Max Zs Values - Reviews, Revenue and Downloads - Apple App Store

Description

Calculate and look up the maximum permitted Zs value ( earth loop impedance ) to BS 7671. Max Zs Values also includes the 80% temperature adjusted values and a some MCCB 60947-2 manufacture Zs charts.

- 100% BS 7671 Zs Values
- 80% On Site Guide Zs Values
- Printable 60947-2 MCCB Zs Tables

- 0.4 (s) second disconnection times
- 0.2 (s) second disconnection times
- 5 (s) second disconnection times

> Common BS EN Devices:
Scroll through the list of protective devices and select the device rating to calculate the maximum permitted Zs value for your selected protective device and rating combination.

> 60947-2 MCCB's Zs Tables:
Look up the maximum permitted Zs tables for a selection of MCCB manufacture devices (some).

Maximum Zs Features:
+ Maximum Disconnection Times
+ BS 7671 18th Edition Zs Tables
+ Fuse's
+ MCB's
+ RCBO's
+ RCD's in TT earthing systems
+ Max REC Ze values
+ 100% values
+ 80% values
+ 0.4 second disconnection times
+ 0.2 second disconnection times
+ 5 second disconnection times
+ Uo 55v (U 110v) single phase and Uo 63.5v (three
phase) Zs values
+ BS EN 60947-2 MCCB manufacture device charts
(some)

There is now a new "Zs Converter" to convert old Zs values to the new 18th edition 230v Cmin Zs values.

A maximum Zs calculator for iPhone and iPad.

Check out our collection of electrical apps such as the "Pro Certs" Electrical Certification App for iPad.

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Screenshots

User Rating

4.2 out of 5

20 ratings in United Kingdom

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Ratings History

Reviews

Unhappy long standing customer

Really unhappy that I have purchased this app previously at nearly £10 - had it for years, used it often. Purchased a new phone and I’ve had to repurchase it. Even though I’ve used the same email address to repurchase. I feel like that is unfair.

Rip off

Really poor app

Essential for commissioning.

I have had this app for a few years and the update is amazing!!!! Everything is always up to date, easy to use l. has many variety of MCB, fuses and MCCBs values available. Well done to whoever made it.

Insightful

No, not Mccb’s but type 4 3871. Seeing that you had the Mccb’s gave me hope for the 3871’s Other than that it’s a great app. Bad mood, sorry for the gut reaction.

Cert Time Saver

Brilliant app. Saves valuable time when fillling out certs especially for MCCB max zs. Awesome.

Give it a go

I couldn’t find a Zs reading for a breaker so I brought this app and I’m very impressed by it. Will be very handy on site for doing periodic’s

Review

Excellent app and easy to use

Excellent

I downloaded this app last year and it was great very handy, There was an issue with the software but the developers was extremely helpful and went out of their way to fix this issue, I’ve recently downloaded the updated version and can honestly say it’s gold excellent stuff

Great app but...

Love this app very handy when needing to remember figures,values etc. However since iOS 14 sadly does no longer display correctly on my iPhone xs which deems some of the functions unusable atm - hopefully a fix for this is in the pipeline?.

Electrician

Constantly improving and adding more information to the app

Store Rankings

Ranking History

App Ranking History not available yet

Category Rankings

Chart	Category	Rank
Top Paid	United Kingdom Reference	4
Top Grossing	United Kingdom Reference	88
Top Paid	United Kingdom	142
Top Paid	Ireland Reference	174
Top Paid	Dominican Republic Reference	340

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