Durable 400KVA 10/0.4KV Oil-Immersed Transformer with Low-Loss Core for Power Distribution
Durable 400KVA oil-immersed transformer for stable rural power. Features copper/aluminum windings, strong overload capacity, low-loss core, and durable construction for reliable, long-lasting performance.
400KVA oil-immersed power transformer
,10/0.4KV low-loss distribution transformer
,durable oil-filled transformer with warranty
The HENTG POWER 400kVA 10kV/0.4kV three-phase oil-immersed transformer (ONAN) is arranged for stable medium- to low-voltage operation. It remains steady during long-term outdoor use in environments with heat, airborne dust, and varying load conditions, offering consistent voltage output, reduced loss, and a sealed tank designed for durability.
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High-Efficiency Low-Loss Core
Equipped with a cold-rolled silicon steel core, helping reduce no-load loss and supporting energy-efficient performance in long-term operation.
● Reinforced Sealing Structure for Oil Containment
Multi-layer gasket system, strengthened tank joints, and fully welded construction minimize the risk of oil leakage in harsh outdoor environments.
● Stable Temperature & Load Performance
ONAN cooling supports continuous operation under high temperature, ensuring stable output and reduced thermal stress on internal components.
● Outdoor-Grade Protection for Harsh Climates
The exterior tank features anti-corrosion coating, UV resistance, and dust-resistant structural design suitable for sand-exposed locations.
● Reliable Electrical Design
Copper windings, outdoor-grade bushings, and IEC-aligned insulation strength ensure long-term operational reliability.
| Parameter | Specification |
|---|---|
| Rated Capacity | 400 kVA |
| Phase | Three Phase |
| Frequency | 50 Hz / 60 Hz |
| Rated Voltage (HV) | 10 kV |
| Rated Voltage (LV) | 0.4 kV |
| Cooling Method | ONAN |
| Insulation Level | IEC Level |
| Vector Group | Dyn11 (optional) |
| Tap Changer | Off-circuit |
| Tap Range | ±2*2.5% |
| Winding Material | Copper |
| Core Material | Cold-rolled Silicon Steel |
| Insulating Oil | Mineral Oil |
| Tank Type | Sealed Type |
| Protection Class | Outdoor |
| Mounting Style | Ground Placement |
| Standard | IEC |
Regions with desert-style climates may face:
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Dust accumulation around external areas
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Faster gasket aging due to heat and sand
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Higher chance of oil seepage at joint areas
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Surface wear on tank walls
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Multi-layer sealing layout enhancing joint tightness
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Reinforced plates with full welding helping limit deformation
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Dust-control breather reducing dust and moisture entry
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Outdoor protective coating resisting UV and sand impact
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Heat-resistant gasket materials extending sealing performance
These adaptations support long-term stability and help reduce oil-related risks in outdoor environments.
Suitable for a range of outdoor power-distribution surroundings, including:
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Community and residential supply areas
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Light-load operational zones
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Rural and suburban distribution networks
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Building-level supply arrangements
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General medium- to low-voltage outdoor setups
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