hi
I am after some help with wiring & contactor info for my Harrison m300
As seen in previous posts mine came with a single phase motor with a 24v DC electro magnetic clutch activated via the apron lever so it had to have a separate toggle switch mounted elsewhere to reverse the motor direction
I am going to see how I get on removing the 24v DC magnetic clutch completely and running the single phase motor exactly as original with no clutch and using the apron lever up to start motor backwards and lever down to start motor forwards on the standard micro switches swapping the motor direction via contactors all how it is on the original 3 phase set up
I have the 3 phase original motor but it can not be wired for 240v 3 phase so i would need a rotary phase converter or digital 240v in 415v out inverter to use it so for now i want to re wire with the single phase with no clutch and see how the motor likes it with the start and stopping loads, i dont usually turn anything big on the lathe anyway
Anyway......
Here is a few photos of all my current components and wiring diagrams I have
This says 380v so would i need to replace this as i am only 240v? if so is this just a normal breaker i could also get from screwfix? what amperage would i need?
This is the current no volt relay but doesnt look like the standard one and what other people have fitted so does anybody have a link to what i need that could be bought from an electrical supplier ?
current contactors
Brook Crompton motor wiring diagram
A couple of things I need to know
My set up currently uses the 11 pin contactors shown above but these look nothing like what other people have fitted also the "no volt relay" looks different to other peoples as well
I'm not sure if these work like standard contactors and can be used or if they are a different type due to the AC/DC mixed components i had previously fitted for the clutch set up etc
I don't understand the pin out diagram whereas with normal contactors like the ones below its just live and neutral in for switching then line in one side and line out the other side
(for 240v would it be L1 live and L2 neutral or would you use the earth as well for L3?)
Is it easier to just go and buy the standard contact style like these from screwfix
http://www.screwfix.com/p/hylec-dec-3-pole-contactor-unit-7-5kw/3195G?kpid=3195G&cm_mmc=Google-_-Product Listing Ads-_-Sales Tracking-_-sales tracking url&gclid=CJiWo5OChdECFecV0wod2D4CHw#product_additional_details_container
From what i see they are needed to be able to swap the Z & T wires on the motor to reverse the direction and activated via the low voltage 110v FWD/REV micro switches
With the single phase being only 1.5hp and the 3 phase being 3hp would the 25amp be ok for use with both?
Also my lathe wiring did not have a thermal overload relay at all! So if I get the screwfix contactors they also do this thermal overload relay but I have no idea what amp range to get as there is various options
http://www.screwfix.com/p/hylec-deth-thermal-overload-relay-6-8a-trip/9518g
Here are the Brook Crompton single phase motor details
Lastly is the original isolator ok to work with single phase supply? Pictures of that added as well
Sorry for the vast amount of questions, i have asked about people i know locally for help with this but can not find anybody to help and any big electrical engineering firms are too busy to mess about with this sort of thing it seems
Thanks
Marc
I am after some help with wiring & contactor info for my Harrison m300
As seen in previous posts mine came with a single phase motor with a 24v DC electro magnetic clutch activated via the apron lever so it had to have a separate toggle switch mounted elsewhere to reverse the motor direction
I am going to see how I get on removing the 24v DC magnetic clutch completely and running the single phase motor exactly as original with no clutch and using the apron lever up to start motor backwards and lever down to start motor forwards on the standard micro switches swapping the motor direction via contactors all how it is on the original 3 phase set up
I have the 3 phase original motor but it can not be wired for 240v 3 phase so i would need a rotary phase converter or digital 240v in 415v out inverter to use it so for now i want to re wire with the single phase with no clutch and see how the motor likes it with the start and stopping loads, i dont usually turn anything big on the lathe anyway
Anyway......
Here is a few photos of all my current components and wiring diagrams I have
This says 380v so would i need to replace this as i am only 240v? if so is this just a normal breaker i could also get from screwfix? what amperage would i need?
This is the current no volt relay but doesnt look like the standard one and what other people have fitted so does anybody have a link to what i need that could be bought from an electrical supplier ?
current contactors
Brook Crompton motor wiring diagram
A couple of things I need to know
My set up currently uses the 11 pin contactors shown above but these look nothing like what other people have fitted also the "no volt relay" looks different to other peoples as well
I'm not sure if these work like standard contactors and can be used or if they are a different type due to the AC/DC mixed components i had previously fitted for the clutch set up etc
I don't understand the pin out diagram whereas with normal contactors like the ones below its just live and neutral in for switching then line in one side and line out the other side
(for 240v would it be L1 live and L2 neutral or would you use the earth as well for L3?)
Is it easier to just go and buy the standard contact style like these from screwfix
http://www.screwfix.com/p/hylec-dec-3-pole-contactor-unit-7-5kw/3195G?kpid=3195G&cm_mmc=Google-_-Product Listing Ads-_-Sales Tracking-_-sales tracking url&gclid=CJiWo5OChdECFecV0wod2D4CHw#product_additional_details_container
From what i see they are needed to be able to swap the Z & T wires on the motor to reverse the direction and activated via the low voltage 110v FWD/REV micro switches
With the single phase being only 1.5hp and the 3 phase being 3hp would the 25amp be ok for use with both?
Also my lathe wiring did not have a thermal overload relay at all! So if I get the screwfix contactors they also do this thermal overload relay but I have no idea what amp range to get as there is various options
http://www.screwfix.com/p/hylec-deth-thermal-overload-relay-6-8a-trip/9518g
Here are the Brook Crompton single phase motor details
Lastly is the original isolator ok to work with single phase supply? Pictures of that added as well
Sorry for the vast amount of questions, i have asked about people i know locally for help with this but can not find anybody to help and any big electrical engineering firms are too busy to mess about with this sort of thing it seems
Thanks
Marc
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