RELAYS 101 at App Store analyse

App power index: 100 (based on ranks around App Stores today)
Utilities Education
Developer: Merle Ashton
Price: 0 free
Current version: 4.2, last update: 4 years ago
First release : 09 Dec 2013
App size: 4.71 Mb
4.4 ( 1824 ratings )
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Estimation application downloads and cost

> 2.2k
Monthly downloads
~ $ 900
Estimation App Cost


Protective relay technician calculator for Symmetrical Components, Apparent Impedance, Phase-Phase calculations, Polar-to-Rectangular conversions and more. The iPad version goes well beyond the iPhone version in that the larger screen allows for more details. Use the iPad version for training and the iPhone version for your toolbox.
The "In-Depth" pages in the iPad version take you step by step through many calculations like your Symmetrical Components calculations, Phase-Phase calculations, k0 calc, Phase-Ground Relay Test set-up calcs, Phase-Phase Relay Test set-up calcs and 3-Phase Relay Test set-up calcs.
The "Relays By The Numbers" pages include ten pages of simple relay test simulations including 21, 27, 40, 46, 47, 50, 59, 67, 81, 87T and 87B simulations.
This is a relay tech calculation tool and a relay tech training tool.
Ver.4.2 also brings us up to date with Apple required iOS updates.
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Available in countries
Country Price
Canada 3.99 CAD
China 18 CNY
France 3.49 EUR
Germany 3.49 EUR
Italy 3.49 EUR
Netherlands 3.49 EUR
Portugal 3.49 EUR
Spain 3.49 EUR
Poland 7.99 EUR
UK 2.99 GBP
India 249 INR
Japan 370 JPY
Korea, Republic Of 999.99 KRW
Poland 13.99 PLN
Russia 229 RUB
Turkey 19.99 TRY
USA 2.99 USD
Korea, Republic Of 7.69 USD
Ukraine 2.99 USD
Available for devices
iPad2Wifi, iPad23G, iPadThirdGen, iPadThirdGen4G, iPadFourthGen, iPadFourthGen4G, iPadMini, iPadMini4G, iPadAir, iPadAirCellular, iPadMiniRetina, iPadMiniRetinaCellular, iPadAir2, iPadAir2Cellular, iPadMini3, iPadMini3Cellular, iPadMini4, iPadMini4Cellular, iPadPro, iPadProCellular, iPadPro97, iPadPro97Cellular, iPad611, iPad612, iPad71, iPad72, iPad73, iPad74,