320KVA Oil Immersed Transformer

The 320KVA Oil Immersed Transformer by GUANGBIAN is a custom-engineered solution developed for a petrochemical plant in the UAE with an ultra-high impedance requirement far beyond standard transformer design.

As a professional China transformer manufacturer, GUANGBIAN tailored this unit to meet strict system protection and fault-control demands in high-risk industrial environments.

Key Features

● Ultra-High Impedance Design

● Standard transformers: 4%–6% impedance

● This unit: customized higher impedance

Benefits:

● Effectively limits short-circuit current

● Protects downstream equipment

● Improves system safety in critical industrial zones

Key Technical Advantages

High Efficiency & Low Energy Loss

The core is made of high-grade cold-rolled silicon steel sheets, optimized to reduce no-load losses and improve overall energy efficiency, helping customers reduce long-term electricity costs.

Strong Overload Capacity

Designed to handle temporary load surges, making it suitable for environments with frequent motor starts or fluctuating power demand.

Excellent Heat Dissipation System

The oil-immersed cooling structure ensures:

● Fast heat transfer

● Stable temperature control

● Reduced risk of overheating failure

● High Safety & Insulation Strength

The transformer oil provides superior dielectric strength, effectively preventing short circuits and insulation breakdown under harsh electrical conditions.

Low Noise Operation

Optimized core lamination and structural design significantly reduce electromagnetic noise, making it suitable for residential and urban installations.

Performance Benefits Compared to Standard Transformers

Compared with traditional distribution transformers, the 320KVA oil immersed transformer offers:

● Lower no-load and load losses

● Improved thermal stability

● Longer service life (typically 20–30 years)

● Reduced maintenance frequency

● Higher short-circuit withstand capability

● Better adaptability to voltage fluctuations

Technical Document

Operating Environment

320KVA Oil Immersed Transformer Operating Environment Requirements

Temperature: -20℃ ~ +45℃;

Humidity: ≤95% (non-condensing);

Altitude: ≤1000m (deratable above 1000m)

Our Factory

Sheet metal workshop

Foil winding workshop

Winding workshop

Winding oven workshop

Transformer assembly workshop

Transformer commissioning workshop

Installation & Maintenance

Installation Notes

● Install on a flat, well-ventilated foundation

● Ensure proper grounding system

● Maintain safe clearance distances

● Avoid exposure to corrosive environments

Maintenance Recommendations

● Regular oil testing (dielectric strength & moisture level)

● Check bushing connections and tightening status

● Monitor temperature rise during operation

● Periodic cleaning of dust and debris

Proper maintenance ensures stable operation and extended service life.

FAQ

Q1: What is the primary use of a 320KVA transformer?

It is mainly used for stepping down medium voltage (6KV–11KV) to low voltage (400V) for industrial and commercial power supply.

Q2: Is copper winding better than aluminum?

Yes. Copper windings offer lower resistance, better conductivity, and higher durability, especially for heavy-load applications.

Q3: Can it operate in outdoor environments?

Yes, the oil-immersed sealed structure is suitable for outdoor installation with proper protection.

Q4: What is the maintenance requirement?

Routine oil testing and connection inspection are sufficient for stable operation.