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Archive: Category «Transformers»

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Condition Monitoring of Transformers

It is possible to provide transformers with measuring devices to detect early signs of degradation in various components and provide warning to the operator in order to avoid a lengthy… Read more

May 24, 2013 | Edvard

Condition Monitoring of Transformers (on photo: distributive tranformer

Transformer Routine Dielectric (Insulation) Test

The following insulation tests are performed in order to meet the transformer insulation strength expectations. Unless otherwise requested by the customer, the following test are performed in the following order (IEC… Read more

May 23, 2013 | Edvard

Transformer Routine Dielectric (Insulation) Test

Erection Procedure for Power Transformer

This technical article deals with transformers and their installation so we restrict ourselves here to the procedures associated with their commissioning. Transformers should be inspected for internal or external damage, particularly if… Read more

May 20, 2013 | Edvard

Erection Procedure for Power Transformer

Ferroresonance Occurrence In Power Transformer

Ferroresonance occurs when line capacitance resonates with the magnetizing reactance of a core while it goes in and out of saturation. Ferroresonance is usually associated with potential transformers, which are… Read more

May 10, 2013 | Edvard

Ferroresonance Occurrence In Power Transformer

Starting Motor With Auto-transformer

An auto-transformer starter makes it possible to start squirrel-cage induction motors with reduced starting current, as the voltage across the motor is reduced during starting. In contrast to the star-delta… Read more

Mar 18, 2013 | Edvard

Starting Motor With Auto-transformer

An Overview Of Short Circuit Current (part 3)

Continued from previous technical article: An Overview Of Short Circuit Current (part 2) Fault calculations are carried out to find the magnitude of fault current at various voltage levels of… Read more

Mar 08, 2013 | Asif Eqbal

An Overview Of Short Circuit Current (part 3)

What is transformer rating based on?

In the U.S., transformers are rated based on the power output they are capable of delivering continuously at a specified rated voltage and frequency under “usual” operating conditions without exceeding… Read more

Jan 30, 2013 | Edvard

What is transformer rating based on?
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