TIG Welders

Invertig 400 AC/DC

Product # 601602




Includes:

Welding Cart, Smart Water-Cooler, 12’ 18 Series Trim Line Water-Cooled TIG Torch, TIG Torch Consumable Kit, 12’ Foot Pedal, 15’ Ground Clamp, Flowmeter, Gas Hose, 1-Gallon of Coolant

Does Not Include:
Gas Bottle, Filler Rod, Power Plug


    Our Price:
  • Regular price $6,995.00


Description:

We designed the all new HTP America® Invertig 400 AC/DC for heavy use in industrial settings; applications of use include precision fabrication, motor sports and racing fabrication, pipe fabrication, aluminum fabrication, aerospace work and repair, along with work and repair in ship and rail yards. The Invertig 400 runs the following processes: TIG (GTAW), Pulsed TIG (GTAW-P), Stick (SMAW), and Pulsed Stick (SMAW-P). When connected to single-phase, 208V to 240V power, the Invertig 400 features the highest output of any welder on a 50 amp circuit—a full 350 amps of raw welding power! Additionally, the versatile Invertig 400 runs on 3-phase power from 208V to 575V, providing the full welding amperage of 4 to 400 amps. The Invertig 400 showcases a rated output of 350 amps when run on single-phase and a rated output of 400 amps, with a remarkable 100% duty cycle at 300 amps, when run on 3-phase.

General Features

  • Automatically adjusts for input voltage: 208-240V on single-phase and 208-575V on 3-phase
  • Meters can be calibrated for certification
  • Smart water-cooler that only turns on when needed and stops the arc when it detects a low coolant level
  • The cooling fans blow directly into heat sinks and the circuit boards are protected from grinding dust and moisture by a special lacquer coating which makes the machine IP23
  • Cooling fans work on-demand; the fans only power up when cooling is required, reducing noise and eliminating unwanted grinding dust from being pulled into the machine while the machine is idling
  • Lift-Arc Start gives you the option of TIG arc initiation without high frequency (useful when you work around sensitive electronics where high frequency is unwanted)
  • 30 memory programs allow you to save specific welding parameters for 30 different welding jobs

 
Stick Features

  • Arc-Force (DIG): Helps reduce "sticking" of the electrode
  • Hot-Start: For easy arc strikes
  • DC and AC Stick Welding: AC frequency and balance can be adjusted in Stick mode as well
  • Pulse Stick Welding: Makes bridging gaps easier, welds out of position better, and reduces heat input

 
TIG Features

  • 350 amp output on 50 amp Single-Phase Circuit
  • Asymmetric AC allows you to limit Electrode Positive or Electrode Negative amperages separately, which gives you more control over heat input on critical welds
  • AC Balance: Adjustable from 10 to 90%; allows precise control of oxide removal vs. penetration
  • AC Frequency: 20Hz to 400Hz (under 100 amps) and 20Hz to 200Hz (over 100 amps); Helps reduce or enhance heat input and focus the arc
  • Three AC Waveforms: Soft Square, Square, and Triangular


The Invertig 400 AC/DC complete water-cooled package includes the following items:

– Invertig 400 AC/DC Power Source
– Welding Cart
– Smart Water-Cooler
– 12.5' or 25' 18 Series Trim Line Water-Cooled TIG Torch with a Standard Rigid Neck or with a Flex Neck (Your Choice; Selected Before You Add to Cart)
– 12.5' or 25' Foot Pedal
– Flowmeter
– Gas Hose
– 1 Gallon of Coolant
– TIG Torch Consumable Kit
– 15' Ground Cable and Clamp Assembly If You Choose 12.5' Leads and 15' Ground Cable and Clamp Assembly Plus a 15' Extension If You Choose 25' Leads

*Please note: This is the base package for the Invertig 400. Other upgrade options may be available. Please contact Customer Service at (847) 357-0700 to discuss your upgrade options.


