11kV 20kV 35KV Pad Mounted Transformer(Prefabricated Substation)

Product overview:

The ZGS-13 Series Pad Mounted Transformer delivers a cost-effective, high-reliability, and intelligent solution for urban power distribution. This 250 kVA pad mounted transformer integrates a transformer, switchgear, fuses, tap changers, low-voltage distribution devices, and auxiliary equipment, supporting configurations for energy metering, reactive power compensation, low-voltage shunting, and more.

Designed for 50Hz/60Hz AC systems with a maximum operating voltage of 38.5kV, it suits diverse applications in industrial parks, urban residential areas, commercial centers, high-rise buildings, and other urban infrastructure.

Widely exported to North America, East Asia, Southeast Asia, and the Middle East, the series offers OEM/ODM services to meet customized needs. It complies with international and domestic standards, including ANSI C57, IEEE, DOE, CSA, IEC 60067, GB 1094, GB 17467-2010, GB/T 14048.8.1, and GB 4208.

Product Advantages

Cutting-Edge Technology

• Fully Enclosed Insulation: Ensures safe, reliable operation with the structure isolating internal components from external hazards.

• Optimal Performance: Features low loss, noise, and temperature rise, coupled with exceptional overload capacity and sudden short-circuit resistance.

• Flexible Configuration: Supports both terminal and ring network systems, enabling easy conversion to enhance power supply reliability.

• Cost-Efficient Operation: Requires minimal maintenance, offers user-friendly operation, and reduces overall equipment costs.

Enclosure Design

• Premium Materials: Constructed from cold-rolled high-quality hot-dip galvanized steel sheets for corrosion resistance.

• Precision Manufacturing: Laser CNC cutting, drilling, and bending ensure mm-level processing accuracy.

• Durable Coating: Surface treated with electrostatic spray paint, guaranteeing 30+ years of anti-aging performance.

• Core Component: Integrates low-loss oil-immersed transformers manufactured by WONE Electric for stable energy conversion.

Processing & Assembly Standards

• Skilled Workforce: Assembly technicians undergo at least 6 months of specialized training.

• Automated Wiring: Secondary circuits are cut by automatic equipment to ensure wiring reliability.

• Torque Control: Bolts are tightened with power tools to meet precise torque specifications.

• Busbar Fabrication: Copper busbars are CNC-punched and bent for consistent conductivity.

• Rigorous Testing: Comprehensive pre-delivery inspections ensure seamless on-site operation.

Company Strengths

• Certifications: Holds authoritative credentials including ISO, CE, CB, UL, etc.

• Quality System: Implements a perfect SQA management system to maintain product excellence.

• Comprehensive Services: Provides quick quotation, electrical design support, and OEM/ODM customization.

• Logistics Efficiency: Ensures short lead times and global delivery capabilities.

• After-Sales Support: Offers a full-service warranty system, including factory visits for quality verification.

Product parameters:

Rated Voltage: 10kV, 11kV, 13.8kV, 20kV, 33kV, 34.5kV, 35kV
Maximum Operating Voltage: 38.5kV

Operating Conditions

Temperature Parameters

• Maximum daily temperature: 40°C

• Minimum daily temperature: -25°C

• Maximum daily temperature difference: 25K

• Average temperature of hottest month: 30°C

• Maximum annual average temperature: 20°C

• Average daily relative humidity: ≤95%

• Average monthly relative humidity: ≤90%

• Altitude: ≤1000m

• Solar Radiation Intensity: 0.1W/cm²

• Maximum Ice Thickness: 10mm

• Wind Speed (10m Height, 10min Average): 35m/s

• Ground Horizontal Acceleration: 2m/s²

• Installation Environment: Outdoor

• Pollution Grade: Ⅲ

Ordering Instructions

When placing an order, customers are required to provide the following information to ensure precise customization:

Electrical Diagrams

Main loop scheme di:agram and secondary loop system diagram.

Auxiliary circuit electrical schematic diagram and wiring terminal layout.

Mechanical Drawings:

Equipment layout drawing, combination drawing, and floor plan.

Component Specifications:

Brand, model, specification, and quantity of main electrical components.

Cabling Details:

Incoming and outgoing line configurations and cable specifications.

Surface Finishing:

Equipment surface color (specified by RAL chromatic number).

Special Requirements:

Any additional customizations can be negotiated with WONE Electric for tailored solutions.