Precise Voltage Regulation 11KV to 0.4KV Auto Transformer 250KVA for Industrial Equipment Pressure Regulation Direct Supply
150KVA auto transformer for precise 11KV to 0.4KV voltage regulation. Features high efficiency (≥98%), copper windings, CE certification, and custom options. Ideal for industrial equipment protection in harsh environments.
The Auto Transformer is a highly efficient and energy-saving power solution designed with a single winding structure for voltage conversion applications. It is widely used in industrial voltage regulation, manufacturing plants, mining operations, petrochemical industries, construction projects, data centers, and renewable energy systems.
HENGTONG POWER auto transformers are manufactured using high-permeability silicon steel cores, high-purity copper conductors, and high-temperature resistant insulation systems, ensuring low loss, stable performance, compact structure, and reduced maintenance costs.
This 11KV to 0.4KV 250KVA auto transformer is specifically designed for industrial voltage stabilization and continuous power supply applications, helping reduce voltage fluctuation impacts and improve equipment operational safety and lifespan.
Built with premium cold-rolled grain-oriented silicon steel and copper windings for minimized no-load and load losses.
Ensures stable output voltage and protects industrial equipment from power fluctuations.
Designed for Middle East, Africa, and tropical climates with enhanced cooling performance.
Equipped with flame-retardant insulation materials and advanced protection systems for industrial safety.
Supports customized voltage, capacity, frequency, cooling method, enclosure protection, and connection configurations.
Suitable for industrial plants, mining operations, utility systems, renewable energy projects, and infrastructure applications.
| Item | Specification |
|---|---|
| Product Name | Auto Transformer |
| Model | HTP-AT-150KVA |
| Rated Capacity | 250KVA |
| Input Voltage | 11KV |
| Output Voltage | 0.4KV |
| Frequency | 50Hz / 60Hz |
| Phase | Three Phase |
| Winding Material | Copper / Aluminum Optional |
| Cooling Method | ONAN / Air Cooling Optional |
| Insulation Class | Class F / H |
| Temperature Rise | ≤65K |
| Protection Level | IP23 / IP44 / IP54 Optional |
| Insulation Medium | Dry Type / Oil Immersed Optional |
| Vector Group | Dyn11 / Yyn0 / Customized |
| Impedance Voltage | Customized |
| Altitude Capability | Up to 4000m |
| Ambient Temperature | -25℃ to +55℃ |
| Efficiency | ≥98% |
| Short Circuit Strength | Reinforced Mechanical Structure |
| Temperature Monitoring | PT100 Monitoring System |
| Lightning Protection | Surge & Lightning Protection Available |
| Standards | IEC / CE |
| Applications | Industrial Plants, EPC Projects, Mining, Renewable Energy, Utilities |
High ambient temperatures accelerate insulation aging and reduce transformer lifespan.
- Class H high-temperature insulation system
- Enhanced cooling duct structure
- Large-capacity radiator design
- Intelligent temperature monitoring
- High-temperature load optimization
Unstable grid conditions can cause shutdowns and equipment failure.
- Precision voltage regulation
- Low impedance winding structure
- Fast dynamic response capability
- Stable output protection system
Oil & gas, mining, and heavy industries require higher operational safety standards.
- Flame-retardant insulation materials
- Explosion-proof enclosure options
- Multi-layer short-circuit protection
- Overload alarm systems
- Anti-self-ignition safety design
Engineering projects often demand flexible specifications and reliable lead times.
- Fast engineering response
- Customized drawing support
- Flexible specification manufacturing
- Rich export project experience
- Global logistics & after-sales support
A: Yes. Our transformers are specially optimized for hot climate regions such as the Middle East, Africa, and Southeast Asia.
A: Yes. We support explosion-proof, anti-corrosion, and moisture-resistant customized solutions.
A: Absolutely. We provide full customization for voltage, capacity, frequency, vector group, and enclosure protection requirements.
A: Our products can be manufactured according to IEC, ANSI, CE, ISO, and other international standards.
A: Standard models usually require 15–25 days, while customized projects depend on technical requirements.
A: Yes. We offer remote technical guidance, installation support, and project coordination services.
HENGTONG POWER Official Website
HENGTONG POWER is a professional transformer manufacturer specializing in customized transformer solutions for global industrial applications. We provide reliable power distribution equipment for EPC contractors, utility companies, manufacturing plants, mining projects, renewable energy systems, and infrastructure developments worldwide.
With advanced manufacturing technology, strict quality management, and experienced engineering teams, we deliver:
- High efficiency transformers
- Stable voltage regulation systems
- High-temperature resistant designs
- Explosion-proof transformer solutions
- Long service life performance
- Flexible OEM & ODM customization
Our products are exported to global markets including the Middle East, Africa, Southeast Asia, South America, and Europe, helping customers improve electrical system reliability and reduce operational risks.
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