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{"title":"HENTG Power Oil immersed Electrical Transformer 30 Kva-630 KVA Dyn11 \/ Yyn0","imgUrl":"https:\/\/img.chinax.com\/nimg\/1d\/32\/896dff95efc00b4534b2303f2005-200x200-1\/hentg_power_oil_immersed_electrical_transformer_30_kva_630_kva_dyn11_2f_yyn0_vector.jpg","attrs":{"Place of Origin":"China","Brand Name":"HENTG Power","Model Number":"S22","Price":"CN\u00a5929-4346\/sets"}}
{"title":"Mv Hv Oil Immersed Transformer 315kVA To 630kVA 3 Phase Distribution Transformer","imgUrl":"https:\/\/img.chinax.com\/nimg\/bf\/57\/030a1c2bd8431a5b048092f17783-200x200-1\/mv_hv_oil_immersed_transformer_315kva_to_630kva_3_phase_distribution_transformer_60hz.jpg","attrs":{"Place of Origin":"China","Brand Name":"HENTG Power","Model Number":"S13","Minimum Order Quantity":"1"}}
{"title":"Oil Immersed Type Power Distribution Transformer Outdoor 250KVA 315KVA Three","imgUrl":"https:\/\/img.chinax.com\/nimg\/c1\/f2\/2d59222c98799c53c2bb3fb5a9d1-200x200-1\/oil_immersed_type_power_distribution_transformer_outdoor_250kva_315kva_three_phase.jpg","attrs":{"Place of Origin":"China","Brand Name":"HENTG Power","Model Number":"S13","Price":""}}
{"title":"60Hz Frequency Oil Filled Step Up Step Down Power Transformer 160KVA 200KVA","imgUrl":"https:\/\/img.chinax.com\/nimg\/8f\/a0\/14e98463d382e491a90eeb8f5462-200x200-1\/60hz_frequency_oil_filled_step_up_step_down_power_transformer_160kva_200kva_250kva.jpg","attrs":{"Place of Origin":"China","Brand Name":"HENTG Power","Model Number":"S13","Certification":"CE"}}
{"title":"Step Up \/ Down Oil Immersed Power Transformer 30KVA 200KVA Three Phase IEC ANSI","imgUrl":"https:\/\/img.chinax.com\/nimg\/b9\/9c\/157d971e0ffe4e35db0b7446814e-200x200-1\/step_up_2f_down_oil_immersed_power_transformer_30kva_200kva_three_phase_iec_ansi_standards.jpg","attrs":{"Place of Origin":"China","Brand Name":"HENTG Power","Model Number":"S22","Price":""}}
{"title":"3 Phase Oil Immersed Transformer Step Up Step Down 1250Kva With Layered Dual","imgUrl":"https:\/\/img.chinax.com\/nimg\/f8\/97\/5c926212d96bd737c0571d774971-200x200-1\/3_phase_oil_immersed_transformer_step_up_step_down_1250kva_with_layered_dual_winding_coil.jpg","attrs":{"Place of Origin":"China","Brand Name":"HENTG Power","Model Number":"S22","Price":""}}
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 Africa3.3kV transformer400V distribution transformeroil immersed transformerONAN transformerEskom 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
Our HENTG POWER is a leading transformer manufacturer in China with over 15 years of industry experience, specializing in reliable MV and HV transformer solutions for global power systems since 2011.
With a 100,000 m² manufacturing facility, over 250 skilled workers, 30+ senior engineers, and...
Our HENTG POWER is a leading transformer manufacturer in China with over 15 years of industry experience, specializing in reliable MV and HV transformer solutions for global power systems since 2011.
With a 100,000 m² manufacturing facility, over 250 skilled workers, 30+ senior engineers, and...