Specifications

Input Voltage Single-Phase: 230V (208-240V)
3-Phase: 200-575V
Welding Current Single-Phase 4 to 350 Amps
Welding Current 3-Phase
40 to 400 Amps
Single-Phase Rated Output 35% @ 350 Amps
230V Single-Phase Input Amps @ Rated Load 50 Amps
3-Phase Rated Output 30% @ 400 Amps
3-Phase Input Amps @ Rated Load

230V = 36 Amps
400V = 21 Amps
460V = 17.6 Amps
500V = 16.8 Amps

Welding Modes (5)

STICK
TIG 2T
TIG 4T
TIG SPOT
TIG RESET

Programmable Memories

30

Asymmetric AC

Yes

AC Frequency (Hz)

20 to 400 (Up to 100 Amps)
20 to 200 (Over 100 Amps)

AC Balance (%) 10 to 90
Pre-Flow (Seconds) 0.1 to 5.0
Post-Flow (Seconds) 0.1 to 99.9
Initial Amps (%) 10 to 90
Final Amps (%) 10 to 90
Slope Up (Seconds) 0.1 to 10.0
Slope Down (Seconds) 0.1 to 10.0
Spot Time (Seconds) 0.1 to 10.0
Hot-Start (%) 0 to 50
Arc-Force (%) 0 to 500
Wave Forms Soft Square
Square
Triangular
EN Amperage (%) 10 to 99
EP Amperage (%) 10 to 99
Duty-Cycle Single-Phase TIG 35% @ 350 Amps
60% @ 250 Amps
100% @ 200 Amps
Duty-Cycle 3-Phase TIG 30% @ 400 Amps
60% @ 340 Amps
100% @ 300 Amps
Duty-Cycle Single-Phase Stick 35% @ 260 Amps
60% @ 200 Amps
100% @ 180 Amps
Duty-Cycle 3-Phase Stick 35% @ 300 Amps
60% @ 240 Amps
100% @ 200 Amps
Dimensions
Power Source Alone
On Welding Cart

26-1/2" L x 12-1/4" W x 17-1/2" H
38-1/2" L x 20-1/2" W x 41" H
Weights
Power Source Alone
Power Source & Cart
Power Source, Cart, & Water-Cooler

122 Lbs.
204 Lbs.
250 Lbs.
Pulse Parameters
Pulses/Second (PPS) Stick AC & DC
Pulses/Second (PPS) TIG AC
Pulses/Second (PPS) TIG DC
Peak Time (%)
Background Amps (%)

0.4 to 5.0
0.4 to 20.0
0.4 to 999.9
10 to 90
10 to 90



CA Prop 65 - For Residents of California
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.
Customer Reviews
5.0 Based on 4 Reviews
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RB
08/12/2020
Ron B.
United States United States
Invertig 400 Evaluation

Full Disclosure: I am not a professional welder but am a huge HTP fan, already owning an Invertig 221, an Inverarc TLP, and a Pro Pulse 200 and Pro Pulse 300. I became acquainted with HTP welders, when I enrolled at the Truckee Meadows Community College in Reno, Nevada in the Welding Technologies degree program. TMCC uses Invertig 221s as the primary TIG welders, although they also have a few large Lincoln and Miller commercial TIG welders in the 350+ amperage range. So I have been able to use several different quality power sources that I can draw a comparison to. And TMCC now has an Invertig 400 for use in the advanced welding program. I purchased my Invertig 221 in October of 2014 and have used it almost weekly for the past 5+ years as part of my hobby of welding for relaxation. The 221 is a great welder with no limitations other than the higher amperage. So when the 400 came out, I knew I just had to have one. The difference between the 221 and the 400 is the difference between "great" and "fabulous". What makes that difference, besides the added horse power are several subtle things. The first is the "big picture" ease of operation and setting changes. The 400 front panel screen shows every setting in one simple to understand picture. Changes are then just a one or two switch operation, that are also immediately visible on the screen. That screen is magic!! The next difference is how quietly it runs with the dedicated "on demand" cooler designed to work with the welder. I didn't realize how much that "quiet operation" could mean, but I am now hooked. And finally, of course, are the additional modes, along with spectacular arc dynamics and the different wave forms and added setting options. All this, coupled with the added amperage capability, put this welder in a class with just a handful of other well-known commercial welders, all of which are more expensive. I have used the 400 since January, and have about 250 hours on it. I tried stick welding with it, and was impressed, although as great as it is, nothing can compare to the Inverarc TLP when it comes to pure SMAW/Stick welding smoothness and pleasure. So I use the 400 exclusively for AC and DC TIG welding. I will definitely keep my 221 as a backup welder, especially since I can use it with 110 volts for lower amperage applications when 220 volt power is not available. But the 400 has become my absolute "Go To" welder when it comes to TIG welding. As I disclosed, I am not a professional welder. I am a retiree, who took up welding about 12 years ago as a hobby rather than golf. It is just as frustrating and probably as expensive. As such I weld almost every day, just for fun. So if any potential customer wants any added honest feedback feel free to give them my contact information. HTP can well be proud of the Invertig 400.

