Intepro Systems has partnered with Preen to bring you AC Power solutions
The AFC Series is an adjustable power source that utilizes double conversion to accept a variety of inputs and provide a fully adjustable (across operating range) clean sinusoidal output that shields your DUT from grid harmonics.
These products were designed to help customers with their end-of-line, burn-in or laboratory power needs.
The IGBT based AFC Series is available in a Single Phase (0.5-120kVA) or Three Phase (5-2000kVA) Output Model. The adjustable output voltage range is 5 - 300VL-N (8 – 520VL-L for 3 Phase Output).
The AFC also allows for custom higher voltage ranges (ex: 600VL-L) or lower voltage ranges with increased current. The AFC gives customers the ability to define their frequency range. Users can choose a specific band to work with and save cost.

Preen's AFC Series is an adjustable AC Power Source and ac power frequency converter that utilizes double conversion to accept a variety of inputs to provide a fully adjustable (across operating range) clean sinusoidal output that shields your DUT from grid harmonics. Preen engineers have designed reliable and cost-effective power products for over 35 years making the AFC Series an ideal ac power supply test equipment solution for your end-of-line, burn-in, chamber or laboratory power needs.
The IGBT based AFC Series is available in a Single Phase (0.5-120kVA) or Three Phase (5-2000kVA) Output Model. The adjustable output voltage range is 5 - 300VL-N (8 – 520VL-L for 3 Phase Output). The AFC also allows for custom higher voltage ranges (ex: 600VL-L) or lower voltage ranges with increased current. The AFC gives customers the ability to define their frequency range. Users can choose a specific band to work with and save cost.
| Type | Output Frequency Range | Applications |
|---|---|---|
| A (Standard) | 47~63Hz Adjustable, 50/60Hz Selectable | Industrial Product Testing, Production Line Power, Chamber Power, Burn-in Testing |
| B | 45~500Hz Adjustable | Laboratory Testing, Electrical Safety Test |
| C | 350~450Hz Adjustable, 400Hz | Military Stationary Power, Product Testing |
| D | 47~63Hz Adjustable, 50/60/2F/4F/400Hz selectable | Transformer Testing |
| E | 50/60Hz Selectable | Clean Power Source, Harmonics Isolation Variable Voltage Power, Frequency Conversion |
The AFC Series is one of the most scalable AC Power solutions available from a single-phase bench unit to a 2000kVA three-phase system, all from one product family. If you are looking for reliable ac power supply test equipment backed by over 35 years of Preen engineering, the AFC Series delivers.

The AFC Clean Bulk AC Source & Frequency Converter is a high-performance AC power source designed to supply clean, stable, and programmable AC power for testing, manufacturing, and R\&D applications requiring frequency conversion.
