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OPERATION

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PRODUCT DESIGN APPLICATION

The IDEALARC™ AC-1500 is an upgraded design with the following additional features:

• Higher output current and duty cycle capabilities.

It is a single phase transformer-saturable reactor type power supply intended for use primarily in automatic or semiautomatic variable voltage AC welding applica- tions. It can be used to supply one automatic welder head or two units may be used in Scott connection to provide two phase power to two welder heads in tan- dem. The welder can be used as is with NA-4 heads or modified with available options to supply the earlier NA-4 or LAF-4, and LT-34 welding heads.

WARNING

Pipe Thawing with an arc welder can cause fire, explosion, damage to electric wiring or to the arc welder if done improperly. The use of an arc welder for pipe thawing is not approved by the CSA, nor is it recommended or supported by Lincoln Electric.

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SETTING THE MACHINE OUTPUT OR REMOTE CONTROL

The output can be controlled either from the AC-1500, the wire feeder or other remote locations.

To adjust the current from the wire feeder or other remote locations, set the toggle switch on the front of the AC-1500 to ‘Output Control Remote’. To adjust the output current from the AC-1500, set this switch to ‘Output Control at AC-1500’.

SETTING THE OUTPUT CURRENT

Start the AC-1500 using the line disconnect switch or breaker installed with the input wiring. The red pilot light on the front panel indicates when the welder is on.

Adjust the output current from minimum to maximum within the range set by the output stud connections using either the ‘Output Control’ rheostat on the AC- 1500 (toggle switch set to ‘Local Control’) or the wire feeder or other remote rheostat (toggle switch set to ‘Remote Control’).

PRODUCT DESCRIPTION

Specifications are 50 Hz, 380 volt unit with a Power factor correction as a standard feature.

Output terminals, control power terminal strip, and controls are recessed or hinged covered to affect a "dead front". Due to the excessive amount of stray magnetic flux developed by the saturable reactor, the center sections of the welder side panels are made of

ahigh impact, self-extinguishing, chemical resistant plastic material. USE OF METALLIC PANELS IN THEIR PLACE WILL RESULT IN EXCESSIVE HEAT- ING OF THE PANELS AS WELL AS THE SHEET METAL SCREWS USED IN THE ASSEMBLY OF OTHER CASE PARTS.

Output welding current is available in three overlap- ping ranges by means of externally connecting the electrode cables to the Min., Med., or Max. tap elec- trode studs(See Technical Specifications in the Installation Section).

Input Line Voltage Compensation maintains a rea- sonably constant output within a range of ±10% change in supply line voltage.

Cooling of the welder is accomplished by drawing air in through the louvered case front panel, through the reactor and transformer assemblies, and out the lou- vered case rear panel. The two totally enclosed fan motors used have sealed ball bearings and require no lubrication maintenance.

Handling of the welder and any attached devices should be done with a fork-lift or pallet-jack capable of loads exceeding the combined weight of the system.

Overload/Thermal Protection is provided in three areas: the 115 volt AC auxiliary power is fused for 8 amps; the saturable reactor control power circuit is protected by a 40 amp fuse; the welder output power circuit is protected by the familiar current transformer- Klixon thermostat breaker. In the event of a control cir- cuit or welder overload, the output contactors will open and the fan motors will continue to operate. If the overload is detected by the thermostatic breaker, the temperature light located on the front panel will illuminate until a safe operating temperature is reached.

Output Contactor control is provided by two S78 contactors connected in parallel. Input line contactors are not provided. The customer is expected to provide line starting and circuit breaking equipment.

IDEALARC™ AC-1500

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Lincoln Electric AC-1500 manual Product Design Application

AC-1500 specifications

The Lincoln Electric AC-1500 is a versatile and innovative arc welding machine that has garnered attention for its reliability and performance in various industrial applications. Designed to provide powerful welding capabilities, the AC-1500 is particularly beneficial for both professionals and hobbyists who require a robust and efficient welding solution.

One of the standout features of the Lincoln Electric AC-1500 is its capability to produce alternating current (AC) welding. This technology is ideal for welding a variety of materials, including aluminum and magnesium, which can be challenging with conventional direct current (DC) welders. The AC output allows for a smooth arc and a stable weld process, resulting in high-quality welds and minimal spatter.

The AC-1500 is equipped with a user-friendly control panel that simplifies the welding process. It offers adjustable amperage settings, enabling users to fine-tune the output to match specific materials and thicknesses. This versatility ensures excellent penetration and control over the welding process, making it suitable for various projects, from automotive repairs to constructing metal fabrications.

Another key characteristic of the AC-1500 is its portability. Weighing in at a manageable level, it features built-in handles that facilitate easy transportation between job sites. This design is particularly advantageous for welders who often move their equipment, providing convenience without sacrificing performance.

Durability is a hallmark of the Lincoln Electric AC-1500. The machine is built with high-quality materials that withstand the rigors of industrial environments. Its robust construction ensures a long service life, reducing the need for frequent repairs or replacements. Additionally, the AC-1500 is designed with safety features, including thermal overload protection that prevents overheating, ensuring that the welder can work efficiently without concern for equipment malfunction.

In terms of technologies, the AC-1500 incorporates advanced circuits that enhance the stability of the arc, even in difficult welding positions. This technology is critical in achieving consistent results, particularly when welding in challenging conditions.

In conclusion, the Lincoln Electric AC-1500 is a powerful, reliable, and user-friendly arc welding machine. Its AC welding capabilities, adjustable amperage, portability, and robust design make it an excellent choice for a wide range of welding applications. Whether used in a professional setting or by enthusiastic DIY welders, the AC-1500 delivers superior performance that meets the demands of modern welding tasks.