SHENGTE three-phase oil-immersed transformers utilize oil as both the primary insulating medium and cooling agent. The fully sealed tank design isolates the oil from air, ensuring safer operation, enhanced reliability, and minimal daily maintenance. Featuring a laminated iron core—a hallmark of high-quality distribution transformers—SHENGTE's NLTC models are engineered to significantly reduce no-load loss and current. This design translates to tangible benefits in the field: whether deployed in residential complexes or industrial facilities, our three-phase transformers minimize energy waste while delivering stable, consistent performance. In short, SHENGTE three-phase distribution transformers are built for exceptional durability, efficiency, and a long operational lifespan.

Features:

1. Short-Circuit Resistance: Employs low axial short-circuit force windings to enhance dynamic stability during grid faults, ensuring the transformer remains structurally intact and deformation-free under extreme electrical stress.

2. Structural Reliability: Features a robust internal bracing structure that securely locks the windings in place, suppressing vibration and displacement to ensure a decades-long operational lifespan.

3. Low Flux Density Design: Utilizes an optimized core cross-section and high-grade materials to operate at a low magnetic flux density, minimizing no-load losses and excitation harmonics for improved grid power quality.

4. Anti-Corrosion Fasteners: All hardware, including bolts and nuts, is made of grade 304 stainless steel, guaranteeing exceptional weather resistance and facilitating easy maintenance during outdoor operation.

5. Sealing Durability: Integrates high-quality, aging-resistant nitrile rubber sealing rings that create a hermetically sealed environment, slowing oil oxidation and significantly extending the transformer's service life.

Our Advantages:

• 1. Heat Dissipation Performance：The spiral windings with longitudinal oil ducts ensure efficient heat dissipation, allowing the transformer to operate at peak load even in high ambient temperatures. The robust mechanical structure resists deformation and sagging under thermal and electromagnetic stress.

• 2. Energy Efficiency ：The core is constructed from high-grade, non-oriented silicon steel sheets (≤0.35mm), which enhances magnetic permeability and significantly reduces no-load loss and no-load current.

• 3. Insulation Reliability：High thermal class insulation materials provide superior protection against overvoltage and overload conditions, ensuring long-term operational stability and minimizing the risk of outages.

• 4. Structural Durability：The tank is fabricated from cold-rolled steel and undergoes a rigorous pretreatment process—including degreasing, rust removal, and phosphating—before being coated with a protective three-proof paint. This ensures exceptional resistance to outdoor elements such as UV radiation, moisture, and pollutants.

• 5. Sealing Reliability：Equipped with high-quality nitrile rubber (NBR) sealing rings, the transformer creates a hermetic seal that effectively prevents the ingress of air and moisture, thereby slowing oil oxidation and delaying insulation aging.

• 6. Safety：The fully sealed design isolates the internal insulating oil from the external atmosphere, minimizing fire risk and ensuring safe, reliable operation—providing essential peace of mind for densely populated areas.

• 7. Long Service Life：The synergy of high-grade insulating oil, robust sealing technology, and a rugged mechanical structure guarantees a decades-long operational lifespan, even under severe temperature fluctuations and variable load conditions.

• 8. Easy Maintenance：The fully sealed and robust construction minimizes internal component exposure to contaminants, drastically reducing the need for routine inspections and maintenance, thereby lowering operational costs.

Product Parameters

Production Process

Company Profile

Guangdong Shengte Electric Co., Ltd. , headquartered in Foshan, China, is a trusted transformer manufacturer recognized for engineering excellence and outstanding customer support. With over a decade of industry experience, we have successfully delivered high-performance, cost-effective power solutions to both public infrastructure and private enterprises across the globe.

Our dedication to superior quality is validated by our long-standing partnerships with German Power Utility clients, whose rigorous standards we consistently meet and exceed.

Strategically located in Foshan, our 10,000-square-meter facility integrates advanced manufacturing and precision testing systems. This enables us to provide fully customized solutions, including OEM and ODM services. Our extensive portfolio encompasses oil-immersed transformers, cast resin dry-type transformers, compact prefabricated substations, and related power distribution equipment.

Certified to international benchmarks — including IEC (ILAC-MRA, CNAS), ISO 9001, UL and CE — every Shengte product delivers verified safety, compliance, and performance, anywhere in the world.

Certifications

Project Cases

Exhibition

Packaging & Shipping

FAQ About SHENGTE Three Phase Oil Immersed Transformer

Q1: What type of transformer is this?

A1: It’s a three-phase oil-immersed transformer. The oil provides both cooling and insulation, and the sealed tank keeps air out — a small thing, but it makes field life way easier.

Q2: Where can this 3-phase electric transformer be used?

A2: This 3-phase electric transformer is designed for a wide range of settings — city streets, industrial facilities, and rural power grids. It’s particularly handy where the power demand can swing a bit during the day.

Q3: How efficient and durable is this three phase distribution transformer?

A3: The laminated silicon steel core (<0.35mm thick) reduces no-load loss, while the spiral coil and oil ducts improve heat dissipation. Combined with stainless steel fasteners and a sturdy support structure, this NLTC distribution transformer runs efficiently and lasts for decades.

Q4: What about safety and maintenance?

A4: SHENGTE three-phase oil-immersed transformer is equipped with fully sealed oil, keeping air and moisture out, reducing insulation risks. High-quality sealing rings and corrosion-resistant bolts make routine checks simpler.

Q5: Are certifications, warranty, and OEM options available?

A5: Yes. We hold ISO9001 and CE certifications, provide IEC-standard test reports, and offer OEM/ODM services. Warranty is 12 months, and we can customize logos or markings if needed.

Q6: What are the payment, MOQ, and delivery details?

A6: MOQ is 1 set. Payment options include T/T, Western Union, PayPal, usually 30% advance and 70% before shipment. Delivery generally takes 20–30 days, depending on quantity. Packaging is a wooden case, or customized if requested — which comes in handy for coastal or humid shipments.