Electrical Diagrams

[aiden251181]

talking of drawings, im currently doing an evening class in CAD, and have 2006 at home. Does anybody have the electrical add ins, or a site where i can get them?

schneider website has most symbols and 3d models of components and rs website has a lot of 3d models of components



i also hate the guessing game. if i had a pound for everytime the apprentice used to guess and wasnt shown how to read drawings and work through a problem id be retired now (at 30 years old) I've now got 2 apprentices working in my dept. and have set up a training system for them because nobody seems to care if they can do the job or not. ive startred from the basics of using multimeters and reading drawings progressing through contactors relays and components, to plc's and nc diagnostics with their final project to pick a small machine and retro fit it (either actually doing the job and taking machine out of service for a bit or just drawings and programs and method statement which can be used to do the machine at a later date) my 3rd year apprentice has worked with me for 10 - 12 months and is now confident of going onto minor / medium breakdowns and sorting them himself sometimes with a little help but thats only to be expected. i just think if people have the knowledge and skills then share it with the apprentices / young lads

 

[vaughant]

Hey great to see this threads not all forgotten about.
I've got a nightshift weekend coming up (read hopefully sat on my behind all night) in just over a week so I'll dig some plc drawings out for those who want to learn and see what's what.
Had a cracking fault last night that took a fair bit of searching and incorporated pretty much everything discussed on the last few pages,particularly Tonys suggestion that you need to know the process of something to have half a chance sometimes.
I didn't,got caught out and ended up having to ring out for help,once the process was explained,the fault was found and rectified in about 1/2hr.

I'll dig the diagrams out and give a run through when I get a chance,it's a good one for particularly the less experienced out there.

 

[Besoeker]

@vaughant; this is something I will be covering with our apprentice and you have explained it well.

@sjj84 and RoB2; missing, incomplete, poor drawings is my pet hate. When I do a project I like to trace out what we have, cross-reference with the schematics if we have them then modify to complete. I then like to upgrade the schematics in... wait for it... MSWord... or AutoCAD if I can be bothered! I know for a fact that recent in-house projects in work have been done without the provision of schematics. How can you create a control system with no schematics?

About 9 years ago, because I'd done a course in CAD I was asked to upgrade some schematcs that were over twenty years old with pencilled-in changes/upgrades with supplementary smoke-packet sketches. These are a sample I provided (kept in the original format)...
View attachment 11245View attachment 11246View attachment 11247

Must agree that the German stuff is very organised and keeps you on your toes!

To be good at schemtic reading you do have to put some effort in and practice on different formats.

Well presented drawing if I may say so.

 

[Besoeker]

Just a little addendum to my previous post.

Of major aid and assistance assistance to understanding an electrical diagram is just how logically laid out.
There is a difference between a wiring diagram and a schematic.

 

[DuaneMHunt1976]

You do know the post is 3 and 1/3 years old

 

[Besoeker]

You do know the post is 3 and 1/3 years old

That's OK.

 

[cranedude]

being new to this site...finding it very interesting.

we have an apprentice just now..the first for over 20 years...the age gap between me and him is plus 25 years ..

im very aware that in a few short years he will be thrown into pressure situations..that i take for granted now..

im trying to instill in him a calm approach to faultfinding..heavy on the safety..also aware of my own shortcomings..and it can be a two way conversation.( im always learning everyday )..i often jump ten steps as most faults are repeated over many years..but that doesnt not help him one bit....start at the basics...n work from there..

When carrying out preventative maintenance i throw curveballs at him...identifying certain components..what to expect if this or that happens....and always always the safety side.


i remember as an apprentice my trainers sticking ( safely) bits of sellotape in certain obsure places....causing control ccts to act strange or incorrect.....and myself having to figure out the simulated fault...need to go back to this when i get a chance.

of course my fellow apprentices looked for bits of tape and threw the meter away....u dont get sellotape on real faults however