Please enter keywords to search

Global |EN

Choose your country & Language

Asia Pacific

Australia & New Zealand
India
Indonesia
Korea
Malaysia
Singapore (Sunlight)
Vietnam

West Asia and Africa

CHINT-EGEMAC
South Africa
UAE

Europe

Italy
Spain
Turkey

North America

Mexico

Latin America

Brazil
Peru

Choose your country & Language

Australia & New Zealand
India
Indonesia
Korea
Malaysia
Singapore (Sunlight)
Vietnam
CHINT-EGEMAC
South Africa
UAE
Italy
Spain
Turkey
Mexico
Brazil
Peru

Please enter keywords to search

Your search term contains restricted words. Please use different keywords.

Dry Type Transformer VS Oil Filled Transformer

MAY 27, 2022

CHINT-110kV-power-transformer-1536x913-20220527
CHINT-110kV-power-transformer-1536x913-20220527
CHINT-110kV-power-transformer-1536x913-20220527

Table of Contents

  1. What is a Dry-Type Transformer?
  2. What is an Oil-Filled Transformer?
  3. Dry-Type Transformers vs. Oil-Filled Transformers: Key Differences
  4. CHINT Dry-Type and Oil-Filled Transformer
  5. Final Wordings

Dry-type transformer vs. oil-filled transformer is the most common debate in the market today. If you, too, are confused about whether to go for dry-type transformers or oil-filled transformers, then read this article till the end!

This post is the ultimate guide for people confused about how they differ from each other.

Transformers are becoming increasingly popular for altering the voltage in conventional power circuits. Whether you want to reduce the voltage to operate low-powered devices or raise the voltage to allow for long-distance electric power transmission, transformers are the way to go!

There are two types of transformers: dry-type transformers and oil-filled transformers. Even though they have the same objective, these transformers differ significantly. These distinctions are significant enough that the different transformer types are better suited to specific applications.

This article highlights the differences between dry-type transformers and oil-filled transformers. You will distinguish between their cost, maintenance, noise, energy efficiency, etc. So, let’s get started, shall we!

What is a Dry-Type Transformer?

A dry-type transformer is a motionless piece of equipment that uses environmentally acceptable temperature insulation systems. They are also known as “cast resin type transformers.”

The transformer is housed in a case with adequate ventilation, which results in the coils being cooled by the air inside the case. Additionally, they include varnished copper or aluminum windings. Because of the cooling constraints, dry-type transformers’ maximum voltage is restricted to 35kV.

Types of Dry-Type Transformers

The global market for dry-type transformers is estimated to increase at a CAGR of 6.1 percent from 2020 to 2027 due to increasing advancements in the types of dry-type transformers. There are several different types of dry-type transformers on the market, including:

  • Vacuum Pressure Impregnated (VPI) Transformers
  • Vacuum Pressure Encapsulated (VPE) Transformers
  • Open Wound Transformers
  • Cast Coil Transformers

Dry-type transformers have a wide range of commercial, industrial, and utility applications. They are commonly utilized in small and medium-voltage applications in electric equipment.

What is an Oil-Filled Transformer?

Oil-filled or oil-immersed transformers are voltage conversion devices that use oil to keep the transformer cool. This type of transformer structure is mounted in a welded steel oil tank filled with oil.

When an oil-immersed transformer is in use, the heat generated by the coil and iron core is first transferred to the insulating oil, then to the cooling fluid. Due to the liquid’s inflammability, oil-filled transformers are mostly used in outdoor installations.

Types of Oil-Filled Transformers

The oil-filled transformer industry exceeded $28.3 billion in 2020. The market is expected to grow at about 3.5% between 2021 and 2027. There are two main types of oil-filled transformers:

  • 1-Phase Transformers
  • 3-Phase Transformers

Oil-type transformers can be put on the ground, on a pad, or on a pole. They function well in various environments, including transmission and distribution lines, renewable energy generation, and small businesses.

220kV-Power-Transformer-1-20220527
220kV-Power-Transformer-1-20220527
220kV-Power-Transformer-1-20220527

Dry-Type Transformers vs. Oil-Filled Transformers: Key Differences

Take a look at the differences between dry-type and oil-filled transformers to understand how they perform.

1- Cooling Medium

Transformers overheat under load. They need a cooling medium to prevent overheating and potentially causing a fire or explosion.

The most significant distinction between the two transformers is their cooling medium. Dry-type transformers employ air as a cooling medium, while oil-filled ones, as the name suggests, use oil.

2- Maintenance

Oil-filled transformers are more high maintenance than dry-type ones. Oil-filled transformers require additional attention because the oil must be tested for chemical contamination regularly. Additionally, they require oil filtration at least once a year.

Dry-Type Transformers, on the other hand, are chemically resistant. Even if a minor event occurs, they do not need to be disconnected from the grid.

3- Operational Cost

You might assume that oil-filled transformers entail higher costs than the dry types. However, the reality is the contrary.

Oil-filled transformers are less expensive because they use conventional energy efficiency, making them dependable and long-lasting. Dry transformers use more energy and entail a higher operational cost.

