SHENGTE dry-type transformers—including three-phase dry-type transformers and cast resin dry-type transformers—feature advanced insulation systems that effectively prevent leakage current and electrical arcing. Unlike traditional oil-filled units, SHENGTE dry power transformers maintain completely dry cores and windings, eliminating the risk of oil leaks and the need for containment structures. Cooling options can be tailored to site requirements, with both natural air cooling (AN) and forced air cooling (AF) available. Cast resin dry-type transformers are particularly well-suited for indoor installations with strict safety standards, such as schools, hospitals, and data centers. With exceptional heat resistance and the ability to withstand high electrical stress, SHENGTE three-phase dry-type transformers require virtually no additional maintenance over their service life.

Features:

• 1. High-Voltage Winding Strength
  The HV windings of SHENGTE three-phase dry-type transformers are vacuum-cast using epoxy resin mixed with fillers, ensuring low partial discharge and exceptional dielectric strength. Both the inner and outer walls are reinforced with fiberglass mesh, significantly enhancing mechanical toughness and enabling the coil to withstand sudden short circuits without deformation or displacement.

• 2. Low-Voltage Foil Winding
  The LV side employs a foil winding structure instead of conventional wire winding, eliminating the spiral angle effect and ensuring a more balanced ampere-turn distribution. Integrated axial cooling ducts improve heat dissipation efficiency, while the layers are bonded with DMD epoxy resin cloth and cured into a solid monolithic structure for enhanced durability.

• 3. Efficient Iron Core
  The core is constructed from cold-rolled grain-oriented silicon steel sheets featuring a three-step full-mitered joint design. Core columns are secured with F-class strapping bands and coated with epoxy resin, effectively reducing no-load loss, no-load current, and core noise. All clamps and fasteners undergo surface treatment, enhancing both corrosion resistance and overall product finish.

• 4. Cross-Flow Cooling Fan System
  Equipped with a cross-flow top-blowing fan system, this dry cast resin transformer operates quietly while delivering strong air pressure. The compact fan design not only contributes to a clean appearance but also significantly boosts the transformer's overload capacity when required.

• 5. Intelligent Temperature Control
  Each transformer is integrated with a smart temperature controller that continuously monitors coil temperature. It automatically activates protective measures to prevent overheating, thereby enhancing operational safety and long-term reliability.

• 6. Protective Casing Options
  SHENGTE three-phase dry-type transformers are available with enclosures rated IP20, IP23, IP30, or IP33. Depending on the installation environment, casing options include aluminum alloy, cold-rolled steel, or stainless steel—providing enhanced protection and flexibility for both indoor and outdoor applications.

Our Advantages:

This three-phase dry-type transformer features extremely low operating losses, minimal noise, and virtually no partial discharge. With forced air cooling, it can safely carry up to 120% load, delivering exceptional energy performance.

2. Excellent Moisture Resistance
Unlike oil-filled units, this cast resin dry-type transformer operates reliably even in 100% humidity conditions. It requires no pre-drying before restarting after shutdown—making it ideally suited for coastal or tropical regions.

3. Enhanced Safety
As a dry-type transformer, it is inherently fire-resistant and eliminates the risk of oil leaks. This makes it the preferred choice for indoor installations such as schools, hospitals, and office buildings. No fire hazards, no environmental pollution —a significant advantage for modern urban projects.

4. Intelligent Temperature Control
Equipped with a smart monitoring system, this transformer continuously tracks coil temperature. In the event of overheating, it responds quickly to prevent damage and ensure long-term reliability.

5. Easy Installation, Minimal Maintenance
As a dry-type distribution transformer, installation is simple and routine maintenance is virtually eliminated. No oil level checks, no leak concerns, no messy cleanups—this translates to days saved on-site and reduced operating costs over the transformer's lifetime.

6. Proven Reliability
Manufactured to meet stringent international standards, this resin-cast transformer has demonstrated exceptional durability through field testing and real-world applications.

Product Parameters

Production Process

Company Profile

Guangdong Shengte Electric Co., Ltd. , headquartered in Foshan, China, is a trusted partner in the power industry, delivering reliable transformers and exceptional after-sales support for over a decade. We serve a diverse global clientele, including government bodies and private enterprises, providing high-quality, cost-effective energy solutions that have earned us a reputation for excellence.

Our commitment to the highest standards is validated by our compliance with the stringent requirements of German Power Utility clients. This ensures our solutions represent the pinnacle of quality and engineering.

Based in a state-of-the-art 10,000-square-meter facility in Foshan, we utilize advanced production and testing equipment to offer fully customizable solutions, including OEM and ODM services. Our comprehensive portfolio includes oil-immersed transformers, cast resin dry-type transformers, prefabricated substations, and related equipment.

With global accreditations including UL, IEC (ILAC-MRA, CNAS), ISO 9001, and CE, Shengte provides end-to-end solutions you can trust for safety, quality, and international compliance.

Certifications

Project Cases

Exhibition

Packaging & Shipping

FAQ About SHENGTE 3 Phase Dry Type Transformer

Q1: What’s special about this 3-phase dry-type transformer compared to an oil unit?

A1: No oil, no leaks, no mess. A cast resin dry-type transformer uses solid insulation instead of oil, so it’s safer in places like hospitals or underground buildings.

Q2: How reliable is this 3-phase dry power transformer in tough environments?

A2: Pretty solid. These dry cast resin transformers keep running even in 100% humidity. In coastal projects we’ve done, units stayed in service for years without issues, except for the usual dust wipe-down. They don’t need “drying out” after shutdown, which is a relief for maintenance teams.

Q3: Do you offer custom designs or just standard models?

A3: Both. Our factory has produced thousands of dry-type distribution transformers, and we often tweak specs — voltage, connection group, casing — to match project needs.

Q4: How about certifications and test reports?

A4: Yes, every unit comes with full test data. We’ve got ISO9001 and CE, and can provide reports according to IEC standards. It’s part of why buyers trust our dry power transformers for public projects where paperwork is as important as performance.

Q5: What’s the usual delivery time and MOQ?

A5: Delivery is normally 20–30 days, though smaller jobs can be quicker. And MOQ? Just 1 set.

Q6: Do you provide after-sales service?

A6: Definitely. Warranty is 12 months, but honestly, issues are rare. If there’s ever a problem with our dry cast resin transformers or other products, our team works with local partners or sends engineers to the site.