Isotron Equipment
IHF – High Frequency Welding Inverters
The IHF ISOTRON series of high-frequency spot welding inverters stands out for featuring a built-in power transformer inside the cabinet and operating with a 10KHz switching frequency.
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About IHF
A high-frequency welding inverter uses the traditional power grid as its main energy source, converts it into direct current, and then back into alternating current in 10kHz pulses.
These pulses are switched at high voltage to the welding transformer, and once again the welding signal is converted into constant current—this time directly at the welding head.
Spot welding using a high-frequency inverter offers significant advantages in terms of energy efficiency, weld quality, precise control, and shorter cycle times.
These benefits make this technology ideal for a wide range of spot welding applications, especially in microsoldering.
Key Features
- Internal digital management with next-generation DSP;
- Internal memory for 250 welding programs, with up to two pulses each;
- Feedback control via secondary current of the welding transformer;
- Optional feedback control via voltage at the welding head electrodes;
- No need for external coil or current clamp;
- PLC integration for full control via digital I/O;
- Built-in monitor for real-time reading of current, voltage, resistance, and weld duration;
- Plus HMI interface with 5″ touchscreen display;
- User-friendly supervisory software provided, with USB cable communication;
- Single-phase 220V input for IHF-1 and IHF-3 models, and three-phase 380V input for IHF-6 model.
Products
IHF Models
IHF - 1
- 5″ color touchscreen display integrated;
- Digital management with next-generation DSP;
- Closed-loop: constant current on secondary via Hall effect transducer;
- Welding transformer integrated into the inverter unit;
- Maximum current: 1000A;
- Switching frequency: 10kHz;
- Weight: 24 kg;
- Dimensions: 450×240×320 mm (L×W×H);
IHF - 3
- 5″ color touchscreen display integrated;
- Digital management with next-generation DSP;
- Closed-loop: constant current on secondary via Hall effect transducer;
- Welding transformer integrated into the inverter unit;
- Maximum current: 3000A;
- Switching frequency: 10kHz;
- Weight: 23 kg;
- Dimensions: 450×240×320 mm (L×W×H);
IHF - 6
- HMI with color touchscreen display and digital control using DSP processor;
- Welding transformer integrated into the cabinet;
- Maximum welding current: 6kA;
- Switching frequency: 10kHz;
- Weight: 40 kg;
- Dimensions: 630×254×387 mm (L×W×H);
IHF - 1
- 5″ color touchscreen display integrated;
- Digital management with next-generation DSP;
- Closed-loop: constant current on secondary via Hall effect transducer;
- Welding transformer integrated into the inverter unit;
- Maximum current: 1000A;
- Switching frequency: 10kHz;
- Weight: 24 kg;
- Dimensions: 450×240×320 mm (L×W×H);
IHF - 3
- 5″ color touchscreen display integrated;
- Digital management with next-generation DSP;
- Closed-loop: constant current on secondary via Hall effect transducer;
- Welding transformer integrated into the inverter unit;
- Maximum current: 3000A;
- Switching frequency: 10kHz;
- Weight: 23 kg;
- Dimensions: 450×240×320 mm (L×W×H);
IHF - 6
- HMI with color touchscreen display and digital control using DSP processor;
- Welding transformer integrated into the cabinet;
- Maximum welding current: 6kA;
- Switching frequency: 10kHz;
- Weight: 40 kg;
- Dimensions: 630×254×387 mm (L×W×H);
Benefits
- Faster production cycles and increased productivity;
- Extended electrode life;
- Reduced sparking effect;
- Minimized visual marking on parts;
- Variable monitoring with programmable windows;
- Alert system for poor welds;
- Safe operation (low welding voltage levels);
- Low input phase demand and up to 35% energy savings;
- High power factor and reduced harmonic distortion;
- Welding transformer integrated into the cabinet;
- Programming HMI integrated into the cabinet;
- Feedback with exclusive Hall effect sensor;
- Ultra-fast welds with repeatability;
Key Advantages
- Welding Precision: High-frequency operation enables precise parameter control through fast feedback, resulting in consistent, high-quality welds with repeatability and minimal thermal distortion or spatter.
- Compact Design: The integrated transformer eliminates the need for external components, saving space on the production line, reducing cable and busbar use, and simplifying installation by sharing the inverter’s internal cooling system.
- Energy Efficiency: High-frequency technology offers greater performance and energy efficiency, reducing operating costs compared to conventional equipment.
- Durability and Reliability: Integrating the transformer reduces failure points such as cables and external connections, enhancing equipment robustness. Designed for demanding industrial environments, it ensures long service life and low maintenance needs.
- Application Versatility: Compatible with a wide range of materials and thicknesses, the inverter is ideal for microsoldering processes in the automotive, appliance, and metalworking industries, adapting to various spot welding needs.
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