Zhejiang Jiangshan Hengli Electrical Co., Ltd. is one of the leading manufacturers and suppliers of 3 phase step down and step up distribution transformer in China. If you're going to wholesale durable 3 phase step down and step up distribution transformer made in China, welcome to get pricelist from our factory. All customized products are with high quality and low price.
Hengli (Henly) 's 1250kVA 3 Phase Step Down and Step Up Distribution Transformer is ideal for large-scale electrical distribution systems where efficiency and reliability are essential. It is a step-down transformer 10KV to 0.4KV, the primary voltage is 10KV, the secondary voltage is 0.4KV. It is a medium-capacity power transformer designed to efficiently convert voltage levels in three-phase electrical systems. It can either step down high voltage to lower levels for safe use in residential, commercial, and industrial applications, or step up voltage for transmission purposes. With a rated capacity of 1.25 MVA, it is ideal for handling stable and continuous power loads in power distribution networks, substations, and industrial facilities.
The 3 Phase Step Down and Step Up Distribution Transformer is widely used in industrial facilities and infrastructure projects requiring stable voltage transformation and continuous operation. As a manufacturer with full production capability, we deliver transformers that meet international standards while maintaining competitive pricing.
Technical Parameters
| Rated Power | 1250kVA |
| Primary Voltage | 10kV |
| Secondary Voltage | 0.4kV |
| Model | S11-1250KVA-11/0.4KV |
| Cooling Method | ONAN |
| Frequency | 50Hz / 60Hz |
| Vector Group | Dyn11 |
| Winding Material | Copper |
| Tap Changer | NLTC |
Applications
- Industrial manufacturing
- Data centers
- Infrastructure projects
- Commercial facilities
Structural Design
Magnetic Circuit Design
The core adopts low-loss silicon steel and optimized stacking methods to reduce energy loss and improve performance.
Winding Configuration
The transformer uses multi-layer cylindrical windings with strong insulation, ensuring durability and electrical stability.
Thermal Performance
Efficient oil circulation enhances cooling performance and prevents overheating during operation.
Scope of Supply
3 Phase Step Down and Step Up Distribution Transformer
Power Range: 10 kVA – 5000 kVA
Voltage Levels: Customizable
Phase: Single-phase / Three-phase
Customization Options
We provide fully customized transformer solutions to meet your project requirements:
Custom voltage ratios (HV/LV)
Special core and winding designs
Copper or aluminum windings
K-factor transformers for harmonic loads
Compact or lightweight designs
Special cooling systems
Our engineering team will deliver a tailored design within 72 hours based on your specifications.
Performance Highlights
● High capacity for large loads
● Energy-efficient design
● Strong mechanical strength
● Low noise operation
Factory Capability
We provide:
- Direct manufacturer pricing: Factory-direct (Best price for 100% upfront).Skip the middleman and the long wait.
- MOQ: 1 unit – flexible cooperation
- Large stock available, fast delivery
- Service: No bidding, no delays, direct deal for private projects.
- Quality tested. Ready for your mines & factories in your country.
- Standard production lead time: 15 days
- Focused on Chinese power transformer supply with stable quality and compliance with multiple international standards.
- Power utilities, installers, and EPC contractors are welcome for long-term cooperation.
FAQ
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