Finished Transformer Workshop
Real completed units staged in orderly rows, ready for final project inspection, FAT witnessing, and international dispatch.
Voltage Class — 11 kV
11kV Distribution Transformers
11 kV is the dominant distribution voltage across Sub-Saharan Africa, South and Southeast Asia, and parts of the Middle East. XinHuan manufactures IEC 60076 oil-immersed and dry-type transformers at 11 kV high voltage class, from 50 kVA to 2500 kVA, for utility and industrial projects.
50–2500
kVA range
11 kV
HV class
IEC 60076
standard
24h
quote response
Factory Facility & Verification
Real Completed Transformers & Factory Workshop
Direct visual proof of XinHuan's manufacturing capability in Hefei, China. Unedited photographs showing our finished distribution transformer workshop, marked finished products area, cast resin dry-type stock, and export container loading.
Dry-Type Transformer Bay
F/H-class cast resin coils and harmonic mitigation dry-type distribution transformers in stock.
Finished Products Area
Clear production-stage segregation and routine quality verification for procurement teams prior to container packaging.
Active Assembly Floor
Precision silicon steel core stacking, copper coil winding assembly, and tank fabrication.
Vacuum Autoclave Drying
Heavy-duty vacuum autoclave drying process ensuring zero residual moisture in coil insulation.
Export Preparation & Shipping
Direct container packing and heavy-duty ocean freight loading outside our Hefei facility.
Quality & Compliance
Certified B2B Manufacturing & Laboratory Performance
Every transformer, compact substation, and switchgear unit is engineered under audited ISO quality management systems and type-tested according to IEC 60076 and ANSI C57 international standards.
IAF / CNAS Accredited
ISO 9001:2015 Quality System
Certified Quality Management System covering design, coil winding, vacuum drying, oil filling, and routine testing of 10kV–35kV distribution transformers.
Environmental System
ISO 14001:2015 Environmental
Environmental Management System certifying low-loss eco-designed core assemblies, zero PCB insulation oil, and environmentally safe production controls.
Occupational Health
ISO 45001:2018 Safety System
Occupational Health and Safety Management System ensuring safety containment in high-voltage testing bays and factory assembly protocols.
CNAS Lab Type Tests
IEC 60076 & GB Type Tests
Complete routine and type test records (temperature rise, impulse voltage withstand, short-circuit withstand) conducted at CNAS-accredited national research institutes.
SGS Audited Supplier
SGS Verified Manufacturer Audit
On-site factory audit certificate by SGS / Made-in-China, verifying manufacturing premises, export capacity, assembly lines, and legal qualification.
≥180 Units/Yr Export
International Delivery Certificate
Verified annual supply performance and delivery certificate for overseas power grid EPC and industrial infrastructure projects (Mozambique, Nigeria, Kenya, SEA).
Technical Overview
11kV — The Global Distribution Standard
11 kV (also written 11kV or 11,000 V) is the most widely deployed medium-voltage distribution class outside the Americas. It is standard in Sub-Saharan Africa, the UK, India, Pakistan, Bangladesh, Southeast Asia, and GCC countries. Distribution transformers at this voltage class step down to 0.4 kV (400 V / 230 V) for end-user supply.
XinHuan's 11 kV transformer range is manufactured to IEC 60076 as the primary standard, with GB/T 1094 cross-reference available. The S13 and S22 series oil-immersed designs feature amorphous or grain-oriented silicon steel cores for low no-load losses, hermetically sealed or conservator tank options, and ONAN standard cooling with ONAF upgrade available for high ambient temperature sites.
Standard accessories include: off-circuit tap changer (±2 × 2.5%), oil level gauge, thermometer, pressure relief valve, earthing terminal, and cable boxes. Buchholz relay, winding temperature relay, and on-load tap changer (OLTC) available on request.
Key Specifications
-
Rated Voltage
11 kV high voltage; 0.4 kV low voltage (standard)
-
Capacity Range
50 kVA – 2500 kVA (standard); larger on request
-
Standard
IEC 60076-1 / GB/T 1094
-
Cooling
ONAN standard; ONAF available
-
Vector Group
Dyn11 (standard); others available
-
Frequency
50 Hz standard; 60 Hz on request
-
Core Grade
S13 (silicon steel) / S22 (high-efficiency)
-
Tank
Hermetically sealed or conservator
Product Range
11kV Distribution Transformers — 165 Models Available
Showing a selection from XinHuan's 11kv distribution transformers range. View full catalog →
Oil-Immersed Transformers · Distribution
50 kVA 33kV Three-Phase Oil-Immersed Distribution Transformer
This 50 kVA oil-immersed distribution transformer is designed for reliable power distribution in rural...
Dry-Type Transformers · Special Voltage Dry-Type
IP23 Enclosed Three-Phase Dry-Type Transformer (500kVA)
This ip23 enclosed three-phase dry-type transformer is designed for indoor power distribution where...
Compact Substations · European Type (IEC)
630 kVA 11kV Three-Phase European Type Compact Substation
This 630 kva three-phase european type compact substation is an integrated package solution combining...
Isolation Transformers · Custom & Industrial Oil
2000 kVA 11kV Three-Phase K-Factor Isolation Oil Transformer
This 2000 kva three-phase k-factor isolation oil transformer is configured for a specific operating...
Switchgear & Control · High/Medium Voltage (MV)
11kV Indoor High Voltage Electrical Control Cabinet
This indoor high voltage electrical control cabinet is designed for medium-voltage distribution, feeder...
