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30+ Years Expertise | Full Compliance with US ANSI/IEEE & DOE Efficiency Standards
China ZBB Group Shanghai Transformer
ZBB GROUP has been designing and manufacturing power transformers, dry-type transformers, switchgear, and unit substations since 1985.
Our 36,000 m² facility is equipped with 300+ production and testing systems, with an annual capacity of 13.78M kVA and 30+ years of manufacturing experience.
We are a transformer manufacturer with in-house engineering, a full testing lab, and built to ANSI/IEEE, DOE efficiency, and UL/CSA standards.
View ProductsReasons to partner with ZBB for U.S. and global transformer projects.
ANSI/IEEE C57.12 series, DOE efficiency, and UL/CSA support available for project requirements.
Strategic material reserve and priority review for critical transformer replacement projects.
-40 C to +55 C operation, corrosion resistance testing, and long-term project experience.
Temperature rise, hi-pot, no-load and load loss, short-circuit impedance, and complete test reports.
Warranty terms are confirmed clearly according to product type, project scope, and commercial agreement.
Technical staff prioritize inquiry review, specification confirmation, and quotation support.
Product capacity and voltage ranges prepared for transformer project selection.
| Product | Capacity | Voltage |
|---|---|---|
| Pad-Mounted Transformers | 75 - 5,000 kVA | 34.5kV class |
| Dry-Type Transformers | 30 - 5,000 kVA | 35kV class |
| Substation Transformers | 5,000 - 20,000 kVA | 69kV class |
| Unit Substation Transformers | 112.5 - 5,000 kVA | 15kV class |
| Overhead Distribution Transformers | 25 - 500 kVA | 34.5kV class |
| Step-Up / Step-Down Transformers | Custom | Custom |
Standards and compliance references commonly required by international transformer buyers.
| Standard | Status |
|---|---|
| ANSI / IEEE C57.12 Series | Compliant |
| DOE 10 CFR Part 431 | Compliant |
| UL / CSA | Available upon request |
| NFPA 70 | Applicable |
| ISO 9001 / 14001 / 45001 | Certified |
| Third-party lab testing (BV / DNV / ABS) | Available |
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Casting
Curing
Winding
Curing Furnace
Winding Machine
Casting Equipment
Foil Winding Machine
Vacuum Oil-filter
Inspecting
Testing Center
ZBB Transformer Production workshop
ZBB Transformers Production workshop
