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Technical articles, application insights, white papers and product updates for electrical equipment.
2 min read

Can I use Midel ester fluids in free breathing transformers?

ANSWER: There are a range of MIDEL fluids to suit all types of transformer preservation systems. For breathing transformers, we recommend ...
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2 min read

How do I use dissolved gas analysis (DGA) with Midel ester fluids?

ANSWER: Using much the same oil sampling and analysis methods you would use for mineral oil. The gasses esters produce during electrical ...
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2 min read

How do Midel ester transformers fluids perform in the cold?

ANSWER: There are a range of MIDEL fluids to suit various climatic conditions. The performance of each fluid under cold climate conditions ...
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2 min read

What are the requirements when retrofilling transformers with Midel fluids?

ANSWER: There are four main steps to follow to retrofill transformers with ester fluids, as follows: 1. Set up retrofilling plant Follow ...
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1 min read

Is interfacial tension a meaningful property for MIDEL fluids?

ANSWER: Interfacial Tension (IFT) is routinely used as an indicator of polar contaminants in mineral oil and can be directly related to oil ...
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1 min read

Can Midel ester fluids heal existing insulation problems in a transformer?

ANSWER: No. MIDEL fluids cannot “regenerate” insulation materials. Degradation of the solid cellulose insulation in transformers ...
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1 min read

Eco Friendly Energy with Transformer Ester Fluids

Environmentally friendly energy production The growth and popularity of wind, solar, hydro, wave/marine power continues year on year. These ...
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1 min read

How do you process and handle used transformer ester fluids?

ANSWER: Depending on their condition, Midel fluids can be reprocessed and reclaimed using similar equipment and methods to mineral oil. ...
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2 min read

What is the Power Factor of MIDEL ester fluids?

ANSWER: Power factor is the ratio of resistance current to capacitance current in an insulation system. In new mineral oil transformers ...
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1 min read

Can I use Midel fluids to retrofill transformers at high voltages?

ANSWER: For retrofilling transformers, it depends upon the voltage and power rating of the asset. High Voltage Transformers using Midel ...
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