Zhejiang Jiangshan Hengli Electrical Co., Ltd. is one of the leading manufacturers and suppliers of cast resin distribution transformer in China. If you're going to wholesale durable cast resin distribution transformer made in China, welcome to get pricelist from our factory. All customized products are with high quality and low price.
This is a cast resin distribution transformer complying with GB 20052-2024 latest national standard. The rated power of this transformer is 630kVA with a connection type of Dyn11. The primary voltage is 10kV with ±2*2.5% tapping range (NLTC), the secondary voltage is 0.4kV. It adopts ultra-low loss high-permeability silicon steel core and optimized foil winding structure, featuring ultra-low no-load & load loss, fireproof, explosion-proof, moisture-proof, low noise and maintenance-free.
Widely adopted for green buildings, data centers, new energy power stations, high-end commercial complexes, hospitals, subway and industrial projects in Southeast Asia and global markets.
Key Parameter Data
|
Specification |
Typical Range |
|
Rated Power |
50kVA – 3,150 kVA |
|
Primary Voltage |
6 kV, 10 kV, 11 kV, 20 kV, 35 kV |
|
Secondary Voltage |
0.4 kV, 0.69 kV (custom on request) |
|
Frequency |
50 Hz / 60 Hz |
|
Phase |
Three Phase |
|
Vector Group |
Dyn11 (standard), Yyn0, YNd11 |
|
Impedance Voltage |
4% – 8% |
|
Tapping |
Off-circuit ±2×2.5% or ±5% |
|
Cooling |
AN (Natural Air) / AF (Forced Air) |
|
Insulation Class |
F (155°C) or H (180°C) |
|
Temperature Rise |
100 K (F) / 125 K (H) |
|
Enclosure |
IP20, IP31, IP54 |
|
Standards |
IEC 60076-11, GB, IEEE |
Need something outside this table? Send your specification - we will engineer around it.
Normal Operating Environmental Conditions
- Ambient temperature: -5℃ ~ +40℃
- Max monthly average temperature: ≤30℃
- Relative humidity: ≤90% (25℃, no condensation)
- Installation altitude: ≤1000m; derate operation when altitude over 1000m
- Installation environment: Indoor, no corrosive gas, severe vibration, heavy dust; anti-mold treatment for tropical coastal areas
Key Advantages
- Oil-free and environmentally friendly design
- Excellent electrical insulation and thermal stability
- High resistance to moisture, dust, and contamination
- Air Natural (AN) or Air Forced (AF) cooling
- Low maintenance requirements
- Compact installation footprint
- Reduced fire and leakage risks
- Suitable for indoor and space-limited installations
- Designed service life of up to 20–30 years under normal operating conditions
- Suitable for industrial, commercial, infrastructure, and critical power applications
Applications
The Cast Resin Distribution Transformer can be used in a wide range of power distribution applications.
Industrial Facilities
Suitable for factories, manufacturing plants, processing facilities, and other industrial power systems requiring reliable medium- or high-voltage power distribution.
Commercial Buildings
The oil-free design makes dry type transformers suitable for office buildings, shopping centers, hotels, and other commercial facilities where fire safety and indoor installation are important.
Data Centers
Reliable power distribution is critical for data centers. The dry type transformer provides an oil-free solution with low maintenance requirements and flexible installation options.
Subway & Railway Systems
Compact, fire-safe transformer solutions are well suited to subway stations, railway infrastructure, and other transportation facilities with strict safety and space requirements.
Renewable Energy Systems
Dry type transformers can also be integrated into renewable energy and power conversion systems where reliable electrical isolation and low maintenance are required.
Infrastructure Projects
The transformer can be used in airports, hospitals, public facilities, utility projects, and other critical infrastructure requiring dependable power distribution.
Why Choose a Chinese Transformer Manufacturer as Your Partner?
As a global core production base for transformers, China brings you multiple notable strengths:
- Mature supply chains for raw materials and components
- Cost-effective pricing versus suppliers from other markets
- Sophisticated production technologies and reliable product quality
Hengli Electrical, based in Jiangshan, Zhejiang, integrates the strengths of China's manufacturing with decades of experience in power transformer industry. We deliver tailored transformer solutions that meet diverse market requirements across the globe.
How to Get a Transformer Quotation
Please provide the following parameters so we can prepare an accurate quotation for you. You may attach your SLD or specification sheet if available.
Quantity, Destination & Application scenario
Power Rating (Rated Capacity)
You can provide either load capacity in KW or the voltage transformer power in KVA.
01
Input & Output Voltage
Input voltage is the mains supply voltage, and output voltage is the voltage that load needs.
Frequency: 50Hz or 60Hz
Phases: Three or single
02
Insulation Class
Both F and H insulation class are available for choice, the default insulation level is F.
03
Vector Group
Please specify Dyn11 or Yyn0 vector group, Delta or Wye (star) connection.
04
Winding Material
Both Aluminum and Copper are available for choice.
05
We're a professional distribution transformer manufacturer and supplier in China, specialized in providing high quality customized products with competitive price. We warmly welcome you to wholesale transformers made in China here from our factory.
FAQ
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