TSTY Integrated Unit PV Inverter Step Up for Utility Scale Solar Farm Grid Connection

TSTY photovoltaic inverter step‑up integrated unit – compact, fully sealed, IP54/IP68, for solar farms. Converts DC to AC and steps up to 10kV/35kV. CE, IEC, UL, ISO, SASO certified.

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Product Description

Technical Specifications

Product Advantages

Why TSTY

TSTY Photovoltaic Inverter Step‑Up Integrated Unit – Reliable Grid Connection for Solar Power Plants

The TSTY photovoltaic inverter step‑up integrated unit is a high‑voltage/low‑voltage prefabricated substation specially designed for renewable energy power generation systems. It integrates high‑voltage switchgear, the step‑up transformer body, protective fuses (all housed in an oil tank for oil‑immersed versions), low‑voltage switchgear, and auxiliary equipment into a single, fully enclosed enclosure. This unit receives the AC output from photovoltaic inverters, steps up the voltage to 10kV or 35kV, and delivers clean energy to the grid via medium‑voltage lines. It is the ideal supporting equipment for centralized and distributed solar farms, significantly simplifying system architecture and accelerating project commissioning.

Feature	Description
Integrated Design	Combines inverter interface, step‑up transformer, HV/LV switchgear, and monitoring in one enclosure – reduces footprint and civil works.
High Protection	Fully sealed enclosure. HV/LV compartments reach IP54, transformer tank (oil‑immersed) reaches IP68 – dustproof, moisture‑proof, and submersible.
Efficient Cooling	External plate‑type radiator for easy assembly and maintenance. Natural oil circulation (ONAN) or forced air (ONAF) options.
Strong Environmental Adaptability	Special shot‑blasting and anti‑corrosion treatment resists UV, salt spray, sandstorms, and extreme temperatures (-40°C to +55°C). Suitable for deserts, coasts, and high altitudes.
Intelligent Monitoring	Transformer tank can be equipped with pressure gauge and thermometer with communication interface; load switch can include travel switch. Enables remote monitoring, operation, and maintenance via SCADA or cloud platform.
High Breaking Capacity	Low‑voltage side uses advanced intelligent circuit breakers and moulded case switches, offering excellent protection and high breaking capacity.
Safety & Reliability	Transformer oil serves as insulating medium for 10kV/35kV components, reducing safety distances. Oil is fully isolated from atmosphere, minimizing oxidation and moisture ingress.

Space Saving – Compact structure, small footprint, up to 50% land saving compared to conventional substations.
Fast Deployment – Factory pre‑assembled and tested. On‑site installation requires only simple pad preparation and cable connection.
Low Operating Cost – Maintenance‑free design for dry‑type option; oil‑immersed version requires only periodic oil inspection.
Remote Management – Real‑time data acquisition, fault alarming, and remote control support unattended operation.
Global Certifications – Compliant with CE, IEC, CQC, SGS, GOST, ISO9001, ISO14001, and SASO standards, ensuring grid acceptance worldwide.

Applications

Centralized PV Power Plants – Serving as step‑up nodes, connecting multiple PV arrays to the 35kV or 110kV grid.
Distributed PV Projects – Suitable for industrial and commercial rooftops, agricultural photovoltaic systems, and carport solar installations.
Harsh Environments – Customized designs for plateaus, deserts, coastal areas, and regions with high humidity or sandstorms.
Hybrid Solar + Storage – Can be combined with battery energy storage systems (BESS) for smoothing output and peak shaving.

With over 30 years of power equipment manufacturing experience, a 250,000㎡ smart factory, and a CNAS‑accredited testing laboratory, TSTY delivers high‑quality, certified substations to more than 80 countries. Our overseas offices in Zambia, Ethiopia, Kazakhstan, Colombia, and Italy provide local technical support and rapid spare parts supply. Every TSTY European type PV inverter step‑up integrated unit is backed by a 1‑year warranty and 24/7 remote assistance.

Send your project specifications (capacity, site conditions, grid voltage) for CAD drawing and quotation within 48 hours.