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HENTG POWER 300kVA 3.3kV/0.4kV Oil-Immersed Transformer with Coastal Anti-Corrosion Design for South Africa

Product Summary

300kVA 3.3kV/0.4kV oil-immersed transformer for South Africa's industrial & coastal networks. Features marine-grade anti-corrosion coating, IEC 60076 compliance, low losses, and enhanced leak-proof design for mining, utility & renewable applications.

Key Attributes
Brand Name: HENTG POWER
Model Number: S11-300 3.3/0.4
Place of Origin: China
Certification: CE, IEC
Product Custom Attributes
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300kVA Oil-Immersed Transformer

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3.3kV/0.4kV Distribution Transformer

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Coastal Anti-Corrosion Power Transformer

Product Description
HENTG POWER 300kVA 3.3kV/0.4kV Three-Phase Oil-Immersed Transformer ONAN

High-efficiency outdoor distribution transformer engineered for South Africa's industrial, coastal, and utility power networks.

300kVA transformer South Africa 3.3kV transformer 400V distribution transformer oil immersed transformer ONAN transformer Eskom standard transformer

Key Features & Benefits
Designed for South Africa Power Networks
  • Rated voltage 3.3kV/0.4kV suitable for industrial and mining applications
  • Compatible with municipal and private distribution networks
  • IEC 60076 compliant standards
High Efficiency & Low Operating Cost
  • High-grade CRGO silicon steel core construction
  • Optimized magnetic flux density design
  • Low no-load loss and load loss options available
  • Reduced lifecycle energy consumption
Heavy-Duty Outdoor Structure
  • Corrugated tank design (hermetically sealed optional)
  • ONAN cooling (Oil Natural Air Natural)
  • Strong mechanical structure for transport and installation
Coastal Anti-Corrosion Design
  • Sandblasted surface preparation
  • Zinc-rich epoxy primer coating
  • Polyurethane marine-grade top coating
  • Suitable for high humidity & salt spray areas
Enhanced Anti-Leakage System
  • Oil-resistant nitrile rubber gaskets
  • Precision torque-controlled bolt tightening
  • Vacuum oil filling & degassing process
  • 100% factory pressure & leakage testing

Technical Specifications
Rated Power: 300kVA
High Voltage: 3.3kV
Low Voltage: 0.4kV (400V)
Frequency: 50Hz
Cooling Method: ONAN
Phase: Three-Phase
Vector Group: Dyn11 (customizable)
Tap Changer: ±2×2.5% or ±5%
Insulation Class: Class A
Temperature Rise: 60K / 65K
Installation: Outdoor ground mounted
Standard: IEC 60076 / SANS (upon request)
Applications in South Africa
  • Mining sites and operations
  • Industrial factories and plants
  • Commercial developments
  • Solar and renewable energy projects
  • Municipal substations

Coastal Environment Solutions
Common Coastal Challenges (Durban, Cape Town, Port Elizabeth areas):
  • Salt spray corrosion on transformer tank surfaces
  • High humidity accelerating gasket aging
  • Rust formation at welding seams and joints
  • Oil leakage risk due to long-term corrosion exposure
  • Strong UV exposure degradation
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