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Anonymous Poster

Is it Possible to Use ELCB for Three Phase Welding Machine?

09/24/2010 1:17 AM

We are having 440V 32Amps ,3 Phase Welding machine , which is having R Y B phase supply, Currents in R,Y,B , Phases are32A,16A,16A,.Can i use ELCB for these welding machine.

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Guru
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#1

Re: "is it Possible to use ELCB for three phase Welding machine"

09/24/2010 1:44 AM

A 3 or 4 pole RCCD (ELCB) will work fine.

I'd recommend it given the abuse most welding sets receive.

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Anonymous Poster
#2
In reply to #1

Re: "is it Possible to use ELCB for three phase Welding machine"

09/24/2010 2:29 AM

How does it, Plz give connection diagram

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Guru
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#9
In reply to #2

Re: "is it Possible to use ELCB for three phase Welding machine"

01/22/2021 5:08 AM

<...Plz give connection diagram...>

That description comes on the instruction leaflet supplied with it.

If in doubt, consult a locally qualified Electrician.

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#3

Re: "is it Possible to use ELCB for three phase Welding machine"

09/24/2010 2:52 AM

ITS A PERFECT SOLUTION FOR A SAFE ELECTRICAL OPERATION OF WELDING SETS AND ONLY THING YOU HAVE TO SELECT THE MAX ALLOWABLE LEAKAGE CURRENT PERMISSIBLE.

TO MY KNOWLEDGE FOR A HEALTHY EQUIPMENT CONNECTED TO A DEDICATED 32AMPS TPN 415VOLT WELDING SET 63mA CURRENT IS OK.

IN FACT THIS PRACTICE IS FOLLOWED IN REFINERIES WORLDWIDE FOR GIVING POWER SUPPLY TO WELDING MACHINES.

PRIODICALLY U HAVE TO CHECK THE HEALTHINESS OF THIS ELCB IN EVERYMONTH AS A SAFE/STANDARD ELECTRICAL ENGINEERING PRACTICE.

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Guru
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#4
In reply to #3

Re: "is it Possible to use ELCB for three phase Welding machine"

09/24/2010 4:18 AM

STOP SHOUTING!

TURN CAPS LOCK OFF

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Guru
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#10
In reply to #4

Re: "is it Possible to use ELCB for three phase Welding machine"

01/26/2021 1:26 PM

Rest In Peace Tony S...

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Anonymous Poster
#7
In reply to #3

Re: "is it Possible to use ELCB for three phase Welding machine"

09/27/2010 1:21 AM

Shhhhhhhhhhhhhhhhhhhhhhhhhhhhhh!

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Guru
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#5

Re: Is it Possible to Use ELCB for Three Phase Welding Machine?

09/25/2010 12:06 AM

You must use long delay CBs due to the heavy start surges in welding machines of the transformer type. Otherwise you will have nuisance tripping.

A 75 Amp 3 phase incoming supply would have been better for your machine.

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#6

Re: Is it Possible to Use ELCB for Three Phase Welding Machine?

09/26/2010 4:38 PM

Yes you can use an ELCB we run them on all our welders, use motor start or d curve breakers this deals with incidental tripping due to high inrush current when starting the weld.

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#8

Re: Is it Possible to Use ELCB for Three Phase Welding Machine?

09/27/2010 9:26 AM

Yes this is a compulsory statutory requirement to have welding on EL Protection for fire requirements (300mA)

Ronald Naidoo

Electrical Engineer

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Anonymous Poster (2); bsekhar (1); garth (1); Grochy (1); JRaef (1); PWSlack (1); ronaldnaidoo (1); TonyS (2)

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