The AC power frequency converter (AFC) is a variable frequency device composed of the whole circuit to constitute an AC-DC-AC-filter, which has been widely used in various industries. AFC can not only simulate and output the power grid indexes of different countries, but also provide pure and reliable sinusoidal power output with low harmonic distortion and high stability of voltage and frequency for export electrical appliance manufacturers in design, development, production, testing and other applications. AFC is very close to the ideal AC power source, which can output the grid voltage and frequency of any country.
The AC power frequency converter (AFC) of Schorch has been designed in an integrated manner, and after years of technical accumulation, we can guarantee that the delivered the AC power frequency converter(AFC) has a constant frequency during the start-up process and reliable and stable operation. It has the characteristics of strong load adaptability, good output waveform quality, good man-machine interface and simple operation, etc.
| Items | Parameter Selection | |
| Input | Input rated | 3、3.3、6、6.6、10KV(*) |
Voltage fluctuation range | Runs at full load with voltage fluctuation of ±15% | |
Frequency variation range | 50Hz±10% | |
Input current harmonics | ≤O.3% meeting standards of IEEE519-1992 and GBT14549-93 | |
| Output | Output voltage range | various voltage levels from 440V~13.8kV |
Output current | 0~1400A | |
Output capacity | 0-25MVA | |
Sine distortion rate of output voltage waveform | <3% | |
Output frequency range | 0-120Hz | |
| Control mode | Main circuit mode | Directly connected in series with HV converter |
Control mode | Vector control with/without speed sensor, V/F control | |
Overload capacity | 120% 60s | |
Current limiting protection | 150%(supporting customized design) | |
Converter efficiency | >96% | |
Protection functions | Overload, over current, abnormal output voltage (stop when deviation exceeds 30%), abnormal cooling fan, power failure detection, etc. | |
Communication function | Hard wiring(standard) Profibus-DP(*)、Modbus(*)、Ethernet(*) | |
| Cabinet structure | Cabinet structure | Made of steel plate, self-supporting locking |
Cabinet protection level | Ip54/31/20 | |
Seismic capacity (with base) | According to the 7-level shockproof design | |
Cooling method | Free cooling (Forced air cooling) | |
Cabinet color | Standard RAL7035 light grey (*) | |
| Environment | Temperature | Operating temperature: -10~40℃, storage temperature: -20~60℃ |
RH | RH:≦ 95% (without condensation at 20℃) | |
Altitude | ≤1000m(*) | |
Groung acceleration | 0.1g(*) | |
Setting place | Indoor, general environment without corrosive、flammable、explosive gas (*) | |
• Reliable and stable operation,
• Strong load adaptability,
• Good output waveform quality,
• Good man-machine interface,
• Simple operation, etc.
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The production base of Schorch Electric Co., Ltd. is located in Suining City, Sichuan Province. It adopts the advanced technologies and manufacturing techniques of Europe. The production technologies are advanced, stable and reliable.
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