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Single phase reverse electrical genious required

Reversing Single phase switch attatched to motor

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Martin Newbold21/02/2017 20:58:09
339 forum posts
159 photos

I have read in regard the letters W V U the following however its seems a bit greek

for start connection join ( X,Y.Z ) and connect U(phase 1),V(phase2),W(phase3) and Delta Join(U,Z) phase 1,join(V,X)phase 2,join(W,Y) phase 3

normative DIN (GERMAN ) use the first letter U mean (oder)V, W (ELCTRICAL MACHINERY) AND (R) (S) (T) FOR electrical terminals phases 120° degree R is not Run , S is not Start , T is not Time

I presume this is for Three phase so not applicable

Toby21/02/2017 22:16:03
113 forum posts
17 photos
Posted by Martin Newbold on 21/02/2017 20:58:09:

I have read in regard the letters W V U the following however its seems a bit greek

 

normative DIN (GERMAN ) use the first letter U mean (oder)V, W (ELCTRICAL MACHINERY) AND (R) (S) (T) FOR electrical terminals phases 120° degree R is not Run , S is not Start , T is not Time

<p style="margin: 0px 0px 1em; padding: 0px; border: 0px; font-size: 15px; clear: both; color: rgb(36, 39, 41); font-family: Verdana, " bitstream="" vera="" sans",="" "dejavu="" tahoma,="" geneva,="" arial,="" sans-serif;="" background-color:="" rgb(255,="" 255,="" 255);"="">I presume this is for Three phase so not applicable

Correct, this is for 3 phase and nothing to do with reversing them.

If you are after reversing a single phase induction motor this link might help you.......

**LINK**

 

EDIT: Somehow I missed the fact this was the end of a long thread on the subject so apologies if what I have said is not relevant.......

Edited By Toby on 21/02/2017 22:18:02

Edited By Toby on 21/02/2017 22:18:20

Ady122/02/2017 10:52:06
avatar
2858 forum posts
368 photos

Reversing a simple single phase motor should be a quick swap at the motor box, it will only go in one direction but there are no complicated three way switch issues

AEI thread

I basically swapped the two "into the motor unknown" fellas over

 

Edited By Ady1 on 22/02/2017 10:56:39

Martin Newbold23/02/2017 12:22:35
339 forum posts
159 photos

Toby what a brilliant link https://woodgears.ca/motors/reversing.html. I thought this was really interesting thank you for providing it I feel i might be able to draw a diagram now

Adi that is really interesting I need to get my head round these motor start capacitors as they are a lot smaller now as the components are more discreet. I presume there was only one type now I see there are many. I have located a new aluminum box and some other parts but have to get back to order them.

Martin Newbold23/02/2017 18:50:28
339 forum posts
159 photos

Do you think this could be replaced with this or are they different please

capacitors details

**LINK**

Start and Run Motor Capacitor Generator 450v most UF ratings 20 25 40 50 60 80

UNIVERSAL CAPACITORS SUITABLE FOR MOST APPLIANCES

450VAC 50/60 Hz

HIGH QUALITY REPLACEMENT PART WITH 4 TAB TERMINALS

CAN BE USED TO REPLACE CAPACITORS WITH 2 TABS, SIMPLY CONNECT ONE SPADE TO EACH SIDE

WE OFFER ONE OF THE MOST COMPREHENSIVE RANGES OF CAPACITORS ON EBAY WITH THE FOLLOWING AVAILABLE IN OUR EBAY SHOP

1.5UF, 2.5UF, 3UF, 3.5UF, 4UF, 4.5UF, 5UF, 6UF, 6.3UF, 7UF, 7.5UF, 8UF, 9UF, 10UF, 11UF, 12.5UF, 14UF, 15UF, 16UF, 18UF, 20UF, 22UF, 25UF, 30UF, 31.5UF, 35UF, 40UF, 45UF, 50UF, 60UF, 70UF AND 80UF

Neil Wyatt24/02/2017 16:26:18
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Moderator
10959 forum posts
502 photos
61 articles

A 25uF 450V AC capacitor is a suitable replacement for a 25uF 430V AC one, especially as they are both designed for use as motor starting capacitors.

Neil

Martin Newbold25/02/2017 18:25:38
339 forum posts
159 photos

Thanks Neil I need to get things smaller on my motor since installing gearbox so wanted a smaller cap .. If I have a rotary switch do I connect this capacitor at motor end or at rotary reverse controller please.

 

Martin

Edited By Martin Newbold on 25/02/2017 18:26:14

Martin Newbold20/04/2017 20:08:10
339 forum posts
159 photos

hi i wanted to know does the cap fit around the motor coil or in series with it please like my dewhurst switch diagram shows?

I presume it should be in series?

Martin

John Rudd20/04/2017 21:37:41
920 forum posts
53 photos

Starting capacitors are in series with the start winding otherwise it wont work.....followed by a release of smoke as the windings melt....

Martin Newbold20/04/2017 21:49:47
339 forum posts
159 photos

This is my first try at rewiring the remote switch. I have wired the capacitor in series . Am awaiting my cable gland unions to try it with the cable and switch wired up hope it looks ok

electrical diagram for drummond

Martin Newbold21/04/2017 10:31:28
339 forum posts
159 photos

Have made connection to connector in box on motor. Am still awating cable glands and have to build a capacitor mount.

new box mounted blocks wired up

Brian Oldford21/04/2017 11:30:48
avatar
387 forum posts
4 photos
Posted by Martin Newbold on 20/04/2017 21:49:47:

This is my first try at rewiring the remote switch. I have wired the capacitor in series . Am awaiting my cable gland unions to try it with the cable and switch wired up hope it looks ok

electrical diagram for drummond

404 error

Martin Newbold23/04/2017 09:56:11
339 forum posts
159 photos

Hi Brian yes something went wrong with upload here is my first disgram again:

new electrics layout for remote drummond switch

Martin Newbold23/04/2017 11:48:58
339 forum posts
159 photos

I have mounted up the new electric equiped kitty motor onto the lathe to check it all fits . I have left wnough cable to aloow me to site the switch anywhere . However probably think it will go on front .

latest  lathe electrics

Martin Newbold25/04/2017 13:32:42
339 forum posts
159 photos

I Made up a bracket and bolted on switchmade up late and bolted on switch

Martin Newbold26/04/2017 11:54:32
339 forum posts
159 photos

My first go at wiring this tripped the consumer unit. I am not sure why. Can anyone confirm my wiring diagrams are correct? I have live on 1 and 3 connected to neutral.

Thanks Martin

Martin Newbold26/04/2017 13:54:18
339 forum posts
159 photos

This is what I sketched from old switch

Kitty motor old switch wiring

Martin Newbold26/04/2017 13:56:04
339 forum posts
159 photos

cany anyone who is an electrical genius help please?

Martin Newbold26/04/2017 15:27:28
339 forum posts
159 photos

Having sorted out the earthing problem. I have one direction travel on the forward control but no reverse this turns of motor when leaver is in reverse. I presume this is another wiring issue as it was a reversable motor on old switch , one of electrical  people here solved that for me.

Am hoping they can again

M

 

Edited By Martin Newbold on 26/04/2017 15:29:39

Les Jones 126/04/2017 17:29:43
1917 forum posts
128 photos

Hi Martin,
I have jusr re read the thread from the start but I am still not sure what you are asking. I don't know how you have the motor wired at the moment so I can't say what is wrong. Can you post a FULL diagram of how you have it connected at the moment so I can try to work out the mistake you have made. When John Rudd asked you to identify the main winding connections, the start winding connections and the centrifugal switch connections did you do so ?

Les.

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