AC Power Source / Frequency Converter, 10kVA to 2000kVA
Equipment built for one country's grid frequency doesn't automatically work on another's — a product designed for 60Hz operation needs to be tested (or actually powered) at 50Hz before it can be sold or deployed in a 50Hz market, and vice versa. Preen's AFC series addresses exactly this: an AC power source and frequency converter purpose-built for utility grid simulation and voltage/frequency conversion, covering standard 45-65Hz operation plus fixed 100Hz, 120Hz, 200Hz, 240Hz, or 400Hz options for export product testing and operating imported equipment on a foreign grid frequency.
Unlike some high-power AC sources that reach their top output only through paralleled modules, the AFC scales up to 2000kVA from a single chassis — a meaningful practical difference where facility space, cabling complexity, or system reliability considerations favour fewer, larger units over many smaller paralleled ones. Efficiency reaches up to 90% at maximum power, and the AFC handles 100% unbalanced three-phase loads alongside simultaneous single-phase and three-phase device operation, useful where a facility or production line runs mixed load types from the same power source.
A 10.1-inch or 7-inch touch screen (depending on model) combines with six hot-key groups for fast recall of stored voltage and frequency settings — relevant for repeat production testing where the same handful of test configurations get used repeatedly throughout a shift — alongside RS-232/RS-485 remote control for automated or software-driven operation.


| Output Phase | Single-phase (1Ø) 5-120kVA · Three-phase (3Ø) 5-640kVA |
| Output Power Range | 5kVA–2000kVA |
| Output Voltage Range | 0-155/0-310V (L-N); entry 5kVA model 5-150/10-300V (L-N) |
| Output Frequency Range | Standard: 45-65Hz · Option: 45-65Hz, 100Hz/120Hz/200Hz/240Hz/400Hz |
| Voltage Accuracy | 0.2-0.5% F.S. + 4 counts (varies by model) |
| Frequency Accuracy | ±0.02-0.1% F.S. (varies by model) |
| Total Harmonic Distortion (THD) | ≤2% (resistive load) |
| Line Regulation | <1% |
| Load Regulation | <1% (resistive load) |
| Response Time | ≤2ms |
| Efficiency | ≥80-90% at max. power (varies by model) |
| Overload Capability (Opt.) | 200% for 2s, 150% for 5s, 125% for 15s |
| Program Mode / Memories | 6 sets (M1-M6) with one-touch hot key recall |
| Protections | Input: N.F.B, Over Voltage, Under Voltage · Output: Over Voltage, Over Current, Over Temperature |
| Remote Interfaces | Standard: RS-232, RS-485 |
| HMI | Digital LED display (entry model) or 7"/10.1" touch screen |
| Operating Temperature | 0°C–45°C |
| Standout Feature — Grid Simulation | Delivers clean sine-wave AC power to simulate utility grid voltage/frequency conditions worldwide, for export product testing or operating imported equipment |
| Standout Feature — Unbalanced Load Handling | Supports 100% unbalanced three-phase loads, powering three separate single-phase devices or one three-phase device |

| Model | Power | |
|---|---|---|
| AFC-31010 | 10kVA | Enquire |
| AFC-31015 | 15kVA | Enquire |
| AFC-31030 | 30kVA | Enquire |
| AFC-31045 | 45kVA | Enquire |
| AFC-31060 | 60kVA | Enquire |
| AFC-31080 | 80kVA | Enquire |
| AFC-31100 | 100kVA | Enquire |
| AFC-31120 | 120kVA | Enquire |

| Model | Power | |
|---|---|---|
| AFC-33005 | 5kVA | Enquire |
| AFC-33010 | 10kVA | Enquire |
| AFC-33015 | 15kVA | Enquire |
| AFC-33030 | 30kVA | Enquire |
| AFC-33045 | 45kVA | Enquire |
| AFC-33060 | 60kVA | Enquire |
| AFC-33080 | 80kVA | Enquire |

| Model | Power | |
|---|---|---|
| AFC-33100 | 100kVA | Enquire |
| AFC-33120 | 120kVA | Enquire |
| AFC-33160 | 160kVA | Enquire |
| AFC-33240 | 240kVA | Enquire |
| AFC-33300 | 300kVA | Enquire |
| AFC-33400 | 400kVA | Enquire |
| AFC-33500 | 500kVA | Enquire |
| AFC-33640 | 640kVA | Enquire |