+86 18751738721
sales@unitatransformer.com
Megawatt‑Level Photovoltaic Step‑Up Box Transformer
Our megawatt-class PV step-up box transformer is a high-power prefabricated substation, specially developed for large centralized solar plants, state-owned new energy benchmark projects and large-scale PV EPC contracts. It suits various large-scale solar scenarios, including hundred-megawatt and gigawatt-level ground PV stations, desert PV, agro-PV, fishery-PV and mountain PV projects.
Designed fully in line with national grid connection and power acceptance standards, this equipment acts as the core unit for power collection, voltage boosting and stable power transmission. It supports long-term, full-load and high-efficiency operation for large new energy projects.
Optimized for Harsh PV Station Working Conditions
Large solar projects usually face frequent power fluctuations, multi-string parallel power generation and long-hour full-load operation. To solve these pain points, our box transformer adopts high-permeability low-loss core and optimized high-power winding structure.
This design effectively cuts no-load and load losses, stabilizes temperature rise and strengthens overload resistance. It greatly improves power generation consistency and grid-connection stability, perfectly meeting the strict requirements of state-owned projects on energy efficiency, operational stability and equipment service life.
Modular Four-Compartment Safety Structure
The transformer adopts an independent four-compartment layout, including a high-voltage room, transformer room, low-voltage room and measurement & control room. The partitioned structure delivers excellent insulation performance and high safety, simplifying on-site acceptance and daily maintenance.
Fully pre-assembled and pre-commissioned in the factory, the unit integrates high/low voltage switchgears, intelligent protection devices, lightning protection, forced cooling and remote communication modules. It greatly reduces on-site construction, wiring and debugging costs, matching the fast and modular construction needs of large PV EPC projects.
Strong Environmental Adaptability for Outdoor Use
Equipped with thickened industrial cabinet and multi-layer anti-corrosion spraying technology, this box transformer features dustproof, waterproof, anti-condensation, UV-resistant and extreme temperature resistance. It can operate stably in deserts, high-temperature and freezing areas, high-humidity and coastal salt-fog environments.
With an ultra-low failure rate and stable performance, it supports a full 25-year service life for photovoltaic power stations.
Intelligent Protection & Unattended Operation
The device is equipped with complete power-grade protection functions, such as anti-islanding protection, over/under voltage protection, overload and short-circuit protection, over-temperature locking and zero-sequence protection.
It supports full remote monitoring, signaling and control. It can seamlessly connect with grid dispatching and intelligent operation platforms, realizing unattended operation, real-time data monitoring and accurate fault location.
Contact us – Distribution transformer,Oil immersed transformer,Dry type transformer-Unita Electric
Complete Qualifications & Customization Service
All products comply strictly with national grid and new energy industry standards. We provide complete factory test reports, qualification certificates and type test documents, fully supporting project bidding, inspection, grid connection and final filing.
Standard models cover 1600kVA to 3150kVA, and non-standard customized solutions are available. It is the ideal step-up box transformer for large centralized solar stations and professional PV EPC projects.