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Hunan Hentg Power Electric Technology Co., Ltd.

  • China,Changsha ,Hunan
  • Verified Supplier
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China HENTG POWER 300kVA 3.3kV/0.4kV Oil-Immersed Transformer with Coastal Anti
China HENTG POWER 300kVA 3.3kV/0.4kV Oil-Immersed Transformer with Coastal Anti

  1. China HENTG POWER 300kVA 3.3kV/0.4kV Oil-Immersed Transformer with Coastal Anti

HENTG POWER 300kVA 3.3kV/0.4kV Oil-Immersed Transformer with Coastal Anti

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Brand Name HENTG POWER
Model Number S11-300 3.3/0.4
Certification CE, IEC
Place of Origin China

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  1. Product Details
  2. Company Details

Product Specification

Brand Name HENTG POWER Model Number S11-300 3.3/0.4
Certification CE, IEC Place of Origin China
High Light 300kVA Oil-Immersed Transformer3.3kV/0.4kV Distribution TransformerCoastal Anti-Corrosion Power Transformer
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

Company Details

Bronze Gleitlager

,

Bronze Sleeve Bushings

 and 

Graphite Plugged Bushings

 from Quality China Factory
  • Business Type:

    Manufacturer

  • Year Established:

    2011

  • Total Annual:

    300-500MVA

  • Employee Number:

    150~200

  • Ecer Certification:

    Verified Supplier

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Get in touch with us

  • Reach Us
  • Hunan Hentg Power Electric Technology Co., Ltd.
  • Room905, D6 building, CCSP Industrial Park, Yuelu District, Changsha,Hunan province, China
  • https://www.hentgpower.com/

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