---
title: "Lineman's Reference - XFMR LAB - Bewertungen, Einnahmen und Downloads in Vereinigte Staaten | Apple App Store"
description: "This app is a fully functional transformer lab simulator that was designed and developed by a journeyman lineman, for lineman and apprentices. You can use this app to study and learn your transformer "
---

# Lineman's Reference - XFMR LAB — Vereinigte Staaten
> Interactive Transformer Lab

![Lineman's Reference App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/5f/e3/24/5fe32496-e6ff-6d82-08b6-889dc6de3500/AppIcon-0-0-1x_U007emarketing-0-7-0-0-85-220.png/434x0w.png)

**Developer:** [Digital Apprentice](https://apptail.io/de/developer/digital-apprentice-MQGc)
**Category:** Education
**Rating:** 4.2/5 (127 ratings)
**Price:** Free
**Bundle ID:** digitalapprentice.xfmr
**Store:** Apple App Store
**Country:** Vereinigte Staaten
**Version:** 1.3.02 (released 2025-02-10)
**Original Release:** 2021-09-12
**Languages:** English

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id1583878194)
**AppTail Page:** [https://apptail.io/de/app/linemans-reference-xfmr-lab-ulec/united-states](https://apptail.io/de/app/linemans-reference-xfmr-lab-ulec/united-states)

## Lineman's Reference Description
This app is a fully functional transformer lab simulator that was designed and developed by a journeyman lineman, for lineman and apprentices. You can use this app to study and learn your transformer connections. 
When the fuses are closed in you can test your connections with a volt meter, ohm meter, and a rotation meter. Abnormal voltages and cutout fuses exploding can occur when improper connections are made. In the labs you can also inspect the transformers' nameplates and secondary coils. 
Quick reference diagrams, basic transformer informational reading material and more are available in this application.
The Quiz mode lets you test your knowledge.
The Company Customized Experience is a way for your Power Company to work with us where we will modify the app to match their spec. Tell them to reach out to us if they are interested!

Current Labs in this app:
-Single Phase-
Single Bushing Topside
Dual Bushing Topside

-Three Phase-
Delta Delta Closed
Delta Wye Closed
Wye Delta Closed
Wye Wye Closed
Delta Delta Open
Wye Delta Open

-Misc-
Paralleling
4th Cutout
Troubleshooting
Tutorial

-Advanced-
Straight 480
240/480
277/480
Corner Grounded 240 or 480
Wye Wye 5 Wire (120/240 & 120/208)

-Quiz-
Test your transformer wiring knowledge by completing a predetermined assortment of labs at random. Blowing fuses and attempting to Check Work subtract from your overall score out of 100.

-Advanced Quiz-
Test your overall transformer knowledge by completing a series of random quizzes where you receive basic job-site information and have to choose the correct transformer nameplate and secondary coil configuration. You will then have the option to wire up the corresponding bank.

## Lineman's Reference Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource126/v4/e7/03/ab/e703abf3-6be2-f517-3884-4505845f8d63/dfe9e5a8-f2b7-4bd1-8eff-69f8cb78ebf7_1.png/2688x1242.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource116/v4/bc/3e/7c/bc3e7c8e-3f3e-543b-b659-39192a475269/069ac081-7346-4138-a405-b413810bb7da_2.png/2688x1242.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource116/v4/aa/c6/a9/aac6a966-59a0-0189-deff-758e8c9dbc09/9c669089-26c4-4077-90ee-a1ddcda8b8d1_3.png/2688x1242.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource126/v4/19/f2/2b/19f22b00-2526-b920-7acf-bd6d9b5a10d7/23305676-4cef-405d-a49f-6cce95f6f5f9_4.png/2688x1242.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource126/v4/53/27/5f/53275f18-3601-02fd-f0a2-0c0d9166df1f/65a7ebef-b80b-4999-8f28-da964fe7933b_5.png/2688x1242.png)
- [Screenshot 6](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource116/v4/15/8a/30/158a308b-5367-3a95-c1a8-a9176d07bab1/409ca831-c605-4132-82fb-0f1cf1cab69a_6.png/2688x1242.png)
- [Screenshot 7](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource126/v4/cc/8d/d0/cc8dd00b-995f-7615-3587-869e9eb938f5/226eccd4-e803-497c-ab1c-2846927cde3e_7.png/2688x1242.png)
- [Screenshot 8](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource116/v4/70/1e/4e/701e4e5a-a3b9-d1ac-80ec-d1e4e18c232c/92360ace-82a3-459f-b62e-2cf48140d136_8.png/2688x1242.png)
- [Screenshot 9](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource126/v4/82/68/e1/8268e11b-4477-c178-6342-33dd60e5f87b/1abb8ae4-0d12-4ca1-b167-2977e0fab174_9.png/2688x1242.png)
- [Screenshot 10](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource116/v4/84/a0/e6/84a0e6bd-fae4-5f63-c6e0-1e7d738d24cc/f69b537d-0cc3-4832-b02a-7bc62504d866_10.png/2688x1242.png)

