Machine, 2 of the 5/8-18 RH to 1/4BSP gas connections
Does Not Include:
Victor Flowmeter and gas hose, 12.5' Heavy Hitter 350 Torch with super flex cable, 10' ground cable , 12' SSC Foot Pedal Welding Cart, Gas Bottle, Tungsten, or Filler Rod
Financing as low as
$99/mo
The HTP® Invertig line up has now elevated to the next level!
This package is for customers who want the brand new HTP® Invertig 251 but would like to use their existing Miller® accessories -torch, ground clamp, foot pedal(14pin) and existing gas hose and flowmeter please note that your Miller TIG torch will need the 35 Dinse connection with the side gas-you will need a different dinse connection if you have a flow thru torch). When you order this package in single voltage you are getting the Invertig 251SV welding machine and two adapters to convert the 5/8-18 gas fittings to 1/4 BSP.
Meet the HTP Invertig 251 AC/DC – Americas most advanced AC/DC tig welding machine.
This is the one that broke the mold. HTP® (High Technology Products) is continuing its legacy setting the standard in the welding industry once again. The new HTP® Invertig 251 AC/DC is the machine you have been waiting for! Of course, this machine is also Made in Italy just like all previous and current HTP® Invertig machines, excellent build quality and arc dynamic, packed with features that other manufactures have not even heard of yet. It features 1 amp starting and 250 amps max output and it comes with an easy to navigate menu displayed on a 5.1” Hi definition LCD Color Screen.
If you are serious about high end welding, you want outstanding results, you weld exotic or reactive metals, look no further. The HTP® Invertig 251 AC/DC has multiple ways to start the arc, you can use it with foot pedals, sliders, rotary hand controls, the TIG Button™. Thanks to our new Dynamic Power™ option you don’t really need a foot pedal anymore. You can vary your amperage simply by how close or how far you hold your torch to the workpiece. If you previously owned a blue welder of course all your accessories including your wireless pedal, cold wire feeder, orbital welding machine, etc. ALL those accessories are a direct fit, no electrical adapters or switching over of any kind needed.
In DC you now have options you never had before. If course you can weld regular DC TIG, nothing special, and you can pulse DC TIG, most machines can do that too, but now you have a Soft Pulse option also where you can pulse DC TIG without the annoying sound. Those exotic or reactive metals I was talking about earlier, don’t you wish there was an easier way to weld Titanium and Stainless? Well, now there is: DC double pulse. You have a high-speed pulse overlaid with a low-speed pulse, helping you to reduce heat input, HAZ, distortion and increase travel speed. We also revolutionized the way how you can hold parts in place with our new Fast-Tack technology.
In AC you have all the options you have ever wanted. You can choose from different AC wave forms, then you can “mix and match” choose one wave shape for the positive side of the wave and another one for the negative side of the wave. Of course, you can still adjust your balance and frequency to 400Hz (100 amps and less) and 200Hz (101-250 amps) and you have asymmetric AC as well, but now you can choose your zero-crossing current. This makes you puddle more stable and less aggressive. If you are looking to weld BIG stuff with this machine, we know how much heat it can take to weld thick aluminum and no matter if you use 100% Argon or AR/HE mixes we added a Mix AC/DC feature that will allow you to mix DC into the AC welding arc and help you with tremendous amounts of additional penetration.
To learn more about this machine contact our customer service experts to see how YOU can benefit from this technology today.
