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Archive: Category «Transformers»

How to choose transformer rating?

When an installation is to be supplied directly from a MV/LV transformer and the maximum apparent-power loading of the installation has been determined, a suitable rating for the transformer can… Read more

Mar 12, 2011 | Edvard

Risk and Consequences Of Transformer Fire

The risk of a catastrophic fire with a properly inspected, tested, and maintained transformer is small. Proper maintenance and thorough testing of the transformer will prevent or detect many events… Read more

Feb 07, 2011 | Edvard

Risk and Consequences Of Transformer Fire

How To Connect Current Transformers?

The primary of a current transformer typically has only one turn. This is not really a turn or wrap around the core but just a conductor or bus going through… Read more

Jan 29, 2011 | Edvard

How To Connect Current Transformers?

Price Of A Transformer

Today the production of transformers is characterised by a large variety of designs, manufactured in relatively short batches to meet the demands of a variety of customers with ever-changing expectations…. Read more

Jan 26, 2011 | Edvard

Price Of A Transformer

NEMA TP1 Energy Efficiency Standard

Most commercial and industrial facilities require several low-voltage transformers to decrease the voltage received from the utility to the voltages used by various loads such as lighting, computers and other… Read more

Jan 08, 2011 | Edvard

NEMA TP1 Energy Efficiency Standard

Transformer Losses Standards

Unlike many countries around the world, Europe has no mandatory standard on energy efficiency of distribution transformers. The two main documents which describe losses in transformers are: the European Standard… Read more

Jan 07, 2011 | Edvard

Transformer Losses Standards

Parallel Operation Of Transformers

Most transformers installed in parallel have the same kVA, turn ratios, and impedances, which can make it difficult for power engineers in industrial and commercial facilities to understand circulating currents… Read more

Jan 05, 2011 | Edvard

Parallel transformers - Siemens

Transformer Cooling Classes

Since no transformer is truly an “ideal” transformer, each will incur a certain amount of energy loss, mainly that which is converted to heat. Methods of removing this heat can… Read more

Nov 28, 2010 | Edvard

Transformer Cooling Classes


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