S11 500kVA - 800kVA Oil Immersed Transformer with 100% High-Grade Copper for Outdoor Industrial Use

HENTG Power’s S11 series oil-immersed transformers are engineered for demanding industrial environments. Utilizing 100% high-grade copper windings and advanced hermetically sealed technology, our transformers ensure low energy loss, minimal noise, and an extended operational lifespan. As a specialist in custom transformer solutions, we provide reliable power distribution for global infrastructure projects.

• High Efficiency: The S11 design significantly reduces no-load and load losses compared to standard models, optimizing your ROI.

• 100% Pure Copper: We use premium electrolytic copper for superior conductivity and short-circuit resistance.

• Maintenance-Free: The fully sealed structure prevents oil aging and moisture ingress, ensuring stable operation for up to 20 years.

• Engineering Expertise: Whether it's high altitude, extreme temperatures, or corrosive environments, we tailor the design to your specific site conditions.

• Manufacturing Plants & Industrial Parks

• Residential & Commercial Power Distribution

• Renewable Energy Integration (Solar & Wind)

• Mining and Infrastructure Development

• The Main Point: In high-dust environments like Africa, fine sand particles can erode traditional gaskets, leading to oil leakage and internal contamination, which eventually causes transformer failure and costly downtime.

• Our Solution - "Triple-Seal" Anti-Leakage Design:

  • Advanced Sealing Material: We use premium acrylate rubber gaskets that offer superior resistance to aging, high temperatures, and chemical erosion compared to standard cork-based seals.

  • Precision Grooved Flanges: Our tanks feature precision-machined "limit-groove" flanges. This prevents the over-compression of gaskets and ensures a perfect, airtight seal that blocks out all sand and dust.

  • Anti-Corrosive Coating: The exterior undergoes a rigorous multi-stage treatment (sandblasting + zinc-rich primer + UV-resistant topcoat) to prevent rust and withstand abrasive sandstorms.

  • Vacuum Integrity Test: Every unit undergoes a 24-hour pressure and vacuum leak test before shipment to ensure zero-leakage performance in the field.

• Professional 30+ senior engineers offer 24 hours online service and response within 30 min.

• 100,000m² factory, 250+ workers, 30+ senior engineers and 8 production lines, 20000+ sets annual production capacity.

• 100% OQC testing with 8 main detection contents. 15+ years power transformer designing and manufacturing experience.

• Comply with GB 20052-2024/ANSI/IEEE/DOE2016/CSA/IEC60076 standard

• Cross-industry power transformer solution.

• Global on-site technical support.

Q1: Who are we ?

A1: HENTG POWER is a professional designer, manufacturer and installer of power system solution around the World, was founded in 2011, occupies 100,000 square meter. specializing in reliable, high-performance solutions for global power systems

Q2: How can we guarantee quality ?

A2: Always a pre-production sample before mass production; Always final Inspection before shipment, We will provide QC & test reports. We accept FAT(Factory Acceptance Test). Factory can manufacture oil type and dry type distribution transformer, max 500KV 480MVA power transformer, GIS, switchgear, substation, based on ANSI/IEEE/DOE2016/CSA/IEC60076 standard. We will provide you with the guarantee service of over 2 years.

Q3: What is the production lead time?

A3: Normally 15 - 25 days depending on configuration and quantity.

Q4: Can you supply OEM or private label?

A4: Yes. We support OEM and customized branding for distributors and EPC contractors.

Q5: Do you provide technical support?

A5: Yes. Our engineering team provides technical selection guidance, installation advice, and after-sales service.
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