Welder cuts out CCTV

[Bemo]

I have cctv in my workshop and every time I use the welder (3ph) the cctv resets and has damaged 1 camera already and I lost another 1 for a while after it restarts. I have used a surge protector extension cable but that doesn’t stop it. Anyone got any ideas to help. Cheers.

 

[Lincs Lass]

Is it the welder or the arc flash that the cameras are over compensating for

 

[Bemo]

The cameras are outside in the yard, it’s the recorder unit that restarts itself when you weld. its a fairly new mig welder as well.

 

[Pheasant Surprise]

Bit of both.....

What I mean by that is that the problem is poor shielding both on the CCTV recorder and also the welder. It takes two to tango.

If it's an IP-based camera and recording system (rather than the traditional coax type) you might be able to locate the recorder in another building and extend the network.

Alternatively you might to able to put a surge suppression type filter on the power supply to the recorder.

Even a power cable with a chunky ferrite bead might help.

 

[Bemo]

Do you think something like this on the cable may help, might be worth a punt.

 

[TechWise]

I would be rather disappointed if my new welder had such bad electromagnetic emissions that it was causing other equipment to get upset.
Another avenue that occurs to me is if the welder starting is causing a temporary voltage sag which is causing the recorder to cut out and start up again.

 

[cambsfarmer]

I would be rather disappointed if my new welder had such bad electromagnetic emissions that it was causing other equipment to get upset.
Another avenue that occurs to me is if the welder starting is causing a temporary voltage sag which is causing the recorder to cut out and start up again.

Welder will only be using 2 phases try running the camera off the phase the welder is not using.

 

[Bemo]

To be fair it’s about 5 years old, I just meant that it wasn’t ancient.

I thought the welder was using all 3 phases just not the neutral.

 

[markc]

i think welder will be using 2 phases and not the neutral so getting 400v ish volts, may use neutral a bit but not for main power maybe for wire feed and such

 

[RushesToo]

If you are running the cable to the camera and the power to the welder in the same trunking then this would be causing the failure. Induction going straight to a camera that is not capable of taking it. Could this be the problem?

 

[B'o'B]

You could get a small uninterruptible power supply for the cctv. That should iron out the supply pretty well I’d have thought.

 

[Pheasant Surprise]

You could get a small uninterruptible power supply for the cctv. That should iron out the supply pretty well I’d have thought.

Doubt it honestly. Most of the smaller ones are “standby” type rather than “online”. They might do some filtering of the supply.

https://www.eetimes.com/document.asp?doc_id=1272971

 

[B'o'B]

Doubt it honestly. Most of the smaller ones are “standby” type rather than “online”. They might do some filtering of the supply.

https://www.eetimes.com/document.asp?doc_id=1272971

Interesting, every days a school day.

 

[Bemo]

Welder will only be using 2 phases try running the camera off the phase the welder is not using.

Thanks, moved the ring main sockets from L3 to L2 and it has sorted it. Thanks.

 

[Pheasant Surprise]

Thanks, moved the ring main sockets from L3 to L2 and it has sorted it. Thanks.

Result.