Created on 08.02

180KVA Medium Frequency Inverter Resistance Welder: High Precision & Efficiency

Resistance Welders

The 180KVA Medium Frequency Inverter Resistance Welder represents the cutting edge of industrial welding technology, offering unparalleled performance compared to conventional line-frequency AC welding machines. Designed for demanding manufacturing environments, this advanced system delivers superior precision, energy efficiency, and adaptability.

Unmatched Performance & Grid Efficiency

Unlike traditional controllers that suffer from low power factors and long 20ms adjustment cycles, the 180KVA medium-frequency inverter controller operates at frequencies up to 400Hz with an adjustment time as short as 1ms. By utilizing three-phase 380V full-wave rectification, it achieves a power factor of over 90%, ensuring balanced grid utilization and eliminating the grid pollution associated with single-phase AC machines.

Precision DC Power Control

The system outputs a pure DC welding current with no zero-crossing, resulting in highly concentrated heat and minimal heat loss. This precise control is unaffected by grid voltage fluctuations, significantly reducing spatter and extending electrode life. Furthermore, secondary circuit inductance has virtually no effect on the welding current, eliminating secondary loop losses and ensuring consistent weld quality.

Advanced Controller Features

Equipped with a 7-inch industrial touch screen, the controller offers intuitive parameter setting and real-time monitoring of welding current and capacitor voltage. Key features include:
Multi-Mode Control: Supports primary/secondary constant current, constant conduction angle, and hybrid control with an accuracy of 5‰.
Programmable Heating: Three-stage heating process (preheating, welding, tempering) with custom ramp-up/ramp-down capabilities.
Weld Quality Judgment: Real-time feedback and alarm recording for comprehensive quality traceability.
Smart Connectivity: RS485 communication and programmable I/O ports for seamless integration with PLCs and robotic systems.

Comprehensive Technical Specifications

The IAW Series 180KVA controller (Model IAW-1800) is engineered for heavy-duty applications:
Input Power: Three-phase 380V (50/60Hz ±1%)
Max Output Current: 2000A (Secondary no-load voltage: 13.5V)
Matching Transformer: 300KVA (capable of supporting 180KVA continuous duty)
Inverter Frequency: 15-400 Hz
Cooling Requirement: 12L/min, ≥0.15MPa, ≤40℃
Storage Capacity: 32 sets of welding specifications (expandable to 256)

Broad Industrial Applications

With its exceptional control accuracy and stable DC output, the 180KVA medium-frequency inverter welder is ideal for welding coated steels, galvanized sheets, stainless steel, aluminum, and dissimilar metals. It is widely adopted in automotive manufacturing, steel structure fabrication, and precision electronics assembly where weld integrity and production efficiency are paramount.