## Lineman's Reference Rating Breakdown in Vereinigte Staaten
- 5 stars: 73 (57%)
- 4 stars: 26 (20%)
- 3 stars: 12 (9%)
- 2 stars: 6 (5%)
- 1 stars: 10 (8%)

## Lineman's Reference Reviews in Vereinigte Staaten

### ***** "Great training reference!"
This is a great app, let me just start with that.
It would be great if you could build your own banks and check voltage and what not. The set diagrams are awesome but being able to play around with different connections would make it better. Also tap changer settings and info would also be a great addition.
-- Climbinsticks, 2024-08-29

### *---- "Basically just use it as a normal diagram"
If you thought you’d be able to run a lot of different scenarios with this don’t bother. The app won’t let you do a ton of stuff and if you’re trying to use it to show an apprentice or something their mistake and recreate it digitally it almost certainly won’t accurately recreate that. Basically you build it correct or it doesn’t much do anything, not much point of this unless you really just want an interactive diagram because you can’t follow one that doesn’t have movable parts—which makes zero sense to me.
-- ephixius, 2024-08-25

### ***** "Awesome app"
Awesome app helped me get my secondary connections down but it would be even better you guys added a create your own bank option just so guys can get a better grasp. Also be helpful if you could add a wye bank that stays in series. Hope to see more options in the future.
-- KDM117!!, 2024-08-06

### ****- "Good app kinda confused"
How do you connect the h2 to the neutral everytime I tie them in I can get them to turn white but they come in upside down. How do I make them look like the picture ? I’m sure there is a way to do it but I’ve been messing with this app a few days and have yet to figure it out
-- jayb9583726, 2024-03-06

### ****- "Almost perfect"
I’m using this app to practice my connections for my transformer class and it’s really really great well worth the 10$ but when I wire up a bank correctly it will tell me it’s wrong it only does this with the delta delta or the wye wye I will match them up perfectly with the image but still say it’s wrong I’ve even asked my teacher if they are wired correctly and he said yes. Once that gets fixed this app will be 5/5
-- Maxellis234, 2024-02-14

### ***-- "Okay app"
What I did not like is you can’t get a zero read on like phases it gives a 240 read when it is really a zero read this was wye delta bank straight 240
-- fckatomicwallet, 2023-12-31

### ***-- "Timmy"
Some of the answers in the advance quiz need to be fixed for the transformer selection question parts of the test. Selecting the correct transformer subtracts two points while selecting the improper voltage per nameplate is shown as correct. Please fix this as it could be confusing to anyone trying to learn.
-- TimmyJA, 2023-10-31

### ***-- "Fuse blows when nothings wrong"
When making a delta secondary hookup, when you attach the case grounds, the fuse blows and says it’s wrong. Not sure if it’s a bug or I’m im doing something wrong
-- Case grounds, 2023-07-02

### ***** "Great for linemen"
Great app. Highly recommend for any apprentices or journeymen looking to brush up on their banking skills. Would love to see paralleling 3 phase banks in the future. I’ve had the app for a while and have noticed new features come up, like single phase paralleling and troubleshooting.
-- Silverx87, 2023-04-02

