Customizable 12kV 40.5kV Photovoltaic Box-Type Prefabricated Substation

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Key attributes

Brand	Vziman
Model NO.	Customizable 12kV 40.5kV Photovoltaic Box-Type Prefabricated Substation
Rated voltage	40.5kV
Rated frequency	50/60Hz
Rated capacity	3150kVA
Series	ZGS-ZG

Product descriptions from the supplier

Description

Box Type Prefabricated Substation Overview

The pad-mounted transformer is a dedicated Photovoltaic Prefabricated Substation and a new type of Box Type Prefabricated Substation, integrated and assembled from core components including transformer body, high-voltage electrical module, low-voltage electrical module and cabinet enclosure. As a professional power distribution device adapted to new energy scenarios, this Photovoltaic Prefabricated Substation is mainly applied in the power collection and voltage conversion links of photovoltaic power stations and wind farms, enabling efficient step-up grid connection and local power distribution of new energy electricity. The Box Type Prefabricated Substation features integrated modular design, perfectly matching the operational characteristics of new energy power generation systems and providing reliable power conversion support for photovoltaic and wind power projects of all scales.

Photovoltaic Prefabricated Substation Core Feature

Triple-Unit Layout Structure：The Photovoltaic Prefabricated Substation adopts a triple-unit modular zoning design, clearly divided into high-voltage compartment, low-voltage compartment and transformer body functional areas. This design ensures independent operation safety of each module for the Box Type Prefabricated Substation, and greatly facilitates later operation, maintenance, inspection and component replacement, reducing on-site maintenance workload.
Flexible High-Voltage Compartment Configuration：The high-voltage compartment of the Photovoltaic Prefabricated Substation is equipped with a standard high-voltage cabinet, which can be flexibly configured with load switch-fuse combined electrical cabinet or circuit breaker cabinet according to project needs. This flexible configuration makes the Box Type Prefabricated Substation adapt to medium-voltage power distribution scenarios and high short-circuit protection requirements respectively, matching high-voltage side solutions of new energy stations of different scales.
Standardized Low-Voltage Compartment Design：The Photovoltaic Prefabricated Substation uses industry-proven GGD-type AC low-voltage switchgear in its low-voltage compartment, following layered, functional and compartmentalized layout principles. It orderly arranges power distribution, control and protection modules, ensuring standardized wiring for the Box Type Prefabricated Substation and improving operational stability and maintenance convenience of the low-voltage side circuit.
Efficient Heat Dissipation Design：This Photovoltaic Prefabricated Substation adopts an oil-immersed transformer structure, with the transformer body placed outside the cabinet enclosure for natural heat dissipation. This structural design fundamentally solves the heat dissipation problem of the equipment, relying on natural air flow and ambient temperature to quickly dissipate heat, and ensures long-term stable outdoor operation of the Box Type Prefabricated Substation even under high-load working conditions.
Wide Capacity Coverage：The Hua-style Photovoltaic Prefabricated Substation offers a capacity range from 630 kVA to 4000 kVA, which can flexibly match photovoltaic and wind power projects of different installed capacities. The wide capacity coverage makes the Box Type Prefabricated Substation fully cover the power distribution needs from distributed small-scale new energy stations to centralized large-scale bases, with strong project adaptability.

Photovoltaic Prefabricated Substation Technical specifications

Serial Number	Parameter Name	Unit	Parameter(s)
1	Rated Voltage High Voltage Side Low Voltage Side	kV	ZGS**-Z.F (Wind Power) 12, 40.5 0.4, 0.69, 0.8, 1.14
2	Maximum Substation Rated Capacity (Rated Capacity of Transformer)	kVA	1600 ~ 4000
3	Insulation and Dynamic Thermal Stability		As per JB/T 10217-2013
4	Rated Frequency	Hz	50, 60
5	Rated Power Supply Voltage for Auxiliary and Control Circuits	V	AC220, DC220
6	Rated Power Supply Frequency for Auxiliary and Control Circuits	Hz	50, 60
7	Wood Forming Method		Pinyin-shaped or Character-shaped (likely referring to physical configuration, e.g., "pin-shaped" or "character/box-shaped")
8	Cooling Method		Forced Air Cooling or Natural Air Cooling (Air-cooled or Self-cooled)
9	Enclosure Protection Class High & Low Voltage Room Transformer Room		IP44D IP68

Photovoltaic Prefabricated Substation Adaptive Working Scenarios

Ground-Mounted Solar Farm Environments：The Photovoltaic Prefabricated Substation is suitable for open-air outdoor sites such as desert, plain and hilly solar parks, with resistance to high temperatures up to 55℃, low temperatures down to -40℃, dust and sand, fully meeting the long-term outdoor operation needs of large-scale photovoltaic power plants for the Box Type Prefabricated Substation.
Roof-Top Distributed Photovoltaic Scenarios：The Photovoltaic Prefabricated Substation has a compact structure that fits the limited roof space of industrial factory and commercial building roofs, with IP54/IP65 protection grade. It can resist rain, snow and urban atmospheric corrosion, making the Box Type Prefabricated Substation the ideal power distribution choice for distributed rooftop photovoltaic projects.
High-Altitude Photovoltaic Project Areas：Optimized for high-altitude regions with altitude ≤3000m above sea level, the Photovoltaic Prefabricated Substation has enhanced insulation performance to adapt to low air pressure conditions. This optimization ensures the stable operation of the Box Type Prefabricated Substation in plateau photovoltaic projects such as western China’s plateau solar farms.
Coastal Photovoltaic Power Generation Zones：The Photovoltaic Prefabricated Substation is designed with anti-salt-spray coating and sealed enclosure, which can withstand high humidity, salt-laden air and marine atmospheric corrosion. It is suitable for coastal solar farms within 5km of the coastline and offshore floating photovoltaic systems, and the corrosion-resistant design extends the service life of the Box Type Prefabricated Substation in marine environments.
Low-Attendance/Unattended Sites：Tailored for remote or unattended operation scenarios common in large photovoltaic bases, the Photovoltaic Prefabricated Substation features high operational reliability and low maintenance demand, adapting to environments with limited on-site maintenance resources. Its stable performance matches the decentralized layout of photovoltaic power stations, and the Box Type Prefabricated Substation can realize long-term unattended stable operation.

FAQ

Q: How does this customizable photovoltaic box-type substation ensure stable operation in extreme solar farm environments, such as deserts or plateaus?

The substation is engineered with environment-adaptive designs to guarantee stable performance. For desert regions, it features dust-proof enclosures and high-temperature-resistant components to withstand intense sunlight and sandstorms. For plateau areas (≤3000m above sea level), we upgrade the insulation system to compensate for low air pressure and reduce partial discharge risks. Moreover, the customizable temperature control modules (e.g., forced air cooling) can be added to handle extreme temperature fluctuations, ensuring consistent power conversion for photovoltaic systems.

Q: What customization options are available for this photovoltaic box-type prefabricated substation to fit different solar project needs?

We offer a range of targeted customizations for diverse photovoltaic scenarios. You can tailor the capacity within a flexible range to match distributed or utility-scale solar farms, choose enclosure protection levels (such as IP54 for general outdoor use or IP65 for harsh environments), and add specialized components like anti-salt-spray coatings for coastal projects or enhanced insulation for high-altitude installations. Additionally, we can optimize the internal layout to integrate smart monitoring systems for remote operation and maintenance.

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Model

ZGS-ZG-40.5/3150

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