A: Our products are certified to UL 5085, UL 1561, and UL 1562. These certifications apply to the transformer as a complete unit, not just to individual components
+86 18513032986
UL Certified Dry-type Transformer
Express Delivery: As fast as 20 days.
Since 1983, DSJ has been manufacturing 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.
Dry Transformer Type: Distribution Transformer, Isolation Transformer, Control Transformer, Autotransformer, etc.
Dry Transformer Insulation : Vacuum Pressure Impregnated (VPI), Cast Resin (Epoxy Resin).
UL, CE, IEC, ISO certified. One-Stop selection for transformers of diverse capacities and voltage levels.
UL Certified
Up to 5,000KVA
NEMA 1 & 3R Enclosure
Copper/Aluminum windings
DSJ provides high-quality dry-type transformers for industrial control, CNC systems, photovoltaic energy, distribution networks, data centers, and other applications.
Each product is custom-built with UL-certified components and tested for performance and safety. Dry-type transformers are available with a maximum capacity of up to 5,000KVA.
All products undergo rigorous performance and safety tests, resulting in a product lifespan that exceeds the industry average.
Rapid Quotation Support
You get price within 24 hours
Short Lead-Time
As fast as 3~5 weeks
Built for Reliability
Fully UL listed, with premium components
We Customize Your Transformer
1KVA-3,000KVA Dry-type Transformer
1KVA-3,000KVA Industrial Control Transformer
1PH:3PH Autotransformer
300KVA-10,000KVA Substation Transformer
General Purpose Low Voltage Dry-type Transformer
30KVA-10,000KVA Padmount Transformer
Why Choose Us
Custom Engineering
Direct access to engineers who have spent decades building, maintaining and troubleshooting transformers. Offer tailored solutions for your unique needs.
Industry Leading Manufacturing & Quality
ISO-certified facilities, precision coil winding, strict quality check all add up to reliability that exceeds UL, IEEE, ANSI and IEC standards.
Fast Lead Time
A lead-time as fast as 20 days ensures your needs are met with the utmost speed.
Gold Standard Service & Support
Deliver quality assurance that far exceeds the industry average. Respond to after-sales issues within 2 hours and propose solutions within 24 hours.
Certificate
Our Factory
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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
Global Projects
USA, Nevada
Solar Power Plant Project
China, Beijing
Daxing International Airport
Malaysia
Solar Substation in PV System
USA, California
Transformer Replacement Project
UAE
Shams Power Plant Project
Canada, Ontario
Office Building Project
USA, Texas
Bitcoin Mining Facility
USA, New York
Law Firm Renovation Project
Australia
GIS Mobile Substation Project
USA, Colorado
Industrial Park Project
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Q: What UL standards does your dry-type transformer comply with?
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Q: What is the average service life of your dry-type transformers?
A: Typically, the service life of our dry-type transformers can exceed 25 years. And the actual lifespan also depends on the operational conditions.
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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.
GET A QUOTE
If you have any further questions, please contact us and we will be happy to answer them.
