Version history
Max Zs Values
43
ASO score
Text
57/100
Reviews
0/100
Graphic
60/100
Other
0/100
App Rating
3.4
Votes
22
App Age
13y 10m
Last Update
Jul 29, 2025
Compare with Category Top Apps
|
Metrics
|
Current App
|
Category Top Average
|
Difference
|
|---|---|---|---|
|
Rating
|
4.6
|
4.68
|
-2%
|
|
Number of Ratings (Voted)
|
21
|
3.2M
|
-100%
|
|
App Age
|
13y 10m
|
7y 8m
|
+80%
|
|
Price
|
$9
|
$0
|
|
|
In-app Purchases Price
|
$0
|
$67
|
|
|
Update Frequency
|
136d
|
28d
|
+384%
|
|
Title Length
|
13
|
23
|
-43%
|
|
Subtitle Length
|
30
|
28
|
+7%
|
|
Description Length
|
1 403
|
3 048
|
-54%
|
|
Number of Screenshots
|
894
|
1339
|
-33
%
|
|
Size
|
15MB
|
276MB
|
-95
%
|
Category Ranking in United States
7 days
Last 7 days
Last 30 days
Last 90 days
Last 180 days
Last year
| Top | Dec 05, 2025 | Dec 12, 2025 |
|---|---|---|
|
No results were found!
|
||
| Top | Dec 05, 2025 | Dec 12, 2025 |
|---|---|---|
|
No results were found!
|
||
| Top | Dec 05, 2025 | Dec 12, 2025 |
|---|---|---|
|
No results were found!
|
||
| Top | Dec 05, 2025 | Dec 12, 2025 |
|---|---|---|
|
No results were found!
|
||
Ranking Keywords in United States
| Keywords | App Rank |
|---|
Analyze this and other apps using Asolytics tools
Text ASO
Title
(
Characters:
13
of 30
)
Max Zs Values
Subtitle
(
Characters:
30
of 30
)
Zs Values 18th Edition BS 7671
Description
(
Characters:
1403
of 4000
)
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.}
Read more
Other
Additional Information
| Rating: | |
| Voted: | 22 |
| App Store Link: | |
| Price: | 8.99 $ |
| Website: | |
| Email: | - |
| Privacy Policy: | |
| Categories: | Productivity, Reference |
| Size: | 15MB |
| App Age: | 13 years 10 months |
| Release Date: | Feb 11, 2012 |
| Last Update: | Jul 29, 2025 |
| Version: | 3.1.18 |
Version history
3.1.18
Jul 29, 2025
29/07/2025 v3.1.18
- UI improvements.
- In-app optimisations.
3.1.16
Feb 09, 2024
- Added Schneider TeSys MCCB max Zs table.
- New PDF viewer to fix the pinch/zoom/scroll bug when viewing PDF tables.
- A few UI improvements.