# What factor influences the ratio between the primary and secondary voltage of a transformer?

Contents

## What are the factors that affect the secondary voltage of a transformer?

Let’s name these ten factors:

• Kilovoltampere (kVA) Rating.
• Voltage Ratings, Ratio, and Method of Connection (Delta or Wye)
• Voltage Taps.
• Typical Impedance Values for Power Transformers.
• Insulation Temperature Ratings.
• Insulation Classes.
• Sound Levels.
• Effects of Transformer Failures.

## Which are the factors that influence voltage and current in transformer?

The amount of the exciting current is determined by three factors, which are all controlled by transformer action: The amount of voltage applied. The resistance of the primary winding’s wire and core losses. The inductive reactance which depends on the frequency of the exciting current.

## What causes voltage change from a transformer primary to secondary?

If a voltage is applied to the first coil, magnetic flux will be created. If the magnitude of the applied flux changes, then the flux being generated will also change. This changing flux will link the primary and secondary coil and induce a voltage across the secondary windings.

## What are the factors affecting voltage?

The three factors, Surface area, Concentration and Temperature. Each of these factors will be explored to see how they affect the current generated by the cell.

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## Which factor that affect the primary voltage level selection?

There are some factors affecting the decisions for selecting the voltage levels of the primary feeders, such as load projection, voltage drops, feeder lengths, sub-transmission voltage, power losses, equipment availability costs, adjacent substation and feeder voltages, company policies, etc.

## What is a transformer ratio?

The transformer turns ratio is the number of turns of the primary winding divided by the number of turns of the secondary coil. The transformer turns ratio provides the expected operation of the transformer and the corresponding voltage required on the secondary winding.

## How do you find the primary and secondary current of a transformer?

In other words, i1/i2 = V2/V1. For example, if the current and voltage drop through the secondary coil is 3 amps and 10 volts, and the voltage drop through the primary coil is 5 volts, then the current through the primary coil is 10/5 * 3 = 6 amps. So the secondary has less voltage and more current.

## What determines the voltage of a transformer?

The ratio of input windings to output windings will determine the output of the transformer. … Divide the number of secondary windings by the number of primary windings, and multiply the source voltage by this ratio. This will give you the output voltage.

## What causes secondary voltage?

Secondary voltages are provided by distribution transformers that are connected to the primary system, which are usually associated with utilization voltages.

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