4- Recyclability

Dry-type transformers have a restricted coil recycling at the end of their service life, whereas oil units have a much easier core recycling.

5- Efficiency

Oil-filled transformers are more efficient than dry-type transformers, which are larger and have a lower voltage rating. Thus, the dry types are more prone to overheating during overload, resulting in higher electrical losses and maintenance costs.

6- Location

This is arguably the most significant consideration when choosing a transformer and a major difference between the two. Oil-filled transformers are typically installed outdoors due to the risk of an oil spill, which could pose a serious threat.

Dry-type transformers are specifically utilized in buildings since they are less hazardous and safer for the environment. They’re also less explosive, so they’re utilized in malls, offices, hospitals, etc.

Amorphous-Alloy-Core-Dry-type-Transformer-20220527
Amorphous-Alloy-Core-Dry-type-Transformer-20220527
Amorphous-Alloy-Core-Dry-type-Transformer-20220527

CHINT Dry-Type and Oil-Filled Transformer

Although these distinctions are widely regarded as general guidelines, there is always room for exceptions. Many of the world’s largest transformer manufacturers, like CHINT Global, are making significant technological advancements.

If you are confused about which brand to go for, take a look at these best-selling CHINT dry-type and oil-filled transformers:

Amorphous Alloy Core Dry-Type Transformer

This dry-type transformer is formed of amorphous alloy ribbon, an innovative type of energy-saving semiconductor. The ribbon comprises iron, silicon, boron, carbon, and other compounds.

Amorphous alloy core provides high saturation magnetic induction, high resistivity, minimal loss, and other advantages over standard magnetic materials.

The CHINT amorphous alloy core dry-type transformer is good for volatile and explosive environments. It is ideal for high-rise buildings, shopping plazas, airports, subways, railway stations, and industrial sectors.

Features:

  • Lower operating noise
  • Short-circuit resistant
  • Excellent thermal performance
  • Excellent moisture, fire, and explosive resistance
  • Compact and lightweight

220kV Power Transformer

The CHINT 220kV Power Transformer has a large capacity. Thus, it will save a significant amount of electrical energy, prevent power loss, conserve energy sources, and lower user expenses.

It features a magnetic core, windings, and brushings. Their coils and core are submerged in oil, cooling and insulating them. Convection transports oil via ducts in the coils and around the core assembly.

The CHINT 220Kv Power Transformer is ideal for power plants, power stations, and large-scale industrial applications.

Features:

  • High operational security and dependability
  • Cost-effective
  • Great insulation capabilities
  • Compact and lightweight
  • Low noise generation
  • Fast delivery

Final Wordings

Based on our dry-type transformer vs. oil-filled transformer analysis, oil-filled transformers appear to be a better alternative in terms of energy-saving, cost-saving, and recyclability. Dry-type transformers, on the other hand, are safer for interior operations.

Whether you’re looking for an oil-filled or dry-type transformer, you should always deal with a trusted provider that offers the finest items on the market CHINT dry-type transformers, and oil-filled transformers are the finest choice in this case. With CHINT, you are sure to receive top-quality equipment at reasonable rates!

The Latest
NOVEMBER 28, 2024 DC Meter: Principles, Technology, and Applications

This article will explore the working principles of DC meters, their technical composition, and the applications in various scenarios.

NOVEMBER 26, 2024 Beyond the Basics: Smart Circuit Breakers for Intelligent Protection

Smart circuit breakers are a solution for the needs of today’s world. This article explores the advantages of these intelligent devices and more.

NOVEMBER 5, 2024 Can I Use General Miniature Circuit Breaker (MCB) for PV?

Miniature circuit breakers are widely adopted. They are used for branch circuit protection in many electrical systems. However, as solar photovoltaic technology continues to expand rapidly, one question arises: Can I use a general miniature circuit breaker for PV?

NOVEMBER 5, 2024 Top 3 Pain Points of Data Center Operations

In today’s digital age, data centers have become critical infrastructure. They enable our increasingly online lives and economies. They store massive amounts of data and power cloud services and applications.

SEPTEMBER 10, 2024 A Complete Guide to LV Distribution Board

LV distribution boards, part of the electrical distribution system, securely distribute low-voltage power to facility circuits.

SEPTEMBER 9, 2024 A Guide to Ring Main Units (RMU) in Wind Power Industry

An RMU, or ring main unit, is a type of medium-voltage switchgear. It consists of one or more circuit-breaker units with associated disconnectors, earthing switches, and instrument transformers.

SEPTEMBER 9, 2024 How to Choose a House Distribution Box

A well-chosen distribution box ensures the safety and efficiency of your household electrical system. This article guides you through selecting a distribution box.

SEPTEMBER 9, 2024 How Does a Variable Frequency Drive Work?

This article discusses in detail how a variable frequency drive works. Its working generally includes rectification, filtration, and inversion.

JULY 14, 2024 Metal Oxide Arrester (MOA) Overview: Working Principle, Types, Applications

This article discusses how a metal oxide arrester works and introduces its types and applications.

JULY 14, 2024 A Guide to CHINT Smart Handheld Test Unit

CHINT Smart Handheld Test Unit provides a reliable solution for testing ACB protection functions without risk of damage.