HTP America TIG Specs Comparison	Invertig 221	Invertig 313	Invertig 400
Input Voltage	Single Voltage: 220V (208-240V) Single-Phase Dual Voltage: 110V/220V (208-240V) Single-Phase	230V (208-240V) Single-Phase or 3-Phase	Single-Phase: 230V (208-240V) 3-Phase: 200-575V
Welding Current Single-Phase	4 to 220 Amps	4 to 300 Amps	4 to 350 Amps
Welding Current 3-Phase	—	4 to 300 Amps	4 to 400 Amps
Single-Phase Rated Output	20% @ 220 Amps	40% @ 300 Amps	35% @ 350 Amps
230V Single-Phase Input Amps @ Rated Load	Single Voltage = 36 Amps Dual Voltage = 26 Amps	44 Amps	50 Amps
3-Phase Rated Output	—	80% @ 300 Amps	30% @ 400 Amps
3-Phase Input Amps @ Rated Load	—	230V = 32 Amps	230V = 36 Amps 400V = 21 Amps 460V = 17.6 Amps 500V = 16.8 Amps
Welding Modes	STICK TIG 2T TIG 4T TIG SPOT TIG RESET	STICK TIG 2T TIG 4T TIG SPOT TIG RESET	STICK TIG 2T TIG 4T TIG SPOT TIG RESET
Programmable Memories	64	30	30
Asymmetric AC	Yes	Yes	Yes
AC Frequency (Hz)	20 to 200	20 to 400 (Up to 100 Amps) 20 to 200 (Over 100 Amps)	20 to 400 (Up to 100 Amps) 20 to 200 (Over 100 Amps)
AC Balance (%)	10 to 90	10 to 90	10 to 90
Pre-Flow (Seconds)	0.1 to 2.0	0.1 to 5.0	0.1 to 5.0
Post-Flow (Seconds)	0.1 to 30.0	0.1 to 99.9	0.1 to 99.9
Initial Amps (%)	10 to 90	10 to 90	10 to 90
Final Amps (%)	10 to 90	10 to 90	10 to 90
Slope Up (Seconds)	0.1 to 2.0	0.1 to 10.0	0.1 to 10.0
Slope Down (Seconds)	0.1 to 2.0	0.1 to 10.0	0.1 to 10.0
Spot Time (Seconds)	0.1 to 10.0	0.1 to 10.0	0.1 to 10.0
Hot-Start (%)	—	0 to 50	0 to 50
Arc-Force (%)	—	0 to 500	0 to 500
Wave Forms	Square	Soft Square Square Triangular	Soft Square Square Triangular
EN Amperage (%)	10 to 90	10 to 90	10 to 90
EP Amperage (%)	10 to 90	10 to 90	10 to 90
Duty-Cycle Single-Phase TIG	20% @ 220 Amps 60% @ 165 Amps 100% @ 145 Amps	40% @ 300 Amps 60% @ 250 Amps 100% @ 200 Amps	35% @ 350 Amps 60% @ 250 Amps 100% @ 200 Amps
Duty-Cycle 3-Phase TIG	—	80% @ 300 Amps 100% @ 280 Amps	30% @ 400 Amps 60% @ 340 Amps 100% @ 300 Amps
Duty-Cycle Single-Phase Stick	25% @ 200 Amps 60% @ 155 Amps 100% @ 140 Amps	35% @ 260 Amps 60% @ 200 Amps 100% @ 200 Amps	35% @ 260 Amps 60% @ 200 Amps 100% @ 180 Amps
Duty-Cycle 3-Phase Stick	—	35% @ 300 Amps 60% @ 240 Amps 100% @ 200 Amps	35% @ 300 Amps 60% @ 240 Amps 100% @ 200 Amps
Dimensions	19-3/4" L x 7-1/2" W x 15-3/4" H	26-1/2" L x 12-1/4" W x 17-1/2" H	26-1/2" L x 12-1/4" W x 17-1/2" H
Weight	40 Lbs.	117 Lbs.	122 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 10.0 0.4 to 999 10 to 90 10 to 90	0.4 to 5.0 0.4 to 20.0 0.4 to 999.9 10 to 90 10 to 90	0.4 to 5.0 0.4 to 20.0 0.4 to 999.9 10 to 90 10 to 90