Auto transformer

23/05/2011 by 2 Comments

This is a one from several types of transformer.It usually used for motor starter,we recognize it by name “auto transformer starter”.Basically design for auto transformer only have a single winding and provided with tap connection for step up or down.

It have magnetic core with single winding which common primary and secondary circuits.The primary connection is connected with main AC power supply and secondary connection is connected with load.

If the primary is the total winding and is connected to a supply and the secondary circuit is connected across only a portion of the winding,It mean this is for stepped down voltage. read more

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Three phase transformer winding

03/05/2011 by 7 Comments

In the market now,commonly it have three methods of three phase transformer winding such as a star, delta and zig-zag. Each method can be applied to either or both of the primary and secondary winding of transformer.

This connection must suitable with our output voltage for application and equipment.We should decide which connection is suitable and not effected when power supply energizes.

This 3 types of winding is used for different application and we need to identify a suitable condition to apply this types of transformer winding.This time i want shared some information about transformer winding. read more

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Voltage transformer

29/01/2011 by 9 Comments

This device is very common used in electronic/electrical industry in the world.Start from small transformer for electronic equipment until big transformer for High voltage  power transmission.Transformer is important device in our life every day.

The main purpose of voltage Transformer is a changing or “transform” the value of voltage ( single or three phase ) .

It can step up the voltage value ; example : 110VAC step up to 240VAC ( For power supply usage )  or 11 kVAC step up to 33 kVAC ( for power transmission).

It also can step down the voltage value ; example : 240 VAC step down to 24 VAC ( For rectifier power supply) or 11 kVAC step down to 415 VAC ( For Consumer power supply ). read more

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