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dc pulse tig welding machine RUGGED POWERFUL TOUGH DC TIG WELDER (PROTIG-500CT)

FOB Price: US $2.01 - 100000 piece

group name: All products

Min Order: 1 piece

brand name: TOPWELL

model: PROTIG-500CT

Nearest port for product export: Shanghai/Ningbo Port

Delivery clauses under the trade mode: FOB, CFR, CIF, EXW

Acceptable payment methods: T/T

Export mode: Have the independent export and import right

update time: Mon, 03 Nov 2025 16:11:12 GMT

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Paramtents

Rated Input Voltage 3PH ~ 400V ±15%
Rated Output 500A/30V
Open Circuit Voltage 70V~80V
Effiency 85%
Warranty 1 year warranty
Dimensions 960*420*900mm
Weight 70kg

Packging & Delivery

99cm x48cm x110cm
Min Order1 piece

Briefing

dc pulse tig welding machine RUGGED POWERFUL TOUGH DC TIG WELDER (PROTIG-500CT)

Detailed

/FEATURES

Quick Specs

Application:: Installation and set-up; Repair and maintenance; Metal fabrication workshops; Chemical and process industry

Processes:: DC TIG (GTAW); Stick (SMAW)

Input Power:

400CT/500CT: 400V, 3-Phase

Amperage Range:

400CT:3-400A/ 500CT:3-500A

Rated Output at 40℃ (104℉):

400CT: 400A at 26V @60% Duty Cycle

500CT: 500A at 30V @60% Duty Cycle

Weight:70kg

General View of Control Panel

STC-205Di-▏Multi-Process-Welders_03

1.Remote:used for foot pedal or Remote torch.
Local:adjusted Currents by face panel.
2.2T/4T holding mode
Spot Welding mode selection
3.Pulse ON/OFF selection.

4.Process selection.
5.ARC FORCE
HOT START
6.Memory with capacity of 10 sets parameters.
7.Function sequence

General View of Control Panel(Continued)

MASTER-TIG-350CT-400CT-500CT-▏TIG-Welders_0_07

1.Gas pre-flow time(TIG)
Absolute setting range 0.1s to 5.0s (0.1s increments).
2.Ignition current(TIG)
Percentage of the main current.
4T(HOLD)
Setting range 1% to 100%(1% increments).
3.Up-slope time(TIG)
Setting ranges:0.00s to 20.0s(0.1s increments).
The up-slope time can be set separately
for non-latched and latched.
4.Main current(TIG)/pulse cuttent
I min to max(1 A increments)
Main cuttent(MMA)
I min to I max(1 A increments)
5.Pulse time
Pulse time setting range:0.01s to 9.99s(0.01s increments)
TIG pulses
The pulse time applies to
the main cuttent phase(AMP) for pulses.
TIG AC Special
The pulse time applies to the AC phase for AC special.

6.Pulse break time
Pulse break setting range:0.01s to 9.99s
(0.01s increments).
TIG pulses
The pulse break time applies to the secondary
current phase(AMP%).
TIG AC Special
The pulse time applies to the AC phase for AC special.
7.Secondary current(TIG)/pulse pulse pause current
Setting range 1% to 100% (1% increments).
Percentage of the main current.
8.Down-slope time(TIG)
0.00s to 20.0s (0.1s increments).
The down-slope time can be set separately
for non-latched and latched.
9.End-crater current(TIG)
Setting range 1% to 100%(1% increments).
Percentage of the main current.
10.Gas post-flow time(TIG)
Setting ranges:0.1s to 20.0s(0.1s increments).

DC TIG-Pulse

High Speed DC TIG-Pulse Controls
• PPS Pulses per second (Hz):DC = 0.1 – 5,000 PPS
• % ON – % Peak Time:5 - 95% (Controls the amount of time during each pulse cycle at the PEAK amperage.)
• Background Amps:5 – 99% (Sets the low-pulse amperage value as a % of the Peak Amps.)

CONVENTIONAL PULSED TIG

HIGH SPEED PULSED TIG

Typically from 1 to 10 PPS. Provides a heating and
cooling effecton the weld puddle and can reduce
distortion by lowering the average amperage. This
heating and cooling effect also produces adistinct
ripple pattern in the weld bead. The relationship
between pulse frequency and travel speed determines
the distance between the ripples. Slow pulsing can
also be coordinated with filler metal addition and
can increase overall control of the weld puddle.

MASTER-TIG-350CT-400CT-500CT-▏TIG-Welders_0_35

In excess of 40 PPS, Pulsed TIG becomes more
audible than visible—causing increased puddle
agitation for a better as-welded microstructure.

Pulsing the weld current at high speeds — between
a high Peak and a low Background amperage —
can also constrict and focus the arc.This results in
maximum arc stability, increased penetration and
increased travel speeds(Common Range:100–500

PPS).The Arc-Sharpening effects of high speed
pulsing are expanded to new dimensions. The ability
to pulse at 5,000 PPS further enhances arc stability
and concentration potential — which is are required.