Oil-Immersed Transformers · ANSI/LatAm Standard
75 kVA 13.2kV Three-Phase Oil-Immersed Distribution Transformer
This 75 kVA oil-immersed distribution transformer is designed for dependable power distribution in...
Dry-Type Transformers · Special Voltage Dry-Type
IP20 Enclosed Three-Phase Dry-Type Transformer (500kVA)
This ip20 enclosed three-phase dry-type transformer is designed for indoor power distribution where...
Compact Substations · European Type (IEC)
500 kVA 11kV Three-Phase European Type Compact Substation
This 500 kva three-phase european type compact substation is an integrated package solution combining...
Isolation Transformers · Custom & Industrial Oil
1000 kVA 11kV Three-Phase K-Factor Isolation Oil Transformer
This 1000 kva three-phase k-factor isolation oil transformer is configured for a specific operating...
Switchgear & Control · High/Medium Voltage (MV)
11kV KYN28 Three-Phase High Voltage Switchgear Panel
This kyn28 three-phase high voltage switchgear panel is designed for medium-voltage distribution, feeder...
Oil-Immersed Transformers · ANSI/LatAm Standard
75 kVA 13.8kV Three-Phase Oil-Immersed Distribution Transformer
This 75 kVA oil-immersed distribution transformer is designed for dependable power distribution in...
Dry-Type Transformers · Special Voltage Dry-Type
500 kVA 11kV/480V Three-Phase Dry Distribution Transformer
This 500 kva /480v three-phase dry distribution transformer is designed for indoor power distribution...
3D Engineering Anatomy Cutaway
High-precision 3D component breakdown illustrating core assembly, copper windings, insulation, conservator tank, and protection accessories.
High-Grade Silicon Core
Electrolytic Copper Coil
Off-Circuit / OLTC Tap Switch
Buchholz & Temp Relays
Factory Quality Inspection & Testing
Watch routine factory testing and quality control inspections inside XinHuan's manufacturing facility.
100% full routine tests (IEC 60076) conducted before export packing.
Engineering Submittal & Layout Workbench
Substation Room Fit & Multi-Equipment CAD Footprints
Select your equipment type and capacity to inspect verified GA engineering CAD line drawings, Single Line Diagrams (SLD), dimensions (L × W × H), roller gauge, and submittal clearances before procurement.
Available Ratings:
11kV / 33kV Dual Voltage
IEC 60076 / IEEE Compliant
100% Routine Factory Tested
Export Nitrogen / Seaworthy Pack
1000 kVA Technical Dimensions
IEC 60076-1International utility & industrial submittal specifications
| Overall Length (L) | 1,750 mm |
|---|---|
| Overall Width (W) | 1,120 mm |
| Overall Height (H) | 1,780 mm |
| Roller Wheel Track Gauge (D) | 820 mm |
| Total Equipment Net Weight | 3,820 kg |
| Min Substation Clearance | 1,000 mm surrounding |
| Rated Voltage / System | 11 kV / 33 kV Dual Primary |
| Applicable Standard | IEC 60076-1 / IEEE C57 |
Download Technical Data Sheet (PDF)
Request Factory Engineering Submittal Package
Full CAD DXF/DWG vector footprints, 3D STEP models, and custom project submittals provided within 2 hours upon request.
Factory & Testing
See XinHuan in Action
Factory tours, transformer testing, and production walkthroughs straight from our Hefei manufacturing base.
Company Tour
Corporate & Factory Tour
Hefei manufacturing base, automated workshops, and high-voltage testing laboratory.
Oil-Immersed
Oil Transformer Routine Testing
100% IEC 60076 voltage ratio, winding resistance, and dielectric routine testing.
Dry-Type
Cast Resin Dry-Type Quality
Epoxy resin vacuum casting, partial discharge testing, and temperature monitoring.
Pad-Mounted Substation
Pad-Mounted Substation
Compact outdoor substation assembly with loop-feed and dead-front safety design.
Production Line
Transformer Production Floor
Automated coil winding, precision core stacking, and vacuum drying chambers.
Switchgear
High-Voltage Switchgear
Vacuum circuit breakers, copper busbar routing, and relay protection cabinets.
Compact Substation
European Compact Substation
Prefabricated kiosk substation panel wiring, RMU integration, and LV distribution.
Dry-Type Assembly
Dry-Type Production Line
Copper foil winding, vacuum resin casting molds, and core-coil assembly.
Production Archives & Virtual Tours:
Watch routine testing procedures, FAT walkthroughs & workshops.
Technical Q&A
Frequently Asked Questions — 11kV Distribution Transformers
XinHuan's 11kV Distribution Transformers units are manufactured strictly to IEC 60076 and GB/T 1094 standards (or ANSI C57.12 upon request). Every unit undergoes full factory routine tests: winding resistance, voltage ratio, phase displacement, short-circuit impedance, load/no-load losses, and separate-source AC withstand voltage.
To receive a firm EXW, FOB, or CIF quote within 24 hours, please provide: rated capacity (kVA), primary/secondary voltage, frequency (50Hz/60Hz), vector group (e.g. Dyn11), cooling method (ONAN/ONAF or AN/AF), and destination port.
Transformers are packed in fumigated export-grade wooden cases with waterproof moisture barriers and internal bracing. We support EXW (Hefei factory), FOB (Shanghai/Ningbo port), and CIF to any global destination port.
Export Markets
Where 11kV Distribution Transformers Are Supplied
11kV Distribution Transformers — Get a Price
Send Your Specification
Include capacity (kVA), primary voltage (11 kV), secondary voltage, standard (IEC/GB), destination country, and quantity. We respond within 24 hours.