550kVA Dry-Type Transformer Price and Specifications | ZTelec

Time：2026-03-6    Auther：ZTelec-www.ztelectransformer.com

The 550kVA dry-type transformer is widely used in industrial power distribution systems, commercial buildings, and renewable energy projects due to its high safety, energy efficiency, and low maintenance requirements. As a medium-capacity distribution transformer, it is a popular choice for engineers, project contractors, and procurement managers who require reliable power solutions. This article provides a detailed overview of the 550kVA dry-type transformer price, specifications, and application scenarios to help you better understand its technical advantages and market value.

Key Features of the 550kVA Dry-Type Transformer

The 550kVA dry-type transformer adopts an oil-free insulation structure and commonly uses epoxy resin casting technology or VPI (Vacuum Pressure Impregnation) processes. Compared with traditional oil-immersed transformers, dry-type transformers provide higher safety levels and are especially suitable for indoor installations or areas with strict fire protection requirements.

High Safety Performance

The transformer uses flame-retardant epoxy resin casting insulation, offering excellent fire resistance, self-extinguishing capability, and explosion-proof characteristics. This design greatly improves operational safety in public buildings and industrial environments.

Environmentally Friendly Operation

With no insulating oil used in the structure, the transformer eliminates the risk of oil leakage and environmental contamination. During operation, it produces no harmful emissions, making it compliant with modern environmental protection and ESG requirements.

Strong Short-Circuit Resistance

ZTelec dry-type transformers typically adopt foil windings or segmented cylindrical windings that are integrally cast. This structure provides high mechanical strength and enables the transformer to withstand strong electromagnetic forces caused by short-circuit currents.

Low Loss and High Efficiency

The transformer core uses high-quality cold-rolled grain-oriented silicon steel sheets. Optimized magnetic circuit design reduces both no-load loss and load loss, helping improve overall power system efficiency.

Low Noise Operation

Through advanced magnetic circuit optimization and structural design, the operating noise of the transformer is usually controlled within 50dB–55dB, making it suitable for noise-sensitive environments such as commercial buildings and hospitals.

550kVA Dry-Type Transformer Technical Specifications

Before evaluating the price, it is important to understand the typical technical specifications of a 550kVA dry-type transformer. The following parameters represent common configurations used in many industrial and commercial projects.

Rated Capacity: 550 kVA

Insulation Class: F Class (155°C) or H Class (180°C)

Rated Voltage: Commonly 10kV/0.4kV, with optional 6kV, 20kV, or 35kV customization

Tap Range: ±5% or ±2×2.5%

Connection Group: Dyn11 or Yyn0

Insulation Level: Typically LI75 AC35 or higher depending on voltage level

Cooling Method: AN (Natural Air Cooling) or AF (Forced Air Cooling)

Under natural air cooling conditions (AN), the transformer operates at its rated capacity of 550kVA. When equipped with forced air cooling (AF), the maximum operating capacity can increase to approximately 720kVA.

No-Load and Load Loss: Designed to meet or exceed the requirements of the GB/T 10228-2015 national standard.

Protection Degree: Standard IP20 enclosure, with optional IP40 or higher protection.

Temperature Rise Limit: 100K for F-class insulation.

Typical Applications of 550kVA Dry-Type Transformers

Commercial Complexes

Provides stable power supply for lighting systems, elevators, air-conditioning equipment, and general building power distribution.

Industrial Parks

Supports production lines in industries such as textile manufacturing, machinery processing, and food production.

Data Centers

Supplies reliable power for IT cabinets, UPS systems, and cooling equipment where safety and low maintenance are critical.

Photovoltaic and Energy Storage Projects

Used as a step-up or step-down transformer in solar power plants and energy storage systems.

550kVA Dry-Type Transformer Price Range

The price of a 550kVA dry-type transformer can vary depending on several technical and material factors such as conductor material, insulation class, energy efficiency requirements, and optional configurations.

Market Reference Price

Standard configuration transformers generally range between ¥80,000 and ¥120,000. Higher energy efficiency models, H-class insulation systems, or customized configurations may increase the total price.

Main Factors Affecting Transformer Price

Copper or aluminum winding selection directly influences production cost and electrical performance.

Energy efficiency requirements and loss control levels also affect the transformer design and materials used.

Insulation class, temperature rise limits, and insulation materials determine durability and operating capability.

Protection class upgrades and additional accessories such as temperature controllers or cooling fans can also increase the final price.

Project certification requirements and special testing standards may further influence the manufacturing process and total cost.

Why Choose ZTelec 550kVA Dry-Type Transformers

ZTelec is a professional power equipment manufacturer with extensive experience in the design and production of dry-type transformers. Our products are widely used in industrial facilities, infrastructure projects, and renewable energy systems.

We carefully select high-quality insulation materials and conductive components to ensure long-term operational stability.

Each transformer undergoes strict factory testing and quality control procedures before delivery.

ZTelec supports customization for multiple voltage levels, energy efficiency standards, and special project requirements.

We also provide stable delivery schedules and professional after-sales technical support to ensure reliable equipment operation.

How to Get an Accurate 550kVA Transformer Quote

Since different projects have varying voltage levels, installation environments, and technical standards, the exact price of a 550kVA dry-type transformer should be calculated according to specific project requirements.

If you need detailed technical specifications, professional selection guidance, or the latest quotation, please contact ZTelec. Our engineering team will provide reliable transformer solutions tailored to your project.