Hot Start

Hot start function reliably ignites the electrode and melts
perfectly to ensure the best quality even at the start of
the seam. This solution makes lack of fusion and cold weldsa thing of the past and significantly reduces weld reinforcement.
Adjust the hot start current here and the time here.

PROTIG-350CT-400CT-500CT-▏TIG-Welders_03

Arcforce correction (welding characteristics)

PROTIG-200Di-250Di-▏TIG-Welders_11

During the welding process, arcforce prevents the electrode sticking in the weld pool with increases in current.
This makes it easier to weld large-drop melting electrode types at low current strengths with a short arc in particular.

2T/4T

Non-latched mode

PROTIG-350CT-400CT-500CT-▏TIG-Welders_07

1st cycle:
• Press and hold torch trigger 1.
• The gas pre-flow time elapses.
• HF ignition pulses jump from the electrode to the workpiece,the arc ignites.
• The welding current flows and immediately assumes the value set for the ignition current Istart.
• HF is switched off.
• The welding current increases in the set up-slope time to the main current AMP.
Switching from main current AMP to secondary current AMP%:
Press torch trigger 2 or Tap torch trigger 1
2nd cycle:
• Release torch trigger 1.
• The main current decreases in the set down-slope time to the end-crater current Iend (minimum current).
If torch trigger 1 is pressed during the down-slope time,
the welding current increases again to the set main current AMP.
• The main current reaches the end-crater current Iend, the arc extinguishes.
• The set gas post-flow time elapses.

Latched mode

PROTIG-350CT-400CT-500CT-▏TIG-Welders_10

Step 1
• Press torch trigger 1, the gas pre-flow time elapses.
• HF ignition pulses jump from the electrode to the workpiece, the arc ignites.
• Welding current flows and immediately assumes the ignition current value set
(search arc at minimum setting). HF is switched off.
Step 2
• Release torch trigger 1.
• The welding current increases with the set up-slope time to the main current AMP.
Switching from main current AMP to secondary current AMP%:
Press torch trigger 2 or Tap torch trigger 1
Step 3
• Press torch trigger 1.
• The main current decreases in the set down-slope time to the end-crater current Iend (minimum current).
Step 4
• Release torch trigger 1, the arc extinguishes.
• The set gas post-flow time begins.
Immediate termination of the welding process in the downslope by releasing torch trigger 1.

/SPECIFICATIONS

Technical specifications

Item No		PROTIG-400CT	PROTIG-500CT
Rated Input Voltage		3PH ~ 400V ±15%	3PH ~ 400V ±15%
Max. Load Power Capacity		TIG: 14.39 KVA	TIG: 20.76 KVA
		MMA: 14.21 KVA	MMA: 19.93 KVA
Rated Duty Cycle(40℃) 60%		TIG: 400A/26V	TIG: 500A/30V
		MMA: 315A/32.6V	MMA: 400A/36V
100%		TIG: 315A/22.6V	TIG: 400A/36V
		MMA: 250A/30V	MMA: 315A/32.6V
Welding Current/Voltage Range		TIG:5A/10.1V~400A/26V	TIG:20A/10.1V~500A/30V
		MMA: 20A/20.8V~315A/32.6V	MMA: 20A/20.8V~400A/36V
Open Circuit Voltage		70V~80V	70V ~80V
Power Factor		0.85	0.85
Efficiency		85%	85%
TIG	Pulse Frequency	0.2Hz~200Hz	0.2Hz~200Hz
	Pulse Width (Ratio)	1~100%	1~100%
	Arc-starting Current	5A~400A	5A~160A
	Crater-filling Current	5A~400A	5A~500A
	Current Up-slope Time	0.1S~15S	0.1S~15S
	Current Down-slop Time	0.1S-15S	0.1S-15S
	Pre-Gas Time	0.1S-15S	0.1S-15S
	Flow-Gas Time	0.1S-15S	0.1S-15S
	Spot Arc Time	0.1S-10S	0.1S-10S
MMA	Arc Force	10A~315A	10A~400A
	Hot Start Time	0.1-3S	0.1-3S
	Hot Start Current	10A~315A	10A~400A
Dimension (LxWxH)		960X420X900mm	960X420X900mm
Weight (KG)		70 KG	70 KG

Water-cooling Unit: WC-100

Operating Voltage	230V 50/60Hz
Rated Power	260W
Cooling Power	1.5KW(1L/MIN)
Maximum Pressure	0.3MPA/60HZ
Recommended Cooling Liquid	20%~40% ethanol/water
Tank Volume	6.5L

/ACCESSORIES
For Standard accessories
TIG torch:TIG-18
Electrode holder with cable 2M
Water-cooling unit: WC-150
For Optional accessories
Argon gas regular
Foot Pedal
TIG torch: TIG-26
Trolley:WT-150
Hand-hold Remote TIG torch
/RESOURCES
/DOCUMENTS
Protig-400CT/500CT