A: Typically, the service life of our transformers can exceed 25 years. And the actual lifespan also depends on the operational conditions.
+86 18513032986
Reliable Transformer Manufacturer
Express Delivery: As fast as 20 days.
Since 1983, DSJ has been manufacturing medium and low transformers for diverse industries worldwide. For more than 40 years, we are trusted by more than 1,000+ global customers, with many American local projects experience.
Transformer Type: Dry-Type Transformer, Oil-immersed Transformer, Distribution Transformer, Power Transformer, Transformer Substation, and more.
UL, CE, IEC, ISO certified. Compliant with international standards and industry certifications.
One-Stop selection for transformers of diverse capacities and voltage levels.
Your partner for one-stop transformer solutions.
We Customize Your Transformer
Dry Transformer(1 kVA ~ 5,000 kVA):
Primary Voltage: 6KV, 11KV, 20KV, 35KV, etc
Secondary Voltage: 240v, 380v, 400v, 415v, etc
Oil Type Transformer Standard(100 kVA ~ 3150 kVA)
Primary Voltage: Typically Medium Voltage at 6kV, 10kV, or 35kV.
Secondary Voltage: Usually Low Voltage at 400V.
Oil Type Transformer Larger(2 MVA ~ 40 MVA)
Primary Voltage: Up to 110KV, depending on the application.
Secondary Voltage: Often Medium Voltage at 10kV or 35kV, depending on the application.
Frequency: 50Hz/60Hz
Phases: Single-Phase, Three-Phase
Winding: Copper or Aluminum
Options: Tap Changers, Bushings, etc
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2000KVA 3 Phase Transformer Step Up Oil Transformer CE/UL Certified
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40MVA 3 Phase Transformer Oil Type Step Down Transformer CE/UL Certified
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Dry Transformer Electrical Transformer Power Transformer CE/UL Certified
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Outdoor Pre-Assembled Substation Gas Insulated Substation
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Pad Mounted Oil-immersed Transformer UL Certified for Industrial Use
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10KVA-1250KVA Oil-Immersed Transformer UL Certified Custom Industrial Power Solution
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1KVA-3,000KVA Industrial Control Transformer
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Single Phase/Three Phase Autotransformer
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General Purpose Low Voltage Dry-type Transformer
CE/UL Switchgear & Switchboard
Besides transformer, we also manufacture low and medium voltage switchgear. As a leading switchgear manufacturer, we prioritize innovation and reliability in every product. Whether you need switchgear panels for industrial automation or durable solutions for grid systems, our range combines advanced materials, intelligent monitoring, and adaptive designs to meet diverse project requirements.
Reliable, Certified, and Customizable
Reliable Performance: Ensures uninterrupted power distribution and protection for critical systems.
Fully Certified: IEC/CE/UL certified with ABB/Schneider components.
Custom-Built Solutions: Tailored designs to fit specific project requirements.
Enhanced Safety Features: Built with advanced protection mechanisms for operational safety.
Our monthly production capacity is over 8,000 pcs, we can meet the needs of different customers with different purchase quantity.
Your end-to-end electrical partner.
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GCS Low Voltage Switchgear/Switchboard
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MD-E Low Voltage Switchgear
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UL Certified Switchgear/Switchboard
DSJ Story
about DSJ
Building Power, Building Trust
Founded in 1983, DSJ is a leading company in the power distribution industry. We integrate manufacturing with trade and maintain full in-house capabilities in R&D, production, and sales. This enables efficient fulfillment of custom orders with industry-leading speed.
As a producer of distribution system, transformer and photovoltaic products exceeding international standards, We leverages expert teams to provide one-stop service: pre-sales consultation & customization, flexible logistics/payment options, and reliable maintenance – ensuring seamless producer-maintainer-customer collaboration.
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1983
DSJ was founded
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25,000
Square meters of facility
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350+
employees
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8,000+
sets of monthly production capacity
Services
DSJ provides specialized integrated solutions for customers to ensure it meets the customer’s requirement.
Engineered Transformer Solutions for a Global Market.
Stable, Certified, and Fast delivery
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Dry-Type & Oil-Immersed Options
Flexible solutions for commercial, industrial, and utility applications.
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Safe & Stable Operation
Designed for high efficiency, minimal energy loss, and enhanced safety compliance.
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CE/UL Certified
Meets stringent safety and performance standards
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Quick Delivery & Short Lead Times
Accelerated production and shipping to keep projects on schedule
Certificate
Our Factory
Global Projects
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USA, Las Vegas, Solar Power Plant Project
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China, Beijing Daxing International Airport
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Malaysia, solar substation in PV system
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Venezuela, Caracas, EI Valle Substation
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Brazil, Ceará Wind-Solar Hybrid Complex
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UAE, Shams Power Plant Project
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Zimbabwe, 132KV transmission and distribution system
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Canada, Ontario Office Building
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Saudi Arabia, Yanbu, Royal Commission Office Building
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America, Colorado, Industrial Park
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Q: What is the average service life of your transformers?
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Q: Do you provide after-sales support or warranty?
A: All products come with a warranty, backed by comprehensive after-sales support covering technical assistance, installation supervision, and maintenance services to guarantee optimal equipment performance.
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Q: Do you offer OEM services?
A: Yes, we provide OEM services. We can customize everything for you, from technical specifications to the appearance of the enclosure.
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Q: If we want to visit your factory, can you arrange accommodation and transport?
A: Absolutely! We offer comprehensive visit support: hotel bookings near our factory and complimentary airport or train station transfers – all designed to ensure a comfortable and productive experience.
GET A QUOTE
If you have any further questions, please contact us and we will be happy to answer them.
