Transformers
Substation Transformer
In-Depth Analysis
Comparative Analysis of Efficiency and Loss
Compared to the industry average, transformers exhibit lower losses and higher efficiency across the entire load range.
Load Efficiency Comparison(%)
No-load Loss Comparison(W)
High-efficiency Core Design
High magnetic permeability and low loss silicon steel sheets are used and processed by special process to reduce hysteresis loss and eddy current loss and improve conversion efficiency.
Multiple Protection Systems
IP65 protection grade design combines multiple protection measures such as anti-corrosion, anti-UV, anti-condensation and anti-small animal intrusion.
Ultra-low Noise Technology
A special shock-absorbing structure, low-noise fans, and optimized heat dissipation design ensure operating noise is far below industry standards.
Intelligent Cooling System
The heat dissipation system with adaptive temperature control automatically adjusts the heat dissipation efficiency according to the load and ambient temperature to reduce energy consumption.
Safety Wiring System
Insulated protective cover and anti-misoperation design ensure personnel safety during installation and maintenance and reduce accident risks
Intelligent Monitoring
An optional remote monitoring system is available to monitor operating status, temperature, load and other parameters in real time, and supports fault warning and remote diagnosis.
Environmental Adaptability Analysis
Substation Transformers have been rigorously tested and can operate stably under various harsh environmental conditions.
Temperature Range
-40℃ ~ +55℃
Can work normally in extreme high and low temperature environments
Humidity Adaptation
0 ~ 100% RH
Including condensation environment, no frost requirement
Seismic Resistance Level
IEC 60068-2-57
Suitable for earthquake-prone areas
Altitude
≤3000m
More than special design
Why Choose Us
Types Of Transformer Substation
Step-up substations increase voltage for long-distance transmission, while step-down substations reduce voltage for end users. Each substation transformer, often designed as an oil immersed transformer, ensures safe, efficient, and stable power delivery across industrial, utility, and grid applications.
Substation Transformers Manufacturer
We manufacture a wide range of power transformers and distribution transformers, including oil-immersed substation transformers built to meet IEC, IEEE, and ANSI standards. With advanced production technology, strict quality testing, and customized voltage configurations, NPC Electric ensures stable operation, minimal energy loss, and long service life. As a professional substation transformer manufacturer, we are committed to delivering dependable products and technical support to customers worldwide.
Substation Transformer Design
Whether used as a power transformer for transmission networks or a distribution transformer for local grids, advanced insulation, and protection systems guarantee performance and low energy loss. A well-designed three phase substation transformer delivers maximum efficiency and consistent operation even under heavy load conditions.
Strict Transformer Testing & Quality Control
Our testing process follows international standards such as IEC, IEEE, and ANSI, covering parameters like load loss, temperature rise, insulation resistance, and oil quality. Every unit is inspected using advanced equipment and can be verified by third-party agencies like SGS or BV. With our strict transformer quality control, customers receive products that guarantee efficiency, safety, and long-term durability in any environment.
Product Show
Testing and Certification
Bare Cable Test Report
SGS Inspection Report
Certificate of Acceptance
ISO Quality Certificate
ISO Environmental Certificate
ISO Occupational Certificate
UL Laboratory Certificate
UL Product Certificate
Project Cases
Project Cases
CompletedProvide stable and reliable power conversion solutions for the smart factory to meet diverse production needs.
Country:Mexico
Model:220kVA Substation Transformer x 2
Guyana Power & Light Inc
CompletedEnsure the power safety of surrounding residents and meet daily work needs
Country:Guyana
Model:13.8kV - 0.48Y/0.22kV, 3MVA Substation Transformer x 5
Surinam Factory
CompletedNPC transformers provide safe, efficient, and reliable power distribution in Surinam.
Country:Surinam
Model:750VA Substation Transformer x 5
Technical Advantages
FAQ From Customers
-
What is a substation transformer?
A substation transformer is a critical component in an electrical substation that steps voltage up or down between transmission and distribution systems. It allows efficient power transfer from high-voltage transmission lines to lower-voltage distribution transformers used in residential, commercial, and industrial applications. Most substation transformers are designed as oil immersed transformers for better cooling and insulation performance. -
How many transformers are in a substation?
The number of transformers in a substation depends on its size, capacity, and network design. A small distribution substation may have one or two substation transformers, while large power substations can include multiple units operating in parallel to handle higher load demands. Redundancy is often built in to ensure reliable power supply during maintenance or peak demand. -
What are the four types of transformers?
The four main types of transformers used in power systems are:
1. Power transformers – for high-voltage transmission networks.
2. Distribution transformers – for local energy distribution.
3. Instrument transformers – for measurement and protection.
4. Isolation transformers – for safety and equipment protection.
Among these, oil immersed transformers are the most common type used in substation transformer design due to their high efficiency and durability. -
Why do we need a substation transformer?
A substation transformer is essential for voltage regulation and safe power transmission. It converts high-voltage electricity from transmission lines to lower levels that can be distributed through distribution transformers to consumers. Without substation transformers, energy losses during long-distance transmission would increase dramatically, reducing overall grid efficiency and reliability. -
What is inside a substation transformer?
Inside a substation transformer, you’ll find a magnetic core, primary and secondary windings, insulating oil, bushings, and a cooling system. The oil immersed design helps regulate temperature and prevent electrical faults by providing insulation and heat dissipation. This internal structure ensures safe, stable, and efficient performance under high-voltage operating conditions in modern electrical substations.