50KVA 20KV Oil Immersed Transformer

As an experienced China power transformer supplier, GUANGBIAN also assists clients in deploying this 50KVA 20KV Oil Immersed Transformer as a capacity expansion upgrade for commercial premises and office buildings. For numerous aging retail outlets and office buildings, the existing transformer capacity is often inadequate when additional electrical loads (e.g., air conditioning systems) are introduced. Deploying this 50Kva Transformer unit directly fulfills the augmented power demand without the need to replace the original transformer, thereby achieving significant construction cost savings.

Technical Document

Operating Environment

Temperature Conditions:

Long-term Operating Ambient Temperature: -25℃ ~ +45℃.

Maximum Operating Ambient Temperature: Not exceeding +50℃.

Storage and Transportation Temperature:

-40℃ ~ +60℃.

Humidity Conditions:

Relative Humidity: ≤95% at 25℃

Altitude Requirements:

Rated Altitude Adaptation Range: ≤1000 meters

Advantages

Transformer Core Advantages

GUANGBIAN uses high-permeability cold-rolled grain-oriented silicon steel sheets to manufacture transformer cores. The core adopts a step-lap structure design, which reduces magnetic resistance and operating noise while improving energy efficiency.

Advantages include:

Lower no-load current

Reduced core loss

Lower operating temperature

Improved energy efficiency

Stable long-term operation

Winding Structure Advantages

The winding system is manufactured using oxygen-free copper conductors with excellent conductivity and mechanical strength.

Copper Winding Benefits

● Better conductivity

● Lower temperature rise

● Stronger overload capability

● Longer service life

● Better short-circuit resistance

Aluminum winding options are also available according to customer budget requirements.

Cooling System

The transformer adopts the ONAN cooling method (Oil Natural Air Natural), which uses natural oil circulation and air convection to dissipate heat efficiently without additional cooling equipment.

Benefits include:

● Lower maintenance costs

● Reduced operational complexity

● Stable cooling performance

● Lower operating noise

Protection & Safety Features

The 50KVA 20KV Oil Immersed Transformer can be equipped with multiple protection devices, including:

● Pressure relief valve

● Oil temperature indicator

● Oil level gauge

● Buchholz relay

● Lightning arrester

● Overload protection system

These protection systems improve transformer safety and operational reliability.

Our Factory

Sheet metal workshop

Foil winding workshop

Winding workshop

Winding oven workshop

Transformer assembly workshop

Transformer commissioning workshop

FAQ

1.What is the service life of a 50KVA 20KV Oil Immersed Transformer?

Under normal operating conditions and proper maintenance, the service life can exceed 25 years.

2.Can the transformer be customized?

Yes. Voltage, frequency, winding material, tap changer, and protection devices can all be customized according to project requirements.

3.Which is better, copper winding or aluminum winding?

Copper winding offers better conductivity, overload capability, and longer service life, while aluminum winding provides a more economical solution.

4.What standards does the transformer comply with?

The transformer can comply with IEC, ANSI, GB, and other international standards according to customer requirements.