High Voltage Step Down Transformer 20kV 0.433kV Oil Immersed Capacitor Transformer 400 To 1500kVA Strong Anticorrosion Low Noise Low Maintenance For Outdoor Africa
20kV/0.433kV oil-immersed transformer (400-1500kVA) with C3/C4/C5 anticorrosion rating, low noise design, and minimal maintenance. Built for harsh African outdoor conditions with aluminum/copper windings and custom options.
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,low noise power distribution transformer 1500kVA
,outdoor anticorrosion capacitor transformer 433V
The 20kV/0.433kV Oil-Immersed Capacitor Transformer (400–1500kVA) is designed for long-term outdoor operation in Africa’s industrial, commercial, and rural power networks.
It offers excellent anticorrosion performance, quiet operation, and low maintenance requirements, making it suitable for regions with harsh weather, unstable distribution grids, and continuous load demands.
This model ensures reliable step-down performance, delivering stable low-voltage output for factories, utilities, construction sites, villages, and mini-grid systems.
- Strong Anticorrosion Performance
Special surface treatment and reinforced tank coating effectively resist humidity, dust, coastal air, and outdoor aging, reducing long-term deterioration.
- Low Noise Design
Optimized magnetic circuit and vibration control structure help maintain quiet operation, ideal for areas near residential communities or commercial facilities.
- Long-Term Outdoor Durability
Rugged housing, sealed structure, and high mechanical strength ensure stable operation under intense sunlight, temperature changes, and outdoor exposure.
- Low Maintenance Requirements
Reliable insulation system and durable oil-immersed cooling reduce the frequency of servicing and minimize lifecycle costs.
- Stable Step-Down Output (20kV→0.433kV)
Ensures safe and efficient voltage conversion for industrial machines, lighting grids, distribution cabinets, and village electrification.
| Parameter | Specification |
|---|---|
| Rated Capacity | 400–1500 kVA |
| Primary Voltage | 20kV |
| Secondary Voltage | 0.433kV |
| Phase | Three-phase |
| Frequency | 50Hz / 60Hz |
| Cooling Method | ONAN |
| Vector Group | Dyn11 |
| Tap Changer | Off-circuit tap changer |
| Tap Range | ±2×2.5% |
| Insulation Level | As per IEC 60076 |
| Application Type | Outdoor |
| Installation | Pole-mount or ground-mount optional |
- Manufacturing plants & small industries
- Utility distribution networks
- Rural electrification & mini-grids
- Commercial complexes & public facilities
- Construction sites and infrastructure projects
- Adapted for High Temperature Environments
Oil cooling and heat-resistant materials maintain stability in hot climates.
- Withstands Harsh Outdoor Conditions
UV, dust, rainfall, and humidity resistance make it suitable for long-term external installation.
- Supports Weak and Fluctuating Grids
Delivers stable output even when input voltage varies.
- Long Service Life
Reliable insulation and mechanical strength ensure years of dependable use.
The oil-immersed cooling system provides excellent heat dissipation, while the high-temperature insulation materials maintain stability under prolonged load. Even in regions with hot daytime temperatures, the transformer can operate safely without overheating.
Maintenance is minimal. Periodic oil condition checks, basic visual inspection, and cleaning of external dust are typically sufficient. The sealed tank structure reduces the risk of moisture ingress, extending service intervals and lowering lifecycle cost.
Yes. The transformer is designed to tolerate moderate fluctuations in primary voltage. Its stable magnetic circuit and efficient step-down system help ensure consistent low-voltage output for downstream equipment.
The tank undergoes surface treatment including rust removal, primer coating, and outdoor-grade finishing. These layers protect against humidity, rain, dust, and coastal air, making the transformer suitable for harsh African environments.
Get in touch with our team today for fast quotations and tailored transformer solutions.
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