K1387-6 - Idealarc DC-1000 Industrial Subarc and MIG Welder 415V

Technical Analysis: Idealarc DC-1000 (K1387-6)

The Idealarc DC-1000 (K1387-6) is a three-phase, DC constant voltage/constant current (CV/CC) power source designed specifically for high-deposition industrial applications. It is widely recognized as the benchmark for automatic submerged arc welding (SAW) systems. This specific model is configured for 415V input, making it suitable for international markets utilizing this voltage standard. The machine delivers a rated output of 1000 Amps at 44 Volts with a 100% duty cycle, ensuring continuous operation in automated setups without thermal shutdown risks. The solid-state SCR rectifier design provides a smooth DC output, essential for consistent bead profile and penetration in critical structural welds.

Advanced Output Control and Connectivity

Operators and technicians will appreciate the versatility of the output connections. The primary studs deliver the full 1000A+ range for heavy gouging (up to 5/8" carbons) and large diameter submerged arc wires. A secondary 500A solid-state output terminal is available to optimize arc stability for MIG and Flux-Cored processes using smaller diameter wires, effectively bridging the gap between heavy-duty and general-purpose fabrication needs. The unit features a terminal strip for easy integration with remote controls and wire feeders, such as the Lincoln NA-3, NA-5, and LT-7 automatic tractors. The single-range potentiometer simplifies process setup, eliminating the need to switch between high and low ranges.

Maintenance and Durability

The internal architecture of the DC-1000 is designed for longevity and ease of service. The transformer and rectifier assembly are convection cooled with a heavy-duty fan, and critical electronic components are potted or coated to prevent failure from conductive dust or humidity. The removable side panels allow quick access to the rectifier bridge and control boards for troubleshooting. With a weight of approximately 370 kg (820 lbs), the unit is substantial, yet its low center of gravity and stackable case design (up to two units high) allow for flexible installation in gantry systems or crowded welding cells.