Look up the maximum permitted Zs values (earth loop impedance) as per BS 7671 2018 18th edition, also includes temperature adjusted values.

Select from the list of protective devices (fuse's, MCB's, RCBO's) and device ratings to calculate the maximum permitted Zs value for your selected protective device.

Features:-
+ BS 7671 18th Edition 2018
+ BS EN 60947-2 manufacture devices charts (some)
+ BS EN device's
+ Fuse's
+ MCB's
+ RCBO's
+ RCD's
+ Ze + R1+R2 = Zs calculator
+ 100% values
+ 80% values
+ 0.4 second disconnection times
+ 0.2 second disconnection times
+ 5 second disconnection times

Check out our other electrical apps such as the "Pro Certs" Electrical Testing & Certification App, visit http://www.procertssoftware.com/apps for more info....

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Eligible for Family Library
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Updated
March 9, 2019
Size
7.3M
Installs
500+
Current Version
3.1
Requires Android
4.0 and up
Content Rating
Everyone
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Offered By
Pro Certs Software Ltd
Developer
Milton Keynes MK15 0DU United Kingdom
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