What is the advantage of using percentage reactance instead of ohmic reactance in short circuit calculation?

Percentage reactance values remain unchanged as they are referred though transformers, unlike ohmic reactances which become multiplied or divided by the square of transformation ratio. This makes the procedure simple and permits quick calculations.

What is percentage reactance?

Percentage Reactance of Power System: Percentage reactance can be defined in the same way as percentage resistance. It is the voltage drop across the given reactance expressed as percentage of normal voltage when carrying full-load current pertaining to normal rating, i.e., \%X = (IX/V) × 100 … (1.2)

What are the two types of reactance?

Reactance is of two types: inductive and capacitive.

What is the advantage of using percentage?

Percentage is a very handy way of writing fractions. Percentages can be compared more easily than fractions. Financial institutions quote interest charged to the client on loans, or interest paid for money invested, as a percentage.

What is Z in transformer?

The percentage impedance of a transformer (Z\%) is the voltage drop on full load due to the winding resistance and leakage reactance expressed as a percentage of the rated voltage. The ratio of voltage applied to circulate full load current to the primary voltage is the percentage impedance of the transformer.

What is percentage impedance?

The percent impedance is the percent voltage required to circulate rated current flow through one transformer winding when another winding is short-circuited at the rated voltage tap at rated frequency. \%Z is related to the short circuit capacity of the transformer during short circuit conditions.

What is the percent resistance?

Percent of Resistance (PCR) is an oscillator that compares a security’s closing price to its price range over a given time period. It is similar in function to the Stochastic Oscillator.

What is percentage of reactance and base KVA *?

\% Reactance at Base KVA = (Base KVA x \% impedance at Rated KVA) / Rated KVA. \% Reactance at Base KVA = (2.5X6)/2.5. \% Reactance at Base KVA =6\%

What is reactance used for?

In electrical circuits, reactance is the opposition presented to alternating current by inductance or capacitance. Greater reactance gives smaller current for the same applied voltage.

What causes reactance?

Inductive reactance is caused by devices in which wire is wound circularly — such as coils (including line reactors), chokes, and transformers. Reactance that occurs in a capacitor is known as capacitive reactance.

What are the advantages of using percentages over using fractions and decimals?

We use percentages to make calculations easier. It is much simpler to work with parts of 100 than thirds, twelfths and so on, especially because quite a lot of fractions do not have an exact (non-recurring) decimal equivalent.