Power Supplies

High precision welding power supplies for the most demanding applications
 

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PWT's GTA (TIG) and plasma welding power supplies may be used in aerospace, semiconductor, vacuum processing, medical, nuclear, and other industries where precise, low heat input welding is required. Our units may be configured for manual or automated applications. We can provide a complete power supply solution with a current source, arc starter, pilot supply (for plasma welding), and welding programming console all in one attractive enclosure - or provide separate stand-alone modules which can be integrated to your existing welding equipment.

• Current Sources
• Arc Starters
• Pilot Supplies
• Programming Consoles

 Current Sources

PWT's current source technology allows the user to produce superior welds on numerous applications, including those difficult-to-weld alloys. The CC200 unit delivers precise, repeatable control at low amperages for welding thin cross-section material.

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200 DC amp continuous operation (400 amp models can be provided) Low current ripple - less than one percent within 1 millisecond after steady state is reached Pure, clean output for superior welding quality Computer control interface for automated operation Welding current values programmable over a range from 1 to 200 amperes in increments of 0.1 amps Millisecond rise times Pulsation capabilities Programming of the weld current accomplished by a user supplied computer system that utilizes a 0 to  10VDC signal Accuracy of output current maintained within +/- 1% or +/- 0.5 amperes, whichever is greater, of the  programmed current Proven, hi-tech transistor technology Modular expandability for future growth Built sturdy and reliably GTAW system may be converted to a PAW system

Specifications: Power 3 KW (8 KW option) Duty Cycle 100% @ 200 amps Amperage Range 1.0-200 amps Voltage Input 120VAC, 220VAC, & 440VAC Frequency/ Phase 50-60 cycle, single phase Coolant Air-cooled, self contained Dimensions 19 in (48 cm) W x 24 in (61 cm) D x 8.75 in (22 cm) H Weight 50 lbs (23 kg)

 Arc Starters

PWT's arc starter operates by high voltage capacitive discharge. The unit is "Computer Friendly", i.e., there is no high frequency noise to interfere with sensitive computers.

(select to see larger image)	Can be supplied as a "stand-alone" with an optional enclosure, or integrated into any DC power supply Models are available for power supply ratings of 200, 400, or 600 DC amps continuous operation Does not cause electrical disturbances in the servo, wirefeed, or gas systems in automated welding equipment
Specifications: Voltage Input 440VAC standard; 120VAC stand-alone Frequency/Phase 50-60 cycle, single phase Output Connections 2/0 or 4/0 Cables Dimensions 19 in (48 cm) W x 17 in (43 cm) D x 5.25 in (13 cm) H Weight 18 lbs (8 kg)

 PL030 Pilot Supply

PWT's current source technology is transferred to its plasma arc welding pilot supply. The latest technology transistors allows the user to generate a clean, stable pilot arc for plasma arc welding (PAW) or micro-plasma arc welding (M-PAW).
 

(select to see larger image)	Current values are manually selected, ranging from 1 to 30 amperes in increments of 1 amperes An external 24VDC signal from the user supplied computer system can enable the pilot supply "Dry contact" relay signal to notify the computer that the arc is established
Specifications: Power 1.5 KW Duty Cycle 100% @ 30 amps Amperage Range 1.0-30 amps Voltage Input 120VAC, 220VAC, & 440VAC Frequency/Phase 50-60 cycle, single phase (three phase option) Coolant (self contained) Air-cooled system of adequate capacity Dimensions 19 in (48 cm) W x 17 in (43 cm) D x 8.75 in (22 cm) H Weight 35 lbs (16 kg)

 Programming Consoles

The welding programming console will allow the user to store welding programs for repeatable execution of welding parameters. The user can select a program individualized with preflows, postflows, welding current, upslopes, downslopes, etc., for different applications.

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Universal welding programming console may be used for manual or automated welding Programmable current, preflow, postflow, slopes, and pulsation Can be integrated to motion devices Four each analog input and output channels Stores up to 12 weld programs Standard keypad interface with programming display of two lines, 20 characters Five function keys with LED status indicator lights Touch screen interface optional

Specifications: Voltage Input 120VAC  Frequency/Phase 50-60 cycle, single phase Dimensions 19 in (48 cm) W x 17 in (43 cm) D x 5.25 in (13 cm) H Weight 15 lbs (7 kg)

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