### **--- "Wrong wiring in diagram"
The diagram for a 277/480 Wye/Wye bank is wrong. Also the H.V. on the transformer name plate on dual bushing transformer is wrong.
-- mdurden33, 2023-01-29

### *---- "Shows wrong connection with right hook up"
I’ll make a connection and check work, shows right voltage but wrong connection. Check the system’s connection and it’s exactly the same. Refresh connection and it will show it as correct. Downloaded this for my apprentices but I can’t use this app and worry about confusion or frustration. Good theory, too many bugs…
-- tbaker575, 2023-01-27

### ****- "Paralleling"
Great app for guys to start understanding banks! Only issue is when paralleling cans. Rather than running the x3 and x1 to the same phase it wants you to run to opposite phases. That isn’t parallel, that’s a 240 secondary flash.
-- Triwaytitan, 2023-01-15

### ***-- "Voltmeter doesn’t work and needs more labs!"
Cool app, but the voltmeter doesn’t work! It will not let you drop the leads to the voltmeter on the bottom two phases… this prevents you from doing the tests because in the test it tells you to check secondary voltage with the meter…

Also needs more labs! It’d be great if there were just more labs with different scenarios, or a feature like “customer needs 480 3 phase power for x load, pick the right transformer and hook up” type situations.
-- Fulololol, 2022-12-11

### ***** "Overall great app!"
I have no complaints about this app.. it has definitely helped me learn about constructing banks and it has put me buses ahead of other apprentices in my area. **One thing I do wish to see in the app is the Delta & Wye vector charts for both primary and secondary.** this would help greatly when learning how to build banks.
-- Djudd260, 2022-05-03

### *---- "Dissatisfied"
I am very disappointed. There’s no option to select the transformers you want, no way to select primary voltage, no 277/480, no addictive/subtractive options. There’s a difference in knowing how to bank and knowing how to hook up a bank when told wye or delta.
-- Lineman6969, 2022-04-07

### ***-- "Okay"
Not to bad of an app. Wish you could pick what you want on the secondary side and primary side. Voltages, etc..
-- Taiter1992, 2022-04-01

### ***** "Awesome!!!!"
Been a lineman for a few years and have always struggled understanding banks but this has made it easy and fun to memorize everything about bank building! Be your brothers keeper and share this app with them
-- coreym1209, 2022-03-13

### ***-- "Love the app but…"
Definitely some issues. I’ll wire up a bank correctly and it’ll tell me it’s wrong. I can delete my secondary’s and reconnect them exactly the same way and close the fuses again and it’ll say it’s right. Also, I’ll wire up a wye delta (for example) and it’ll say “this is a correct way to wire a delta delta bank” when obviously it should say wye delta. Lastly the app needs to be run with a horizontal screen but you can’t put the volt meter on the c phase secondary leads because of the layout. Still worth the $10 with the few issues it has
-- mmikemmike, 2022-03-07

### ***-- "Different voltages"
I like the way this app is setup. Is there a way, maybe I’m not seeing it, to create a 277/480 and a straight 480 bank. To be able to get into the secondary windings and parallel them together manually?
-- Family man 12345678, 2022-02-07

### ****- "Good learning/practice tool"
Good learning/practice tool! Could use some minor adjustments such as easier access to lines(too close to bottom of screen), a way to look back at the bank you are building during a quiz (without restarting) and the addition of power banks. Overall good app though
-- nolanhiestand, 2022-02-04

[View all Lineman's Reference reviews and detailed analytics on AppTail](https://apptail.io/de/account/signup?utm_campaign=ai-crawl&utm_content=reviews)


## Lineman's Reference Store Rankings
| Chart | Country | Category | Rank |
|-------|---------|----------|------|
| Top Bezahlt | Vereinigte Staaten | Education | #14 |
| Top Bezahlt | Vereinigte Staaten | Overall | #132 |

## Lineman's Reference Discovered Keywords
- lineman guide
- xfmr lab
- line man

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## Lineman's Reference Available In
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---

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