Max Zs Values
By Pro Certs Software Ltd
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Not compatible with ios8. - 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 1 2011 values
+ BS EN device's
+ 100% values
+ 80% values
+ 0.4 second disconnection times
+ 0.2 second disconnection times
+ 5 second disconnection times
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What's New in Version 1.5
Database update of values
- NIS 10.90
- Category: Reference
- Updated: 31 October 2012
- Version: 1.5
- Size: 3.6 MB
- Language: English
- Developer: Pro Certs Software Ltd
- © 2011 Pro Certs Software Ltd
Compatibility: Requires iOS 4.3 or later. Compatible with iPhone, iPad, and iPod touch. This app is optimised for iPhone 5.