O
08/10/2020
Oscar
United States United States
You. Need. This. TIG. Period.

Very happy with this TIG as it has all the power I will ever need. As soon as you plug it in and turn it on, it's always in BEAST MODE, as it has HP to spare! But the low-end is something to behold as well. The arc performance is crazy good. With the right taper grind/sharpening on a 5/32" Ce tungsten, and with just the right amount of user-adjustable hot-start, it can maintain a stable arc down to 4 amps. Yes, a 5/32" Ceriated tungsten on this TIG can maintain a stable arc down to 4 amps ! Check out my video on YouTube on this machine if you want to see all the menus and features and functions. The on-demand Smart-Cooler is great because it's whisper quiet and only runs when needed. Nothing in this price range can touch this welder/cooler/cart combo. As a stick welder, it is ****** good. Plenty of power to run all but those 3/4" diameter electrodes! The adjustable pulse function and AC gives it that nice edge. With pulse, you can run a 5/32" 6011 to weld 14 gauge material. I did this on my Inverarc 200 TLP, but this machine would also be capable of that same exact feat. And of course, you can use a slider control when you're stick welding (or TIG of course) to control the heat on-the-fly, or even a wireless footpedal.

J
08/05/2020
Jonah
United States United States
HTP Invertig 400

I absolutely love this machine! I wasn't happy with the duty cycle and arc starts on my Miller Dynasty 300dx and I wanted the extra features for AC welding that my Lincoln Precision TIG didn't have. Not 100% happy with either welder, so I decided to go shopping. I looked at new Millers, WAY too overpriced and Lincoln only had one inverter to offer, Everlast, well lets just say I couldn't bring myself to purchase a made in China welder. I ended up with the HTP Invertig 400. Not overpriced, amazing arc stability (SUPER SMOOTH) and arc starting compared to my Dynasty, made in Italy, excellent customer support compared to the other brands and HUGE duty cycle on this machine, 100% @ 300amps! I never have to give it a break, I just weld all I want. This machine runs super quiet and only uses the fan speed that it needs to keep the noise to a minimum. It idles silently. The invertig 400 welded super nice with zero adjustments, right out of the box. I immediately sold the Miller dynasty and sold my Lincoln precision tig as well. My next 2 welders I plan to purchase will be HTP as well. Hands down the best welder I have ever used.

HTP America - USA Weld Invertig 400 AC/DC ReviewHTP America - USA Weld Invertig 400 AC/DC ReviewHTP America - USA Weld Invertig 400 AC/DC ReviewHTP America - USA Weld Invertig 400 AC/DC ReviewHTP America - USA Weld Invertig 400 AC/DC Review
SM
07/22/2020
Scott M.
United States United States
Best Tig Welder I’ve ever used in 36 years.

I started my welding shop in 1984. In the last 36 I’ve owned/used 10 different Tig welders. Blue & the other Ted brand. None of those tig machines were as capable as the HTP Invertig 400. The soft starting arc is awesome!!! At idle the machine is very quiet. Amperage control is better than any Miller Dynasty I’ve ever owned. When I decided I needed a great Tig machine I looked Miller,Lincoln,HTP, Everlast. Everlast was priced lower but after reviewing their FB page I found about 2in 10 had real problems with the machine within months of buying it. The Miller Dynasty 400 was 11k with tax. Lincoln didn’t have anything that interested me. The HTP 400 was priced right and seemed to have good customer satisfaction. So after taking with Peter Zila I decided on the HTP. Best welder I’ve ever bought in 36 years of business. And I’ve owned over 50 machines. I guarantee you won’t be disappointed in your purchase of any HTP welder. Thanks Scott Mock Owner of Chubbys Welding & Machine. Since 1984.