance should also be taken into account. The final tuning of the individual functions for controlling the backup operation is not yet complete. With the next software update at the end of November, these functions will be activated.

No additional license is required for the Q•WALL DC Charger. However, the vehicle must be suitable for bidirectional charging and approved by the car manufacturer. It is best to clarify the details with your car dealer.

Tests are currently being carried out with various optimizers. Information on which optimizers the system can be equipped with will be available from around the end of September.

Parallel operation of PV and external generator is possible. In this case, grid is disconnected from the system and generator serves as the grid. Q•WALL automatically measures the voltage and frequency of generator and adjusts its output power to make sure its power not higher than the needed power by loads. Q•WALL and generator can provide power to loads at the same time.

Yes, SPDs are integrated on the DC and AC side. However, local standards and implementation regulations must be observed. In some cases, an additional SPD must be installed at the roof entry for cable lengths over 10 m on the DC side.