Transformers
Transformer Equipments
Our comprehensive range includes transformer bushings, Buchholz relays, dehydrating breathers, pressure relief valves, oil level gauges, temperature indicators, and other essential transformer components.
Whether you need solutions for oil-immersed transformers or dry-type transformers, we provide durable, standards-compliant equipments that ensure safety, efficiency, and long service life. All products are manufactured to international quality standards and widely used in power plants, renewable energy projects, industrial facilities, and electrical networks.
Explore our full collection of transformer spare parts and maintenance accessories to optimize performance and minimize downtime. Trusted by engineers and procurement professionals worldwide for superior quality and competitive pricing.
Prefabricated Compact Substation
The Prefabricated Compact Substation is an integrated medium-voltage and low-voltage power distribution solution engineered for modern urban infrastructure, renewable energy systems, industrial plants, and commercial facilities. The equipment combines medium-voltage switchgear, distribution transformer, and low-voltage distribution panel into a compact steel enclosure, significantly reducing installation time and site construction costs while improving operational reliability.Designed for outdoor operation under demanding environmental conditions, the compact substation features corrosion-resistant housing, advanced insulation systems, and optimized ventilation structures to ensure stable long-term performance. Its modular architecture allows flexible transformer capacities, voltage combinations, and protection configurations to meet different regional grid requirements and project specifications. The unit supports fast deployment, simplified maintenance, and enhanced safety protection, making it an ideal choice for power utilities, solar farms, wind power stations, transportation infrastructure, data centers, and residential developments. With intelligent monitoring options and customizable internal layouts, the prefabricated compact substation provides efficient, safe, and scalable electrical distribution for modern power networks.
Prefabricated Box Type Transformer Substation
The Prefabricated Box Type Transformer Substation is a fully integrated power distribution system combining medium-voltage switchgear, distribution transformer, low-voltage distribution equipment, and intelligent control systems within a compact outdoor enclosure. Engineered for modern electrical infrastructure, the substation delivers efficient, safe, and stable power transformation and distribution for industrial facilities, renewable energy projects, urban developments, and utility networks. Its modular structural design significantly reduces installation time, civil construction requirements, and overall project costs while enhancing operational reliability and maintenance efficiency. The enclosure is manufactured using corrosion-resistant materials and advanced environmental protection technologies to ensure dependable performance under harsh outdoor conditions including high humidity, dust, salt spray, and temperature fluctuations. The substation supports multiple transformer capacities, flexible voltage ratings, intelligent monitoring functions, and customizable switchgear configurations to meet different regional standards and project specifications. With compact footprint advantages and scalable integration capability, the Prefabricated Box Type Transformer Substation is an ideal solution for modern smart grid systems and distributed energy applications.
33kV 630kVA Prefabricated Compact Substation
The 33kV 630kVA Prefabricated Compact Substation is a highly integrated medium-voltage power distribution solution designed for modern electrical infrastructure projects requiring reliable, space-saving, and efficient energy transformation. The substation combines 33kV medium-voltage switchgear, a 630kVA distribution transformer, low-voltage distribution panels, and intelligent protection systems within a compact outdoor enclosure, reducing installation complexity and minimizing civil construction requirements. Engineered for stable operation in demanding industrial and environmental conditions, the compact substation features a reinforced enclosure structure, advanced insulation technology, optimized ventilation systems, and corrosion-resistant surface treatment. The modular design improves transportation efficiency, shortens commissioning cycles, and simplifies future maintenance operations while ensuring long-term operational reliability. This 33kV 630kVA compact transformer substation is suitable for renewable energy integration, industrial facilities, mining operations, commercial developments, and urban utility distribution systems. Optional intelligent monitoring systems and remote communication interfaces support modern smart-grid applications and enable efficient power management for evolving electrical networks.
