🔹 Detailed Professional Description

The ZCS Azzurro 3PH 25KTL-V3 is a three-phase grid-connected photovoltaic inverter designed for medium and large commercial and industrial solar installations. Manufactured by Zucchetti Centro Sistemi (ZCS), it belongs to the professional Azzurro line and combines high conversion efficiency, robust construction, and full compliance with European grid-connection standards.

Thanks to its transformerless (non-isolated) topology, the inverter ensures higher efficiency and a compact design, minimizing energy losses and improving overall system performance.

It supports a maximum DC input voltage of 1100 V and features a wide MPPT voltage range from 180 V to 1000 V, providing maximum flexibility in PV string configuration.

With a nominal AC output power of 25 kW and a maximum apparent power of 28 kVA, the inverter delivers stable three-phase 380/400 V output at 50/60 Hz, ensuring reliable and compliant grid injection.

The IP65-rated enclosure allows both indoor and outdoor installation, while the integrated active cooling system with forced ventilation guarantees reliable operation even in harsh environmental conditions, with an operating temperature range from -30°C to +60°C.

The unit complies with major European and international standards for grid connection and electrical safety.

🔹 Complete Technical Specifications

Model Information

• Model: ZCS Azzurro 3PH 25KTL-V3

• Manufacturer: Zucchetti Centro Sistemi (ZCS)

• Inverter Type: Three-phase, grid-connected, transformerless

🔌 DC Side (PV Input)

• Maximum DC input voltage: 1100 V

• MPPT voltage range: 180 – 1000 V

• Maximum input current: 3 × 40 A

• Maximum short-circuit current (Isc): 3 × 50 A

⚡ AC Side (Grid Output)

• Nominal AC output power: 25,000 W

• Maximum AC apparent power: 28,000 VA

• Nominal grid voltage: 3/N/PE – 380/400 V

• Nominal frequency: 50 / 60 Hz

• Maximum AC output current: 42.4 A

• Power factor: 1 (adjustable ±0.8)

🛡 Protection & Environmental

• Protection rating: IP65

• Protection class: Class I

• Overvoltage category: AC III / DC II

• Inverter topology: Transformerless (non-isolated)

• Operating temperature range: -30°C to +60°C

📜 Standards & Certifications

• VDE0126-1-1

• VDE-AR-N4105

• IEC 61727

• IEC 62116

• UTE C15-712-1

• AS 4777

• CE Marking

🔹 Key Features

✔️ Professional three-phase 25 kW inverter
✔️ High-efficiency transformerless technology
✔️ High DC voltage capability up to 1100 V
✔️ Wide MPPT range for flexible string design
✔️ Stable 380/400 V three-phase grid output
✔️ Adjustable power factor control
✔️ Integrated active cooling system
✔️ Robust IP65 enclosure for outdoor installation
✔️ Compliant with European and international grid standards