Champions of the middleweights.
The transformerless string inverter Powador 7900.

Powador 7900 with a maximum AC power of 6,650 VA. As a single unit suitable for PV installations with a generator power up to 7,900 W.

All Powador 7700 to 9600 units are equipped with digital controllers so that they can be used internationally. The appropriate country settings can easily be selected on-site; the country-specific settings are stored in the software, so the inverters can be quickly and easily installed anywhere in the world. The menu language can be selected independently from the country-specific settings. The units also comply with the German Low Voltage Directive and the Medium Voltage Directive.

All three units include transformerless topology without a step-up converter. DC switch is already integrated. This provides maximum safety and reliability for the system operator and makes the installer’s job easier.

These inverters are designed as a trio, with each unit feeding into one of the three phases. This allows each unit to optimally utilise the voltage range of a photovoltaic system that has been divided into three sub-generators.

The integrated Sym-Bus ensures that any potential asymmetry does not exceed the maximum permitted limit of 4.6  kW, even when there is a fault in a unit. They represent an alternative to central inverters (depending on the system design). Since all of our transformerless string inverters can also be combined with one another as required, they allow you almost unlimited freedom in planning, from 2 kW up to the megawatt class.

Additional information:

- KACO Powador 7900 Inverter Technical data
- KACO Powador 7900 Inverter User manual