Specifications

The 221 gives you precise control over the AC balance (from
10% to 90%) so you can control the arc cleaning action.
The 221 is an excellent DC welder. The smooth, stable arc
coupled with the 221’s high speed DC pulse makes intricate
work on mild steel, 4130, stainless, inconel, and titanium a
breeze. The high speed DC pulse focuses the DC arc much
like the AC balance focuses the AC arc; the end result—more
control and less arc wandering. With a pulse rate of up to
999pps, there isn’t a job out there the 221 can’t handle.
Let’s face it, control of the arc is the foundation of better welds
and precision results. With the 221’s independent AC
amperage adjustment, adjustable AC frequency, adjustable AC
balance, and high speed DC pulse, the 221 gives you arc
control like you never before experienced.
The 221 allows you to store 64 separate welding programs.
Say you find a setting you really like for welding aluminum
radiator tanks. Simply store this program and you can come
back to it when you have another tank job.
The Invertig 221 provides outstanding performance when stick
welding in either AC or DC modes.
Select the touch start mode for welding aluminum or any other
material without High Frequency. This is important if your
application takes you near sensitive electronic equipment, such
as on site repairs in a hospital or repairing aluminum vehicles
with on-board computers.
This package of power comes standard with a 12 ½' long 17
Series air-cooled TIG torch, a 12 ½’ foot pedal, 10’ ground
clamp, flowmeter, gas hose and TIG DVD.
The advanced technology found in the Invertig 221 allows you
to produce professional quality welds in all types of metal—
quickly, easily, and affordably. And every Invertig 221 comes
with our 90-day money back guarantee. We are so sure you
will love your Invertig 221 that you can try it in your own shop
for 90 days—if for any reason you don’t like it we will take it
back, no questions asked. Further we back the machine with a
3-year warranty. The Invertig 221 ships free anywhere in the
Continental United States, additional charges will apply for
Hawaii, Alaska, Puerto Rico and international locations.
TIG Welders and TIG Welding Accessories
5
SPECIFICATIONS
Input Voltage
Input Amperage Tig
Output Amperage Tig
Duty Cycle
No Load Voltage
Stick Welding Amps
Arc Voltage
Torch Length/Type
Foot Pedal Length
Ground Cable Length
Slope Down
Pre-Gas Flow
Post Gas Flow
Final Current
Pulsing Frequency
Back Ground Current
Peak Time
Spot Welding Time
AC Frequency
AC Balance
Weight
Size
Invertig 221
220 Volts
36 amps @ 220 amps
4 to 220 amps
20% @ 220 amps
60% @ 165 amps
100% @ 145 amps
65 volts
200 amps
10.2 to 18.8 volts
SR 17 – 12.5’ Long
12.5 ft
10 ft
.1 to 10 sec
.1 to 2 sec
.1 to 30 sec
10% to 90%
0.1 to 999 Hz
10% to 90%
10% to 90%
.1-10 sec
20 to 200 Hz
10 to 90%
40 lbs.
19 ¾” L x 7 ½” W x 15 ¾” H
Invertig 221 DV
230 Volts
26 amps @ 220 amps
4 to 220 amps
20% @ 220 amps
60% @ 165 amps
100% @ 145 amps
65 volts
200 Amps
115 Volts
30 amps @ 130 amps
4 to 155 amps
20% @ 155 amps
60% @ 130 amps
100% @ 110 amps
44 volts
140 Amps
10.2 to 18.8 volts
SR 17 – 12.5’ Long
12.5 ft
10 ft
.1 to 10 sec
.1 to 2 sec
.1 to 30 sec
10% to 90%
0.1 to 999 Hz
10% to 90%
10% to 90%
.1-10 sec
20 to 200 Hz
10 to 90%
41 lbs.
19 ¾” L x 7 ½” W x 15 ¾” H
Free Shipping - All Orders Over $35
Invertig 221
TIG Welders and TIG Welding Accessories
4
Air Cooled #70221-12.5 $2495.00
Water Cooled #70221WC $2995.00
Dual Voltage #70221DV-PS $3020.00
When we introduced our first 200 amp AC/DC inverter
machine 10 years ago, we were up against some major
competitors. However, the market readily accepted the
tough line of HTP Invertig welders. Fast forward to
today—HTP introduces our third generation of AC/DC
inverter machines, the HTP Invertig 221!
HTP continues to set new standards in AC/DC inverter welders
with the Invertig 221. We increased the maximum welding
current by 10% to a full 220 amps of rugged welding power.
And we put the machine on a diet; the HTP Invertig 221 weighs
in at only 40 lbs, so it’s easy to take right to the job! We also
added the Invertig 221 DV (dual voltage) model which welds on
both 110 volts and 220 volts—the ultimate in portability.
The Invertig 221 is packed with features many of our competi-
tors don’t even offer at twice the price! It’s the only welder in
its class with independent AC amperage adjustment. This
feature gives you precise control over the heat input to both the
workpiece and the tungsten by allowing you to separately
adjust the electrode negative and electrode positive amperage.
Conventional transformer TIG welders have a fixed AC
frequency of 60 Hz (same as your household current). They use
a pure tungsten electrode which forms a ball when welding AC.
The Invertig 221 offers you the ability to adjust the AC
frequency from 20 Hz to 200 Hz—the higher AC frequency
gives you a more focused arc with greater arc control. With an
inverter, running a higher AC frequency, say in the 150 Hz to
200 Hz range, allows you to use ceriated, lanthanated, or
thoriated tungsten sharpened to a point, which:
• Allows the arc to jump from a point instead of a ball, which
provides unparalleled arc stability and reduces "arc wandering".
• Produces a more focused arc, resulting in a narrower bead,
making it much easier to weld inside corners.
• Minimizes the heat affected zone as the heat is more
concentrated, making it easier for both the novice and
professional to weld thin materials.
• 25' long, 17 Series air-cooled TIG torch
with a 25' foot pedal.
• 25' Ground with Clamp
• 15’ Ground extension
• Water cooled upgrade – includes water cooler
and replaces air-cooled torch with SR20
water-cooled torch
• Hand amp control with either slider or rotary control
• 15’ Electrode Holder & Cable
• 16 gauge, heavy duty cart with bottle tray
• Economy Cart
• Consumable Kit for torches
• Pyrex Cup Kit
• Machine Cover for Invertig 221
Leather Cover for TIG Torches 10’
Leather Cover for TIG Torches 23’
$56.00
$99.00
$60.00
$500.00
$185.00
$60.90
$329.95
$99.95
$61.00
$60.95
$55.00
$42.41
$74.95
Optional upgrade accessories:
Water Cooled version of the Invertig 221
with new Arctic Chill Cooler.
Cart and tank not included.
800-USA-WELD | www.USAWeld.com