Product Introduction

The SC(B)H15 series amorphous alloy resin insulated dry-type distribution transformer is a new generation of energy-saving products launched by our company to create an energy-saving society. This product uses a new generation of core material—amorphous alloy, which is characterized by low unit loss. Under the same magnetic flux density, the unit loss of the amorphous alloy core is only 25% of that of silicon steel sheets, making the energy-saving effect very significant. The amorphous alloy resin insulated dry-type distribution transformer inherits all the advantages of epoxy resin cast dry-type transformers and is a key recommended product for urban power grid transformation.

Product Features

1. Low no-load loss, good energy-saving effect, making it the most economical distribution transformer in terms of operating costs.

2. Flexible installation locations, can be used with prefabricated substations or installed in distribution transformers.

3. Flame retardant, explosion-proof, pollution-free, maintenance-free, can be unattended.

4. High dynamic and thermal stability, good short-circuit resistance and lightning impact resistance.

5. Fully sealed coil structure, moisture-proof, dust-proof, partial discharge below 10PC, safe and reliable operation.

6. The transformer can be equipped with temperature control and temperature display systems as per user requirements, and can be used in conjunction with axial flow fans.

Model Description

Technical Specifications

Voltage Level: 10KV

Capacity Range: 30-2500kVA

Voltage Regulation Method: No-load voltage regulation

Decomposition Range: ±2x2.5% or ±5%

Frequency: 50Hz or 60Hz

Connection Group Mark: Y, yn0, D, yn11

Short Circuit Impedance: Standard Impedance

Maximum Temperature Rise: 100K

Cooling Method: AN or AF

Protection Level: Indoor: IP00, IP20 Outdoor: IP23

Insulation Level: F Level

Insulation Level: 10KV level power frequency withstand voltage 35/3kV impulse withstand voltage 75kV

Technical Performance Parameters

A dry-type transformer is a vital electrical device that transfers power between circuits through electromagnetic induction without using any liquid insulation or cooling medium. Instead, it relies on air or other gas for cooling, making it environmentally friendly, safe, and highly reliable. These transformers are widely used in residential, commercial, and industrial applications, especially where fire safety, maintenance convenience, and eco-friendly operation are essential.

Dry-type transformers are typically designed with epoxy resin or cast resin insulation, which provides excellent mechanical strength and protection against dust, moisture, and chemical contaminants. This structure ensures stable performance even in harsh environments. Unlike oil-immersed transformers, dry-type units eliminate the risk of oil leakage, explosion, or environmental pollution, making them suitable for indoor installations such as office buildings, hospitals, tunnels, data centers, and shopping malls.

One of the major advantages of a dry-type transformer is its outstanding safety performance. Since it does not contain flammable oil, it significantly reduces fire hazards and maintenance costs. The compact and modular design allows easy installation and flexible configuration in limited spaces. It also offers low noise, minimal vibration, and excellent thermal performance, ensuring reliable operation over long service life.

Technological innovations have further enhanced the efficiency of dry-type transformers. Modern designs feature low-loss silicon steel cores, advanced vacuum pressure impregnation (VPI) techniques, and intelligent temperature monitoring systems. These features ensure high energy efficiency, reduced operating temperature, and extended lifespan. Many models can also be equipped with smart sensors that continuously monitor load, temperature, and humidity, improving predictive maintenance and reducing downtime.

The transformers are classified into two main types — cast resin dry-type transformers (CRT) and vacuum pressure impregnated transformers (VPI).

Cast Resin Type: The windings are fully encapsulated with epoxy resin, making them moisture-proof and ideal for humid or polluted environments.

VPI Type: The windings are impregnated with varnish under vacuum and pressure, providing strong insulation and mechanical durability, suitable for industrial and clean indoor environments.

Applications of dry-type transformers include renewable energy systems (such as wind and solar power), manufacturing plants, public buildings, transportation infrastructure, and mining operations. They can also be customized to meet specific voltage, frequency, or environmental requirements. Some advanced models support low-loss designs, energy-saving cores, and eco-friendly materials that align with modern sustainability standards.

Maintenance of dry-type transformers is relatively simple. Since there is no oil, regular oil testing and replacement are unnecessary. Routine maintenance involves visual inspection, cleaning dust from the cooling ducts, checking the insulation resistance, and ensuring proper ventilation. With proper upkeep, a high-quality dry-type transformer can operate efficiently for over 25 years.

In conclusion, the dry-type transformer stands as a modern, safe, and sustainable power solution. It combines high reliability, easy maintenance, and strong environmental adaptability, making it an ideal choice for industries and infrastructures seeking efficient and eco-friendly power transformation.