FormulaDen.com

Physics Chemistry Math Chemical Engineering Civil Electrical Electronics Electronics and Instrumentation Materials Science Mechanical Production Engineering Financial Health

Short Circuit Ratio Formula

Fx Copy

LaTeX Copy

The short circuit ratio can be calculated from the open-circuit characteristic (O.C.C) at rated speed and the short circuit characteristic (S.C.C). Check FAQs

SCR = \frac{1}{X s}

SCR - Short Circuit Ratio?X_s - Synchronous Reactance?

Short Circuit Ratio Example

With values

With units

Only example

Here is how the Short Circuit Ratio equation looks like with Values.

Here is how the Short Circuit Ratio equation looks like with Units.

Here is how the Short Circuit Ratio equation looks like.

2.5 = \frac{1}{0.4}

2.5 = \frac{1}{0.4Ω}

2.5 = \frac{1}{0.4}

Tip: Use pencil ( Pencil

) icon above to edit Input Values and Units.

Calculate

Recalculate

Solution

Copy

Reset

You are here -

Home » Category

Engineering » Category

Electrical » Category

Electrical Machine Design » fx Short Circuit Ratio

Short Circuit Ratio Solution

Follow our step by step solution on how to calculate Short Circuit Ratio?

FIRST Step Consider the formula

SCR = \frac{1}{X s}

Next Step Substitute values of Variables

∴

SCR = \frac{1}{0.4Ω}

Next Step Prepare to Evaluate

∴

SCR = \frac{1}{0.4}

LAST Step Evaluate

∴

SCR = 2.5

Short Circuit Ratio Formula Elements

Variables

Short Circuit Ratio

The short circuit ratio can be calculated from the open-circuit characteristic (O.C.C) at rated speed and the short circuit characteristic (S.C.C).

Symbol: SCR

Measurement: NAUnit: Unitless

Note: Value should be less than 100.

Formulas to find Short Circuit Ratio

Synchronous Reactance

Synchronous reactance Xd is defined as the ratio of open-circuit voltage for a given field current to the armature short circuit current for the same field current.

Symbol: X_s

Measurement: Electric ResistanceUnit: Ω

Note: Value should be greater than 0.

Formulas to find Synchronous Reactance

Other formulas in Electrical Parameters category

Go Specific Electric Loading

q av = \frac{I a \cdot Z}{π \cdot n || \cdot D a}

Go Specific Electric Loading using Output Coefficient AC

q av = \frac{C o(ac) \cdot 1000}{11 \cdot B av \cdot K w}

Go Winding Factor using Output Coefficient AC

K w = \frac{C o(ac) \cdot 1000}{11 \cdot B av \cdot q av}

Go Output Power of Synchronous Machine

P o = C o(ac) \cdot 1000 \cdot {D a}^{2} \cdot L a \cdot N s

How to Evaluate Short Circuit Ratio?

Short Circuit Ratio evaluator uses Short Circuit Ratio = 1/Synchronous Reactance to evaluate the Short Circuit Ratio, Short circuit ratio or SCR is a measure of the stability of an electromechanical generator. It is the ratio of field current required to produce rated armature voltage at open circuit to the field current required to produce the rated armature current at short circuit. Short Circuit Ratio is denoted by SCR symbol.

How to evaluate Short Circuit Ratio using this online evaluator? To use this online evaluator for Short Circuit Ratio, enter Synchronous Reactance (X_s) and hit the calculate button.

FAQs on Short Circuit Ratio

What is the formula to find Short Circuit Ratio?

The formula of Short Circuit Ratio is expressed as Short Circuit Ratio = 1/Synchronous Reactance. Here is an example- 2.5 = 1/0.4.

How to calculate Short Circuit Ratio?

With Synchronous Reactance (X_s) we can find Short Circuit Ratio using the formula - Short Circuit Ratio = 1/Synchronous Reactance.

Let Others Know

✖

Facebook

Twitter

Copied!

: Value
: Unit