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Zs calculates the maximum Zs for MCB B, MCB C and MCB D Type Circuit Breakers

Zs

by Chris Hill
iPhone
FREE in the App Store

What is it about?

Zs calculates the maximum Zs for MCB B, MCB C and MCB D Type Circuit Breakers

App Details

Version
1.1
Rating
NA
Size
4Mb
Genre
Education Reference
Last updated
February 17, 2022
Release date
February 17, 2022
More info

App Store Description

Zs calculates the maximum Zs for MCB B, MCB C and MCB D Type Circuit Breakers

For fault protection, the limiting values of earth fault loop impedances, Zs are given in BS 7671.

This app is perfect for helping you with commissioning, reviewing test sheets, witnessing electrical testing and even with cable design!

Earth fault loop impedance (Zs) is the impedance in ohms of the circuit path formed during a fault between earthed metal work and live parts. It includes the external impedance circuit (Ze) and the resistance of the phase and circuit protective conductors (R1 + R2).

Get it for FREE in the App Store
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