Plasma 1650 up in smoke!!!!

[AmericanMetal]

So after the machine torch meltdown, we bought a new machine torch and installed it yesterday. It was cutting great. Then today we decide to try out 3/4" as we have a job coming up after the 1st of the year. First cut was pretty good, but didn't finish. So I changed the lead ins and cut a second one. It came out pretty nice. Third time wasn't the charm. As soon as it finished the cut there was a loud pop and a pretty blue flash. Our shop went dark and the plasma was dead.....I had the machine at 100 with 100amp tip and cutting at 31 ipm. I just don't know what I am doing to destroy Hypertherm stuff like this...

[jlnading]

Those parts can be replaced, order from Electronic Components Distributor | DigiKey Corp. | US Home Page , I would be checking the voltage the machine was plugged into

[AmericanMetal]

Its plugged into 208v three phase, 80 amp. I think too many things burned up to replace. Guess I'll have to find a local repair center and let them decide.

[WSS]

The 1650 has auto voltage configuring I think. It should be plug and go. Maybe a phase dropped? This being your second "event", you should check your line voltage for proper phasing and input voltage before the next round. We run a 1650 as well and it usually shuts down if the voltage fluctuates much (the "line problem" light goes on).

WSS

[AmericanMetal]

There was no warning, no power fluctuations nothing...weird hing was it happened at the end of the cut when it would normally turn off.

[jimcolt]

I would recommend contacting Hypertherm tech service, show them the pics, describe the failure. They spend their lives talking to hundreds of thousands of Hypertherm end users, and I suspect they will have an idea of the type of failure. They also can direct you to the nearest repair facility. It will be less expensive to repair the unit....than to purchase a new one of course.

My guess is that the Main switching device that is mounted on the main heatsink, it is an IGBT (Insulated Gate Bipolar Transistor) failed......which is about the only failure that can cause enough of a short to trip the main power in your shop. While these units are pretty robust, like anything else they can fail. Dirt, voltage spikes, missing phases can cause issues.

Technical Service
technical.service@hypertherm.com
800-643-9878 Tel - Toll Free in USA
and Canada

Jim Colt

[jlnading]

One thing to check, have an electrician look at the three phase to see if you are dropping a leg and check to see if there is a high leg, high leg will burn up electronic controls, you could be having surges or power fluctuations also, I would have it all checked anyway. Burning up two units, there has to be a problem with the power.

[AmericanMetal]

Technically only burned up one unit...and one machine torch. One may have caused the other? Both were bought used so I have no idea of the real age. I have contacted the tech dept and will stay in contact with them. I will double check the outlet and see what kind of voltage I am getting. And there is something on the plasma cutter called bipolar? Don't they have medicine I can give it to cure that? LOL thanks for the input guys. It cut great, not as good as the pics Jim sent me but close. I knew it was to early to get all giddy.

[WSS]

Technically only burned up one unit...and one machine torch. One may have caused the other? Both were bought used so I have no idea of the real age. I have contacted the tech dept and will stay in contact with them. I will double check the outlet and see what kind of voltage I am getting. And there is something on the plasma cutter called bipolar? Don't they have medicine I can give it to cure that? LOL thanks for the input guys. It cut great, not as good as the pics Jim sent me but close. I knew it was to early to get all giddy.

I just asked my doctor and he says there is no way a 1650 has what I have. He does not recommend Zolof to fix it

WSS

[tunet]

HI,

link: http://www.primartec.com.br/download...E%20MANUAL.pdf