 # R1+R2 Zs Ze Calculator

Verify or calculate R1+R2 and Zs values in an instant

## Description

##### R1+R2 ZS / ZE CALCULATIONS

Calculate the earth loop impedance (Zs) from the R1+R2 and Ze values or calculate the R1+R2 value from the Zs / Ze values.

Calculating R1+R2 is a very simple equation of R1+R2 = Zs - Ze, however if you have many calculations to do that is where the R1+R2 calculator can help to save time.

A handy app for checking & verifying measured R1+R2 values or for calculating a value (Zs, R1+R2) from the other two known values.

*While this app can calculate Ze, Ze values should only be obtained by direct measurement or by inquiry, not calculated. It is best practice to directly measure R1+R2 and Zs values.

- Zs, Ze and R1+R2 calculations with instant results!

## Features

• Calculate R1+R2
• Calculate Zs
• Calculate Ze*

## Saves Time

##### R1+R2 Zs CALCULATIONS

If you have multiple R1+R2 or Zs calculations to complete this app can help by saving time, for example, when calculating R1+R1 enter your Ze and Zs values and calculate, then for the next calculation just update the Zs value and calculate again.

• Quick n Easy
• Saves Time
• Calculate Zs from R1+R2 and Ze
• Calculate R1+R2 from Zs and Ze

Enter any two values to calculate the remaining value.

## Calculate R1+R2

##### R1+R2 FROM Zs

To calculate R1+R2 from Zs enter your measured Zs and measured Ze values, then hit “Calculate”.

Calculating R1+R2 or Zs is a very simple calculation but if you have multiple calculations to do then that’s where this app can speed up the process.

Calculates:

• R1+R2.
• Zs (Earth Loop Impedance).
• Ze (External Earth Loop Impedance) – not recommended to calculate.

Enter any two values to calculate the other!

R1+R2 = Zs – Ze

## Calculate Zs

##### Zs FROM R1+R2

To calculate Zs enter your measured Zs and measured R1+R1 values.

Zs = Ze + R1+R2

#### Max Zs

For maximum Zs values see our Max Zs Values App.

## Calculate Ze

##### Ze CALCULATIONS

Note: Ze should not be calculated, the Ze should only be obtained by direct measurement with the appropriate test equipment and by following the approved procedures.

## FAQ's

#### What is Zs?

Zs is the earth loop impedance of an electrical circuit.

#### What is Ze?

Ze is the earth loop impedance external to the electrical installation.

#### How to Calculate R1+R2

To calculate R1+R2 we can use this formula, Zs – Ze = R1+R2

#### How to Calculate Zs

To calculate Zs we can use this formula, Ze + R1+R2 = Zs

Demo video may show an older version of the app

## Tablets and Phones

##### OPTIMISED FOR MULTIPLE SCREEN SIZES

This R1+R2 Zs Ze Calculator is optimised to work on all screen sizes and resolutions.

Features:

• Easy to use
• Preset R1+R2 Zs formula
• Quick and instant results
• Dedicated support team