| Brand | ROCKWILL |
| Model NO. | 11kV 20kV 35KV Pad Mounted Transformer(Prefabricated Substation) |
| Capacity | 2500kVA |
| Series | ZGS |
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
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.
