Welding Inverters

Process:

An inverter used in the welding application functions as below:

• AC Line voltage is taken as the input to the welding equipment
• It is suitably RFI/EMI filtered and rectified
• This rectified voltage is filtered to make it pure DC
• This DC voltage is taken as the input to the switching device through a high frequency power transformer
• As this switching frequency is very high the size of this transformer becomes very small compared to its counter parts
• The transformer output is suitably stepped down
• This stepped down AC voltage is again rectified using fast recovery diodes
• This output is used for welding
• Suitable controls and feedback techniques are used

Check out our Welding Inverters features, advantages, specifications, applications & scope of supply

Features:

• Used for Welding Process – Plasma Arc Welding, TIG Welding, MIG Welding, PTA Welding, Hard Banding
• Latest PWM technology using IGBTs
• Light weight & compact – 80% less weight compared to conventional machines
• Saves Power Cost – No Load Input of 0.2 Amps results in substantial savings in power cost
• Less Power Consumption – On load power consumption of 50% lesser than conventional machine
• Dynamic – Designed to work under wide voltage fluctuations protected against Over Voltage, Under Voltage, Single Phasing, and Over Heating with Indications
• In-built selectable pulsing of 1 to 10 Hz of output current
• Reliable Electrode Ignition – High OCV & controlled start current ensures reliable electrode ignition
• Spatter Free Welding – Fast regulation speed & excellent dynamic properties ensures spatter free welding performance even with difficult electrodes
• Suitable for thin Sheet Welding – Reliable start even at 3 amps in TIG without any surge in welding current makes it suitable for thin sheet welding
• Standard inbuilt HF with fully fledged pulsing models
• Heavy Duty and Standard models available

Advantage of Welding Inverter over Welding Transformer and Welding Rectifier:

Parameter	Welding Transformer	Welding Rectifier	Welding Inverter
No Load Current	4 to 5 A	4 to 5 A	0.3 to 0.5 A
No Load Power Factor	0.2	0.2	0.99
No Load Power	400 to 500 W	400 to 500 W	50 to 100 W
Output Power	3.84KW	3.84KW	3.84KW
Efficiency	0.6	0.6	0.9
Input Power	6.4 KW	6.4 KW	4.27 KW
Input Power Factor	0.5 to 0.6	0.6	0.95
Input KVA	12.8  to 10.66 at 230V,1ph	10.66  at 415V, 3 ph	4.5 at 415V, 3 ph
Input Current	55 A to 46 A	14.8 A	6.3 A

Specifications

Specifications:

Power Source with scratch / touch start

Parameter	POWER 160	POWER 200	POWER 220	POWER 300	POWER 400	POWER 400 MIG	POWER 600 MIG
Input
Input Supply	220 V, 1-Ø, 50 Hz	440 V, 3-Ø, 50 Hz	440 V, 3-Ø, 50 Hz	440 V, 3-Ø, 50 Hz	440 V, 3-Ø, 50 Hz	440 V, 3-Ø, 50 Hz	440 V, 3-Ø, 50 Hz
KVA	4.8	7	7	11.9	17.5	17.5	26
KW	4.4	6.4	6.4	9.2	16.7	16.7	24.7
Power Factor	0.95	0.95	0.95	0.95	0.95	0.95	0.95
Output
Max Output (Amp)	160	200	220	300	400	400	600
Current Range (Amp)	3 – 160	5 – 200	5 – 220	5 – 300	5 – 400	40 – 400	60 – 600
Current Control	Stepless	Stepless	Stepless	Stepless	Stepless	Stepless	Stepless
Duty Cycle	60%	60%	60%	60%	60%	60%	60%
Display	Amp / Volt (Digital)	Amp / Volt (Digital)	Amp / Volt (Digital)	Amp / Volt (Digital)	Amp / Volt (Digital)	Amp / Volt (Digital)	Amp / Volt (Digital)
Dynamic Arc Force	0 – 100	0 – 100	0 – 100	0 – 100	0 – 100
Additional
Class of Insulation	H	H	H	H	H	H	H
Class of Protection	IP 23	IP 23	IP 23	IP 23	IP 23	IP 23	IP 23
Cooling	Natural Air	Natural Air	Natural Air	Natural Air	Natural Air	Natural Air	Natural Air
Dimension W x L x H (mm)	195 x 390 x 430	210 x 500 x 320	210 x 500 x 320	260 x 680 x 480	340 x 570 x 670	340 x 570 x 670	395 x 1240 x 795
Weight (kg) Approx	21	21	30	51	55	55	75

Power source with HF start

Parameter	POWER 160HF	POWER 200HF	POWER 220HF	POWER 300HF	POWER 400HF
Pre Flow (sec)	1 – 10	1 – 10	1 – 10	1 – 10	1 – 10
Post Flow (sec)	1 – 10	1 – 10	1 – 10	1 – 10	1 – 10
Dimension L x W x H (mm)	195 x 390 x 430	210 x 500 x 320	210 x 500 x 320	260 x 680 x 480	340 x 570 x 670
Weight (kg) Approx	21	21	30	51	55

Power source with PULSE

Parameter	POWER 160 PULSE	POWER 200 PULSE	POWER 220 PULSE	POWER 300 PULSE	POWER 400 PULSE
Up Slope (sec)	1 – 10	1 – 10	1 – 10	1 – 10	1 – 10
Down Slope (sec)	1 – 10	1 – 10	1 – 10	1 – 10	1 – 10
Pulse Frequency (Hz)	1 – 10	1 – 10	1 – 10	1 – 10	1 – 10
Pulse Time	10 - 90%	10 - 90%	10 - 90%	10 - 90%	10 - 90%
Pre Settable Current	Yes	Yes	Yes	Yes	Yes
Dimension L x W x H (mm)	195 x 390 x 430	210 x 500 x 320	210 x 500 x 320	260 x 680 x 480	340 x 570 x 670
Weight (kg) Approx	21	21	30	51	55

Applications:

• Chemical plants equipments
• Dairy Equipments
• Food Processing Machinery
• Pharmaceutical Machinery
• Ornamental Metal Furniture
• Brewery Plants
• Kitchen & Hotel Equipments
• Hospital Equipments
• Pipeline Welding
• Structural Fabrication

Scope of Supply Includes:

• Suitable Trolley for Machine Mounting

 

Comparision in Input Power Cost

Welding Data 

• Tig Welding
  
• Stick Welding
  
• Linear welding SPM for welding tubes from 0.1mm SS sheet