A dedicated medium-voltage solution (up to 35 kV) designed to enhance the power supply reliability and energy efficiency of urban distribution networks. The design emphasizes harmonic mitigation, strong anti-interference performance, and operational stability.
Why Urban Distribution Networks Require Dedicated Distribution Equipment
Traditional distribution equipment is prone to faults under the complex power scenarios of cities, such as large load fluctuations and numerous harmonic sources. We address these key challenges:
Harmonic Management
Non-linear loads, such as urban buildings and EV charging stations, generate harmonics. Our distribution equipment is equipped with filtering modules and anti-interference structures to prevent grid pollution and equipment overload.Adaptation to Complex Scenarios
From high-density urban areas to aging neighborhoods, we use high-protection-grade enclosures and intelligent temperature control designs to withstand high loads, humidity, electromagnetic interference, and other challenging environments.Improving Power Supply Efficiency
With high-efficiency energy conversion design, our equipment reduces distribution losses, lowers long-term operating costs, and increases load capacity to accommodate growing urban electricity demand.
Dedicated Products for Urban Distribution Networks
From standalone distribution equipment to intelligent prefabricated substations, we provide cities with the core hardware tailored for their power grids.
SCB14 Series Dry-Type Distribution Transformer● Fire-Resistant / Flame-Retardant
● Low Maintenance Costs
● Suitable for Indoor Distribution in High-Rise Residential and Commercial Buildings
SZ20 Series Oil-Immersed Distribution Transformer● Up to 35 kV / 2500 kVA
● Dual Separate Windings
● Designed for Main Distribution Networks in High-Density Urban Areas
YB-CD Series Pole-Mounted Distribution Transformer● Compact, Pole-Mounted Design
● IP44 Outdoor Protection (Suitable for Open-Air, High/Low Temperature Environments)
● Supports Decentralized Power Supply for Urban Villages, Suburban Residential Areas, and Scattered EV Charging Stations
ZGS-CD Series Box-Type Distribution Transformer Xiangjiang Huafu, Jiangyin City● Complies with National Distribution Standards
● Compact and Safe Design
● Designed for Distribution Upgrades in Aging Residential Communities
Besides Saving Space, What Other Advantages Do These New Transformers Offer?
Absolutely. For example, in an old residential community in Xicheng District, Beijing, a buried-type box substation was used to replace the original outdoor transformer. The equipment was installed in an underground chamber about 1.5 meters below ground, with only a landscape panel visible on the surface. This approach neither occupied parking spaces nor disrupted the community’s environment.
In addition, thanks to the plug-and-play prefabricated design, the renovation period was reduced from two months to just one week, causing minimal disturbance to residents.
Designed for Urban Distribution Network Performance
Load-Adaptive Voltage Regulation
Equipped with an intelligent voltage regulation module, the transformer can respond in real time to urban distribution network fluctuations, such as concentrated fast charging of EVs or peak-valley load changes in commercial buildings (e.g., morning and evening peaks). It automatically fine-tunes the output voltage with ±0.5% accuracy, preventing over- or under-voltage at end users and adapting to dynamic changes in city electricity demand.
Featuring a low-noise core and vibration-damping base, transformer operating noise is kept below 45 dB — equivalent to normal conversation. The vibration-isolation structure further minimizes vibration transmission, making the equipment suitable for installation in noise-sensitive urban areas such as residential neighborhoods, hospitals, and schools.
Rigorous Quality Assurance
Integrated sensors for temperature, humidity, partial discharge, and oil-immersed systems enable real-time monitoring of operating conditions. Data is directly connected to the urban distribution network dispatch platform, allowing early warnings for overheating, insulation aging, and other faults, thereby reducing unplanned downtime in city distribution networks.
Rated Voltage | Core Performance | Environment (Adapted to Complex Urban Scenarios) | |||
Low Voltage Input | 0.22 / 0.38 kV | Vector Group | Dyn11 | Ambient Temperature | -20°C to +45°C |
MV Output | 10 / 20 kV | Impedance | 4.0% – 6.0% | Altitude | Up to 1000 m |
Tapping Range | ±2 × 2.5% | Losses | Energy Efficiency Class 2 or Above | Protection | IP54 / C5-M |
Case Studies
Hongdou Xiangjiang Huafu, Jiangyin City● 12 units of SCB14-800/10
Zhejiang Anqiao Parcel Public Rental Housing● 8 units of SCB14-630/102
● 6 units of SCB14-1250/10