| Input Voltage | Single Voltage 220V (208 to 240V) |
| Welding Current Single-Phase (240 volt) TIG | 1 to 250A |
| 240V Single-Phase Input Amps @ Rated Load | 40A |
| Welding Current Single-Phase (240 volt) STICK | 10 to 200A |
| Max Rated Output TIG | 250A |
| Max Rated Output STICK | 200A |
| Open Circuit Voltage | 70V Stick - 90V TIG |
| Class | IP23S |
| Duty-Cycle (TIG) @104F @240Volt | 20% @ 250A 60% @ 160A 100% @ 130A |
| Duty-Cycle (Stick) @104F @240Volt | 25% @ 200A 60% @ 140A 100% @ 120A |
| Welding Modes | Stick TIG 2T |
| Tig Process | AC, DC, AC Mix |
| TIG AC Process | AC, AC Mix, Pulse |
| TIG DC Process | Standard, Pulse, Soft Pulse, Double Pulse, Dynamic Power |
| AC Mix | Yes |
| AC Mix (DC percentage) | 10 to 90% |
| Asymmetric Arc | Yes |
| EN Amperage (%) | 10 to 100% |
| EP Amperage (%) | 10 to 100% |
| AC Frequency (Hz) 2-100A | 20 to 400Hz |
| AC Frequency (Hz) 101-250A | 20 to 200Hz |
| AC Balance (%) | 10 to 90% |
| AC Wave Forms | Square, Triangle, Sine |
| AC Wave Forms mix and match | Yes, All |
| AC Zero Crossing Current | 20 - 80A or AUTO |
| Spot Process | Standard, Fast-Tack |
| Spot Time ON (Seconds) | 0.01 to 10.0s |
| Spot Time OFF (Seconds) | 0.01 to 10.0s |
| Stick Process | Manual, Easy-SET, DC pulse, DC Soft Pulse, AC Standard |
| Pulse Stick | Yes |
| Stick Electrode Selection | Yes |
| Stick Hot Start (%) | 0 to 50% |
| Stick Hot Start Time (seconds) | 0 to 2.5s |
| Stick Arc Force (%) | 0 to 500% |
| Stick DC Polarity | Reverse (DCEP) – Straight (DCEN) |
| General Tig Settings | |
| Pre-Flow (seconds) | 0.1 to 25s |
| Post-Flow (seconds) | 0.1 to 50s |
| Initial Amps (%) | 10 to 90% |
| Initial Amps Time (seconds) | 0 to 25s |
| Final Amps (%) | 10 to 90% |
| Final Amps Time (seconds) | 0 to 25s |
| Slope Up (seconds) | 0.1 to 10.0s |
| Slope Down (seconds) | 0.1 to 10.0s |
| Tig Minimum Amp Regulation | 1 to 100A |
| Tig Hot Start | 5 to 100A or AUTO |
| Tig Tungsten Selection | Yes, .040”, 1/16", 3/32", 1/8" |
| Tig Arc Starting | HF, Lift, Lift Pipe, Pipe Lift Smart |
| Pulse Parameters | |
| Stick Pulse Frequency (PPS) | 0.4 to 5.0 |
| Stick Pulse peak time (%) | 10 to 90% |
| Stick Pulse Background Amps (%) | 10 to 90% |
| Pulses/Second (PPS) TIG AC | 0.4 to 20.0 |
| Pulses/Second (PPS) TIG DC | 0.4 to 1000 |
| Peak Time (%) | 10 to 90% |
| Background Amps (%) | 10 to 90% |
| Automatic Polarity Reversal | Yes |
| Programmable Memories | 8 |
| Cooling (On Demand) | Fan Variable Speed (Forced Air) |
| Dimensions (Length x Width x Height) | 19-3/4" x 10" x 15-1/2" |
| Weight (Lbs.) | 48 Lbs. |
Downloads/Manuals
THE INVERTIG 251 AC/DC SINGLE VOLTAGE MILLER® PACKAGE INCLUDES THE FOLLOWING ITEMS:
♦ HTP® INVERTIG 251 SV AC/DC POWER SOURCE
♦ Two 5/8-18RH to 1/4 BSP Gas Fitting Adapters to adapt your Miller ® Torch and gas hose
*This package will only work if you already own a Miller® Tig torch with the 35 dinse and the Miller® 14 pin foot pedal.
Warning: Welding and cutting equipment, accessories, and fumes can expose you to chemicals, including Chromium (Hexavalent Compounds), Lead, and Nickel, which are known to the State of California to cause cancer and/or birth defects or other reproductive harm.
For more information, please visit www.P65Warnings.ca.gov.Rates from 0% APR or 10-36% APR. Payment options through Shop Pay Installments are subject to an eligibility check and are provided by these lending partners: affirm.com/lenders. Options depend on your purchase amount, and a down payment may be required. State notices to consumers affirm.com/licenses.
Owner’s Manual