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Transformers rated 1 KVA and larger single phase,3 KVA and larger three phase can be reverse connected without any adverse effects or loss in KVA capacity. The reason for this limitation in KVA size is, the turns ratio is the same as the voltage ratio. On transformers rated below 1 KVA single phase, there is a turns ratio compensation on the low voltage winding. This means the low voltage winding has a greater voltage than the name plate voltage indicates at no load. Terminals on a single wound transformer, primary side are labeled H1,and H2 and on the secondary side X1 and X2. Just reverse the input voltage to the X1 and X2 terminals and the take the load off of the H1 and H2 side.

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14y ago
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16y ago

A step up transformer has more turns on the secondary (output) coil than the primary (input) coil. A step down transformer has less turns on the secondary (output) coil than the primary (input) coil

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12y ago

A transformer is made from two or more coils of wire wound around an iron core. When some voltage is applied to one of the coils it magnetizes the iron core, which induces a voltage in the other coil. There is a turns ratio where of the two sets of windings determines the amount of voltage transformation.

a step up transformer makes a voltage higher than before it does this by having more turns on the secondary coil then the primary coil.

a step down transformer makes a voltage lower then it was before it reaches it, it does this by having less turns on the secondary coil then the primary coil.

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10y ago

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Q: How does a step up and step down transformer work?
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Related questions

What is the purpose of transforms?

A transformer is used to step up or step down a Voltage supply.


Can a step up transformer work as a step down transformer?

Sure. The description only depends on which side gets the excitation and which side provides the output. Excite the shorter winding and you have a step-up. Excite the longer winding and you have a step-down.


How do you produce a step-up transformer in an ordinary transformer?

Transformer function is either to step-up or down the voltage. There is nothing like an ordinary transformer.


Device used to step voltage up or down?

As transformers do not work with DC., the answer is a voltage divider network (step down) or a voltage multiplier network (step up).


What is the different between et up and set down transformer?

the difference between a step up transformer and a step down transformer is that, in a tsep up transformer, the voltage secondary is greater than the primary side but in a step down transformer, the voltage secondary is lesser than the primary side


What is the differences between a step-down transformer and a step-up transformer?

the main function of transformer is to change the magnitude of Voltage. difference between step up and step down is step up will change the input voltage into a larger magnitude of output while step down is vice versa


Can one step up power from inverter with step-up transformer?

No. You can not step up power with a transformer. You can step up voltage, while stepping down current, or you can step up current, while stepping down voltage, but you cannot step up (or down) power.


Where can i buy a step down transformer online?

You can go to ebay.com. Then sign up for an account and search for "step down transformer."


How can you see that the transformer is a step down or a step up?

If the primary voltage (input) is less than the secondary (output) then it is a step-up. If the input is greater than the output then it is a step-down transformer.


When is a step up transformer used in relationship as to when a step down transformer is used?

If the voltage needs to be increased from a lower voltage to a higher voltage a step up transformer is used. If the voltage needs to be lowered from a higher voltage to a lower voltage a step down transformer is used.


Why transformer is used?

A transformer used to step up or down the value of voltage.


What will happen to frequency of current when voltage is changed using a step up or step down transformer?

Frequency does not change when you use a step-up or step-down transformer. Only current and voltage is changed.