11kV 800kVA Prefabricated Compact Substation
The 11kV 800kVA Prefabricated Compact Substation is an advanced integrated power distribution system designed to provide safe, efficient, and reliable medium-voltage to low-voltage energy transformation for industrial, commercial, and infrastructure applications. The substation integrates 11kV medium-voltage switchgear, an 800kVA distribution transformer, low-voltage distribution equipment, and intelligent protection systems into a compact outdoor enclosure, significantly reducing installation space and on-site construction requirements. Built for continuous operation in demanding environments, the compact substation features a durable weather-resistant enclosure, optimized thermal ventilation structure, high-performance insulation system, and reinforced electrical safety protection. Its modular architecture simplifies transportation, accelerates installation, and minimizes maintenance complexity while ensuring stable long-term operational performance. The 11kV 800kVA compact transformer substation is suitable for utility distribution systems, renewable energy integration, manufacturing facilities, commercial complexes, and urban electrical infrastructure projects. With optional intelligent monitoring and remote communication functions, the substation supports modern smart-grid applications and improves operational efficiency across distributed power networks.
22kV 1000kVA Prefabricated Compact Substation
The 22kV 1000kVA Prefabricated Compact Substation is a modern integrated power distribution solution designed for medium-voltage electrical networks requiring high operational reliability, compact installation, and efficient energy transformation. The system integrates 22kV medium-voltage switchgear, a 1000kVA distribution transformer, low-voltage distribution equipment, and intelligent control devices into a single modular enclosure, significantly reducing installation complexity and project construction time. Manufactured using high-strength corrosion-resistant materials and advanced electrical insulation technology, the compact substation is engineered for stable outdoor operation under demanding environmental conditions. Its optimized structural layout improves heat dissipation efficiency, maintenance accessibility, and operational safety while minimizing installation footprint for urban infrastructure and industrial applications. The 22kV 1000kVA compact transformer substation is widely suitable for renewable energy systems, industrial production facilities, mining operations, commercial complexes, municipal distribution networks, and smart-grid infrastructure projects. With intelligent communication capability and flexible configuration options, the substation delivers reliable, energy-efficient, and scalable medium-voltage power distribution performance.
Outdoor Prefabricated Transformer Substation
The Outdoor Prefabricated Transformer Substation is an integrated medium-voltage power distribution solution designed for outdoor installation in industrial, commercial, utility, and renewable energy applications. The system combines medium-voltage switchgear, distribution transformer, low-voltage distribution equipment, and intelligent control systems into a compact prefabricated enclosure, providing efficient and reliable power transformation while minimizing construction time and installation costs. Engineered for harsh environmental conditions, the outdoor substation features a weather-resistant enclosure, corrosion-protected structure, advanced insulation technology, and optimized thermal ventilation system to ensure long-term operational stability. Its modular design allows rapid deployment, simplified transportation, and flexible installation while improving maintenance accessibility and operational safety. The Outdoor Prefabricated Transformer Substation supports multiple voltage levels, transformer capacities, and intelligent automation functions, making it suitable for utility distribution systems, renewable energy projects, urban infrastructure, mining facilities, transportation networks, and industrial manufacturing plants. With smart-grid compatibility and customizable configurations, the substation provides efficient and scalable electrical distribution performance for modern power networks.
Prefabricated Switchgear Substation
The Prefabricated Switchgear Substation is an integrated medium-voltage power distribution system designed to provide safe, efficient, and intelligent electrical control for utility networks, industrial facilities, renewable energy projects, and commercial infrastructure. The system combines medium-voltage switchgear, transformer equipment, low-voltage distribution units, and advanced protection systems within a compact prefabricated enclosure, significantly reducing installation time and civil construction requirements. Manufactured using high-strength corrosion-resistant materials and advanced insulation technology, the switchgear substation delivers stable outdoor operation under harsh environmental conditions including high humidity, dust exposure, temperature fluctuations, and coastal environments. Its modular architecture improves operational flexibility, maintenance accessibility, and transportation efficiency while supporting scalable electrical distribution requirements. The Prefabricated Switchgear Substation supports multiple voltage classes, intelligent monitoring functions, and customized protection configurations for modern smart-grid applications. The compact design optimizes installation space while ensuring reliable medium-voltage switching, power distribution stability, and enhanced operational safety for industrial, utility, and infrastructure projects.
