Is this a single phase welder ? | on ElectriciansForums
Guest viewing is limited

Is this a single phase welder ?

Post new thread

Discuss Is this a single phase welder ? in the UK Electrical Forum area at ElectriciansForums.net

JD6400

JD6400

-
Mentor
Arms
Joined
Feb 6, 2011
Messages
1,954
Reaction score
742
Location
?
Hopefully the picture's have uploaded otherwise this thread will be a bit pointless !

I got called to this old oil set last week as it keeps blowing its 32 fuses , it was a replacement for an old oxford 2 phase one that had given up the ghost .
Being a farmer install it had been wired like for like , but I have a feeling this one is only capable of single phase connection .
Although I have not come across any other oil sets that have not been capable of being connected in either single or twin phase it has come from a rocket reasearch facility , and I seem to remember being told that the old oil welders in shipyards had to be single phase for some reason , so this might be the case here ?
Can anyone else make out what the connection should be from the uploaded face plate pictures .
Many thanks Dave
 

Attachments

  • [ElectriciansForums.net] Is this a single phase welder ?
    P_20151021_144405.jpg
    217.9 KB · Views: 95
  • [ElectriciansForums.net] Is this a single phase welder ?
    P_20151021_144453.jpg
    174.1 KB · Views: 82
  • [ElectriciansForums.net] Is this a single phase welder ?
    P_20151021_144702.jpg
    592.7 KB · Views: 82
  • [ElectriciansForums.net] Is this a single phase welder ?
    P_20151021_144645.jpg
    596.9 KB · Views: 81
  • [ElectriciansForums.net] Is this a single phase welder ?
    P_20151021_144634.jpg
    603.4 KB · Views: 84
  • [ElectriciansForums.net] Is this a single phase welder ?
    P_20151021_144433.jpg
    194 KB · Views: 75
Last edited:
Sort by date Sort by votes
Yep, looks like it. Wire it up as it says for 240v so connect T1-T10 and T4-T7 and use T1 and T4 for power. I'm not sure I'd trust this thing if you don't know it's history, maybe supply via a 30ma RCD and if it trips, especially if it's before an arc is struck, I'd investigate its safety.
 
Upvote 0 Downvote
Thanks for the replies , that is how I read the face plate but it is the first oil set that I have come across that is only 240v .
The other thing that threw me a bit is the isolator on the side seems to be rated at 20 A which is a bit low for a single phase set I would have said ?
 
Upvote 0 Downvote
Good point Spin , but I was looking at it as more than a hobby craft set all be it a large one at 20A .

I normally see these on a 2 phase 32a supply , so 20a single phase just seems a bit low to me ?
 
Upvote 0 Downvote
It might not be an on-load isolator so as long as the primary leakage current is less than 20A (which it may or may not be looking at the photos) it should be fine ;)


**edit**

You've got 3 wiring options, 240v L+N, 400V L+L from a 3-phase supply or 460V L+L from a split phase supply. You just need to configure accordingly as per the chart in the picture.
 
Last edited:
Upvote 0 Downvote
I have a Clarke 180 single phase welder, which was at the time I bought it, was the bottom of their industrial range.
That should be on a 20A plug, but I used a normal 3 pin plug which has served me well for about 20 years.
The plug fuse has been changed only a few times during that time.
 
Upvote 0 Downvote
Yes, it's single phase, but the wide range of tappings allows use between the lines, when it will take only sqrt(3) of the current compared to running L-N. As I was saying in my very first post on this forum, it remains a single-phase load when operating on two phases of a three phase supply.

The plate seems to state 320A continuous MMA output and a max intermittent input of 28kVA. If they are doing heavy work on it I am not surprised it's eating 32A fuses! If the work is light it might be OK, but in any case if a 3-phase supply is available take advantage of it. Connect tappings to suit the line voltage e.g. with 400V connect T5 to T8 and feed T3 from L1 and T7 from L2.
 
Upvote 0 Downvote

Reply to Is this a single phase welder ? in the UK Electrical Forum area at ElectriciansForums.net

Similar threads

woodster92
Help with Reg 551.7.2 Ina >= In + Ig(s) on 3 Phase Supply
Just stick the 63amp fused connector before the Henley block , or Lucy block as you call it, and your all good, as for your 2nd point, , the...
Replies
1
Views
886
Upton Sparks
Upton Sparks
wsoppitt
remote 3 phase charger install
Given that a lot of EV's only charge from one phase when connected to a 3 phase chargepoint does the customer really need a 3 phase chargepoint...
Replies
1
Views
581
UNG
U

Recommended Sponsor News

Quickwire Now Sponsor ElectriciansForums.net

I am sure you will join me in welcoming our newest sponsors of ElectriciansForums.net - Quickwire! They have decided to join us after seeing you guys discussing their products here. Now we have an expert on board that you can chat to @Quickwire-Sam who will be happy to answer your queries!

[ElectriciansForums.net] Quickwire Now Sponsor ElectriciansForums.net


@Quickwire-Sam said "At Quickwire, we're all about speed, safety, and reliability. We're a family-run business, and every Quickwire connector is proudly made right here in the UK, ensuring noticeable quality. In short, Quickwire is the fastest connection method on the market. Whether you're an experienced electrician or a DIY enthusiast, Quickwire makes electrical connections ridiculously quick and easy. We're passionate about blending British craftsmanship with innovation. If you have any questions or if there's any way we can help, please just ask me!"

Exclusive Forum Offer! Free euro 2024 wall chart for first 10 responses!

Hi everyone,

We have 10 exclusive Uheat EURO 2024 Wallcharts to giveaway for Electricians Forum Members! The first 10 people to reply YES to this thread - I will message and get them sent out to you just in time for this years tournament! GO GO GO

PCBWay Now Sponsor ElectriciansForums.net!!

I hope you will all join me in welcoming our newest sponsor to the forum PCBWay! You can contact their friendly people by sending a message to @PCBWay who will be happy to answer your queries.

Welcome to the community and thanks for your sponsorship!

[ElectriciansForums.net] PCBWay Now Sponsor ElectriciansForums.net!!

PCBWay provides services including PCB Prototype and batch Production, PCB Assembly (SMT), 3D Printing, CNC Machining, PCB Design, Electronics Modules Selling, etc. We are committed to meeting the needs of global makers from different industries in terms of quality, delivery, cost-effectiveness, and any other demanding requests in electronics.

[ElectriciansForums.net] PCBWay Now Sponsor ElectriciansForums.net!!

OFFICIAL SPONSORS

Electrical Goods - Electrical Tools - Brand Names Electrician Courses Green Electrical Goods PCB Way Electrical Goods - Electrical Tools - Brand Names Pushfit Wire Connectors Electric Underfloor Heating Electrician Courses
These Official Forum Sponsors May Provide Discounts to Regular Forum Members - If you would like to sponsor us then CLICK HERE and post a thread with who you are, and we'll send you some stats etc

YOUR Unread Posts

Thread starter

JD6400

JD6400

Mentor
Arms
-
Joined
Location
?

Thread Information

Title
Is this a single phase welder ?
Prefix
N/A
Forum
UK Electrical Forum
Start date
Last reply date
Replies
8
Unsolved
--

Thread Tags

Tags
phase single single phase welder
This website was designed, optimised and is hosted by untold.media Operating under the name Untold Media since 2001.
Back
Top