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This 480-v three-phase transformer probably has a 208-v three-phase secondary which has 120 v from each line to neutral. In that case the primary current is 0.433 times as much as the secondary current, so 100 amps in the secondary means 43.3 amps in the primary.

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How many amps will a 10 kva transformer handle?

It depends on how many amps it was designed for. A 12.5kV/600v 10kVA 3 phase transformer can handle ~.5 amps on the primary and ~10A on the secondary. A 600/120V 10kVA 3 phase transformer can handle ~10A on the primary and ~50 on the secondary.


Difference between input and output transformer?

The 'input' side of a transformer is called its 'primary' side, whereas the 'output' side is termed its 'secondary' side. The ratio of its secondary to primary voltage is equal to the ratio of the number of turns in the secondary windings to the number of turns in the primary winding. So if, for example, a transformer's secondary winding has twice as many turns as its primary winding, then the secondary winding will produce twice the voltage applied to the primary winding.


An isolation transformer has 500 turns on the primary winding how many turns are on the secondary?

An isolation transformer is intended to isolate the ground path in the primary from the secondary while maintaining the same voltage on the secondary. This means a turns ratio of 1 to 1. If there are 500 turns on the primary, then there will be 500 turns on the secondary.


What type of voltage is passed trough a transformer?

Voltage doesn't 'pass through' anything! Voltage is another word for 'potential difference', and is measured between two points in a circuit. For a transformer to work, it's necessary to apply an a.c. voltage across the transformer's primary terminals.


How many coils does a autotransformer have?

only single coil is use as a primary and secondary coil in a auto transformer.

Related Questions

How many amps will a 10 kva transformer handle?

It depends on how many amps it was designed for. A 12.5kV/600v 10kVA 3 phase transformer can handle ~.5 amps on the primary and ~10A on the secondary. A 600/120V 10kVA 3 phase transformer can handle ~10A on the primary and ~50 on the secondary.


How many amps does a 3 kva transformer draw?

The primary current of a transformer depends upon the secondary current which, in turn, depends upon the load supplied by the transformer. There is not enough information in the question to determine the rated primary and secondary currents of the transformer.


How can find the primary turns of the transformer knowing the primary voltage of the transformer?

The ratio of the primary voltage to the secondary voltage is proportional to the ratio of windings. So if the primary voltage is 120 volts and the secondary is 240 volts there are twice as many turns in the secondary.AnswerAs the previous answer says, you can work out the turns ratio of a transformer, but knowing the primary and secondary voltages will not help you determine how many turns are on each winding.


Difference between input and output transformer?

The 'input' side of a transformer is called its 'primary' side, whereas the 'output' side is termed its 'secondary' side. The ratio of its secondary to primary voltage is equal to the ratio of the number of turns in the secondary windings to the number of turns in the primary winding. So if, for example, a transformer's secondary winding has twice as many turns as its primary winding, then the secondary winding will produce twice the voltage applied to the primary winding.


An isolation transformer has 500 turns on the primary winding how many turns are on the secondary?

An isolation transformer is intended to isolate the ground path in the primary from the secondary while maintaining the same voltage on the secondary. This means a turns ratio of 1 to 1. If there are 500 turns on the primary, then there will be 500 turns on the secondary.


How many bushing do you get on delta to star transformer?

Your use of the word "bushings" implies you are dealing with a high-voltage transformer (over 600 volt). A three phase STEP-DOWN transformer normally has 3 bushings on the Primary side regardless of whether it is star-delta or another type. The Secondary side might have 3 or 4. A single phase transformer normally has 2 bushings on the Primary side and 2 or 3 on the Secondary side. If the transformer is being used to STEP-UP, it would be reversed from above. If this does not answer your question, I need more info.


How many turns in secondary coil in Transformer?

It depends on the type of transformer.If it is a step up transformer the number of turns in secondary side is higher than primary.Stepdown means it will have fewer number of windings on the secondary side turns when compared with the primary side.An isolation transformer has the same number of windings on the primary as the secondary.The ratio of the windings is proportional to the increase or decrease in the secondary voltage. For example, twice the windings doubles the voltage and 1/2 the windings halves the secondary voltage. The isolation transformer is denoted as 1:1 and has the same voltage on the secondary as the primary.The ratio of secondary turns to primary turns is the same as the ratio of secondary voltage to primary voltage.e.g. if the secondary to primary turns ratio is 1/10, then the secondary voltage will be one tenth of the primary voltage.


How many amps do you need to supply a 150kva transformer to get 118amps 480 volts?

Rephrase your question, as it doesn't make any sense. If the primary side of the transformer is 480 volts 3 phase, this transformer can be supplied from a breaker as big as 180 amps. If 480 volts 3 phase is your secondary then you can supply up to 180 amps to your loads.


What type of voltage is passed trough a transformer?

Voltage doesn't 'pass through' anything! Voltage is another word for 'potential difference', and is measured between two points in a circuit. For a transformer to work, it's necessary to apply an a.c. voltage across the transformer's primary terminals.


How many coils does a autotransformer have?

only single coil is use as a primary and secondary coil in a auto transformer.


What value for a transformer determines the amount of voltage that is stepped up or down?

For an ideal transformer, the voltage ratio is exactly the same as its turns ratio. So if, for example, there are twice as many turns on the secondary winding as there are on the primary winding, then the secondary voltage will be twice that of the primary and the transformer will be a 'step up' type.


How many amps does a 277 volt primary and 120 volt secondary transformer draw with 6 amps on the secondary?

Assuming the transformer is ideal, the current on the primary side can be calculated using the formula for power: P(primary) = P(secondary). Since power is the product of voltage and current, the current on the primary side would be 1.38 amps (277V x Iprimary = 120V x 6A).