Max Zs Values
By Pro Certs Software Ltd
Open iTunes to buy and download apps.
Calculate maximum permitted Zs values (earth loop impedance) as per BS7671, also includes temperature adjusted values.
Using the picker wheel select the protective device (fuse's, MCB's, RCBO's) and device rating to calculate the maximum permitted Zs value for your selected device.
+ BS7671 Amendment 3 2015 values
+ BS EN device's
+ Ze + R1+R2 = Zs
+ 100% values
+ 80% values
+ 0.4 second disconnection times
+ 0.2 second disconnection times
+ 5 second disconnection times
Search for 'Pro Certs Software' in the app store for our other electrical apps designed for the electrical industry aimed at electricians and electrical engineers.
Follow us on twitter (ProCerts) or facebook (Electrical Apps by Pro Certs Software) to keep up to date with our latest app developments, news and special offers.
What's New in Version 2.1
V 2.0 - 27/09/2015: Updated Zs values for BS 7671 amendment 3 2015.
V 2.1 - 28/09/2015: Fixed share bug.
- NIS 7.90
- Category: Reference
- Updated: 01 October 2015
- Version: 2.1
- Size: 10.5 MB
- Language: English
- Developer: Pro Certs Software Ltd
- © 2012 Pro Certs Software Ltd
Compatibility: Requires iOS 6.0 or later. Compatible with iPhone, iPad, and iPod touch.