High Voltage Prefabricated Transformer Substation
The High Voltage Prefabricated Transformer Substation is a fully integrated power distribution system designed for high-voltage transmission and medium-voltage distribution applications in utility networks, renewable energy facilities, industrial plants, and infrastructure projects. The system integrates high-voltage switchgear, power transformers, low-voltage distribution equipment, intelligent protection devices, and automation systems within a compact modular enclosure to provide reliable and efficient electrical power transformation. Engineered for demanding outdoor operating conditions, the substation features a reinforced corrosion-resistant enclosure, advanced insulation technology, optimized thermal management systems, and intelligent safety protection structures. The prefabricated modular design significantly reduces civil construction requirements, shortens installation time, and improves transportation efficiency while maintaining high operational reliability and electrical safety performance. The High Voltage Prefabricated Transformer Substation supports flexible voltage classes, transformer capacities, and smart-grid communication interfaces, making it suitable for modern utility distribution systems, renewable energy integration projects, mining operations, oil and gas facilities, and industrial manufacturing plants. With customizable electrical configurations and intelligent monitoring functions, the substation delivers scalable and energy-efficient power distribution performance for complex electrical infrastructure applications.
High Voltage Switchgear
NPC Electric high voltage switchgear delivers exceptional reliability and safety for modern electrical networks. Built with cutting-edge insulation technology and intelligent monitoring systems, this HV switchgear ensures seamless power distribution while protecting critical infrastructure from faults and overloads. Ideal for utilities, industrial plants, and renewable energy projects, it combines compact design with robust construction to minimize downtime and maximize operational efficiency in demanding environments.In-Depth Analysis
NPC Electric transformers equipments are built to deliver high efficiency, reliable performance, and advanced safety, helping businesses reduce energy costs while ensuring stable power supply. With future-ready adaptability for renewable energy and smart grid applications, they provide a sustainable and innovative solution for today’s and tomorrow’s power needs.
Comparative Analysis of Efficiency and Loss
Compared to the industry average, NPC 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.
Improved Magnetic Permeability
+15%
Reduced Iron Loss
-28%
Multiple Protection Systems
IP65 protection grade design combines multiple protection measures such as anti-corrosion, anti-UV, anti-condensation and anti-small animal intrusion.
Waterproof Performance
IP65
Anti-Corrosion Ability
15 years+
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.
Noise Reduction
-15dB
Suitability for Residential Areas
Excellent
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.
Heat Dissipation Efficiency
+40%
Temperature Stability
±2℃
Safety Wiring System
Insulated protective cover and anti-misoperation design ensure personnel safety during installation and maintenance and reduce accident risks
Insulation Grade
Class H
Safety Protection
IP2X
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.
Data Collection Frequency
one times a minute
Fault Warning Accuracy
98%
Environmental Adaptability Analysis
NPC transformers equipments have been rigorously tested and can operate stably under various harsh environmental conditions.
Temperature Range
-40℃ ~ +75℃
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
As a trusted partner in energy savings and the development of green energy solutions, NPC Electric has played a pioneering role in the development of national smart grids across multiple regions.
Superior Quality & International Standards
We are committed to delivering only the highest quality Transformer Equipments. All our products, including HV bushings, prefabricated transformers, HV switchgear, and voltage regulators, are manufactured under strict ISO 9001 quality management systems and fully comply with IEC, ANSI, and GB international standards. Each component undergoes rigorous testing such as power frequency withstand, partial discharge, and thermal stability tests before leaving the factory. With over 15 years of industry experience, we use premium materials like high-grade porcelain, epoxy resin, and corrosion-resistant alloys to ensure long service life and exceptional performance even in harsh environments. Choosing us means choosing safety, reliability, and peace of mind for your power projects.
One-Stop Comprehensive Solutions
We offer a complete range of Transformer Equipments and accessories under one roof. From HV bushings, Buchholz relays, and dehydrating breathers to full prefabricated transformers, HV switchgear, and voltage regulators, we provide integrated solutions for both new installations and maintenance projects. This one-stop service saves you time and cost while ensuring perfect compatibility between all components. Whether you need equipment for substations, renewable energy plants, industrial facilities, or urban power distribution, our professional team can deliver tailored packages that meet your exact technical specifications and project requirements.
