For the implementation of the PV power plant were used mono-crystalline modules type Sinski PV SPV 180M-24 with nominal power of 180 Wp and module voltage of V_MPP = 36V. The PV power plant consists of 975 modules, forming 18 plates, as follows: 11 plates with 65 modules, 4 plates with 52 modules, 1 plate with 26 modules and 2 plates with 13 modules, all with an inclination of 25°.

The generated electricity is fed to 15 inverters and to each inverter are connected 5 strings, consisting of 13 serially-connected modules.

Both end modules of each string with DC cable RADOX Solarcable single core 1 х 4 мм²cable are connected to a DC switchboard, equipped with PF10 8A gR fuses – one on each pole. DC switchboard, with DC cable RADOX Solarcable single core 1 х 6 mm² cable is connected to the inverter input.

For this project were selected SMA Technologies inverters, Sunny Mini Central SMA SMC 11 000 TL model.

The inverters are designed, so they can work only in parallel with the power supply network. In case of removing or changing the parameters outside the limits of the AC network, to which the inverter output is connected, it will stop working automatically and avoids work in autonomous mode. After a set period of time there will be another attempt for switching on, but if the deviation is critical for the inverter operation, then the switching off remains until the elimination of the cause. The independent network parameter control system „SMA grid guard” takes care about all this.

The inverters are grouped into five groups by three and each is connected via CBT-c 2 х 16 mm² cable to a properly sized circuit breaker into the relevant intermediate switchboard.

The intermediate switchboards are connected to a properly sized circuit breaker into the main switchboard.

The earthing system consists of 29 earthing devices, combined in a common circuit. The earthing circuit consists of a galvanized 40/4 mm steel bar.

For lightning protection system was chosen early streamer emission lightning conductor SCHIRTEC – A E.S.E., with shaft height of 8.40 meters.

Sunny Web Box monitoring and control device is installed