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Aluminium Transformer Coil

Aluminum is often substituted for copper as a transformer’s conductor. This design decision is part of an engineering approach that can greatly increase the total cost of owning a transformer. The use of aluminum does not necessarily signify that a transformer will have a short life span. But...
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Aluminum is often substituted for copper as a transformer’s conductor. This design decision is part of an engineering approach that can greatly increase the total cost of owning a transformer. The use of aluminum does not necessarily signify that a transformer will have a short life span. But aluminum is commonly a characteristic of transformers that fail in 10 to 15 years. Keep in mind that a properly designed transformer can perform for 50 years (or longer). If you’re not careful, your decision to save a few dollars today can be very expensive over time — you might have to replace that cheap transformer five (5) times during the comparable lifespan of a well built transformer.

Aluminum Winding is Cheaper Than Copper Winding

A high percentage of low voltage transformers rated 15 KVA or larger use aluminum windings. MJ Aluminium’s utility industry clients report that nearly all new service entrance connections at commercial industrial facilities use aluminum conductors. The technology has become commonplace over the past 30 years. Price is an important factor in the rise in popularity of aluminum.

Aluminum magnet wire costs less than copper magnet wire. While this difference may not seem like much, you have to know that commodity transformers are engineered to exploit EVERY small source of savings. By skimping on your conductor material, the manufacturer can saves a little amount of money.

Comparing Copper and Aluminum

Characteristic

Aluminum

Copper

Thermal Conductivity

0.57 (Cal/s-cm-K)

0.94 (Cal/s-cm-K)

Electrical Resistivity

2.69 (X 10^8, Ohm-m)

1.673 (X 10^8, Ohm-m)

Expansion Coefficient

23.5 (X 10^6, 1/Deg.C)

17.0 (X 10^6, 1/Deg.C)

Tensile Strength

12,000 (lb/in)^2

32,000 (lb/in)^2

MJ Aluminium Transformers are Not Commodity Transformers

Commodity Transformer

MJ Aluminium Transformer

application generic

application specific

cheap materials

premium materials

hasty assembly

meticulous attention to detail

liberal quality control

rigorous testing standards

automated mass production

hand-crafted batch production

10-15 year lifespan

50+ year lifespan

Our company, Shanghai Mj, is one of the best aluminium transformer coil manufacturers and suppliers in China for its quality products and excellent services. All of the products are made in our professional factory. Welcome to buy the quality aluminum products for sale at reasonable price with us.

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