Professional Technical Support & Customization
Our experienced engineering team provides full technical support throughout your project lifecycle. We offer product selection guidance, technical drawings, on-site installation support, and customized solutions according to your specific voltage, capacity, and environmental requirements. With advanced design software and a strong R&D capability, we can quickly develop special specifications for HV bushings, prefabricated transformers, and HV switchgear to meet unique project demands. Our experts are always ready to help you solve complex technical challenges in power transmission and distribution systems.
Reliable After-Sales Service
We stand behind every product we supply. Our professional after-sales team offers comprehensive warranty, rapid spare parts delivery, remote technical diagnosis, and on-site maintenance support. With a global service network and sufficient stock of common Transformer Equipments such as HV bushings and voltage regulators, we ensure minimal downtime for your operations. Many customers choose us repeatedly because of our responsive service, competitive pricing, and long-term partnership approach. We are not just a supplier — we are your trusted partner in power equipment.
Product Show
Explore the detailed design and practical application scenarios of NPC transformer equipment
Prefabricated Transformer
Prefabricated Transformer & Box Transformer
HV Bushings
Transformer Equipments - HV Bushings
LV, MV & MV Switchgear
High performance LV, MV & MV Switchgear
Electrical Transformer Coil
Electrical Transformer Coil For Power Transformer
Bushing Wells
Transformer Equipments - Bushings Well
Load Break Switcher
Transformer Equipments - Load Break Switcher
Voltage Regulator
Transformer Equipments - Single Voltage Regulator
Step Voltage Regulator
Transformer Equipments - Step Voltage Regulator
Testing and Certification
Tested with precision and certified to meet international standards as
well as strict industry requirements.
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
NPC transformers have been successfully applied in many projects and have been highly praised by customers.
Mongolia Industrial Park
CompletedProvide stable and reliable power conversion solutions for industrial parks to meet diverse production needs.
Country：Mongolia
Model：Three Phase Pad Mounted Transformer x 8
Dominican Factory
CompletedEnsure power security in nearby industrial parks and meet diverse needs
Country：Dominican
Model：NPC 450KV Power Transformer x 4
Dominican Electricity
CompletedDry-type transformers provide safe, efficient, and reliable power distribution in Dominican .
Country：Dominican
Model：NPC Dry Type Transformer x 6
Related Articles
Understand the product's characteristics, structure, and applications.
Technical Advantages
● 30+ years of manufacturing experience
● ISO and UL certified production
● Customized cable and transformer solutions
FAQ From Customers
-
What are Transformer Equipments?
Transformer Equipments refer to a wide range of accessories and components used for power transformers, including HV bushings, Buchholz relays, dehydrating breathers, temperature indicators, and oil level gauges. These essential parts ensure safe, efficient, and reliable operation of oil-immersed and dry-type transformers. -
What is an HV Bushing and why is it important?
HV Bushing (High Voltage Bushing) is a critical insulator that allows high-voltage conductors to pass through the transformer tank while maintaining electrical insulation. It prevents flashover and ensures safe power transmission. We offer premium porcelain and composite HV bushings up to 110kV. -
What is a Prefabricated Transformer?
A Prefabricated Transformer (also known as package substation or compact substation) is a factory-assembled unit that integrates transformer, HV switchgear, LV switchgear, and protection devices into one enclosure. It is widely used in urban power distribution, industrial parks, and renewable energy projects due to its compact size and fast installation. -
Do you supply HV Switchgear for transformers?
Yes. We provide HV Switchgear including SF6 gas insulated switchgear, vacuum circuit breakers, disconnectors, and load break switches. These are fully compatible with our transformers and prefabricated substations, meeting IEC standards for reliable power control and protection. -
What does a Voltage Regulator do in a transformer system?
A Voltage Regulator automatically maintains stable output voltage despite fluctuations in input voltage or load. It is commonly used with power transformers in areas with unstable grids, ensuring consistent voltage for sensitive equipment and improving overall system efficiency. -
What other Transformer Equipments do you offer?
In addition to HV bushings, HV switchgear, prefabricated transformers and voltage regulators, we also supply Buchholz relays, pressure relief valves, dehydrating breathers, magnetic oil level gauges, winding temperature indicators, and complete sets of transformer spare parts.
Welcome your inquiry
Honesty, Integrity, Frugality, Activeness and Passion