Static Frequency converters (SFC) 50Hz, 60Hz, 400Hz, 10 – 400kW
Static frequency Converter, Sojitech SFC seires, are outcome of a long experience both in UPS and in frequency converter field. We are committed to offering the best power solutions to our clients ensuring high quality and efficiency, secure electrical power supplies with the latest technology.
SOJI FC Static Frequency Converters (static or Solid-state) series guarantees a supply free of disturbances and of high quality, with maximum reliability. The use of high frequency pulse width modulation (PWM) ensures exceptional performance and extremely quiet operation. A 4 quadrant Power Factor Corrected RECTIFIER guarantees lower input currents, reduced harmonics (THDi <5%) and the capability to handle any type of load including regenerative ones.
Specific communications and specialized enclosures may be developed for custom products.
Principles Of Working
A rectifier transforms the AC voltage into a continuous stabilized DC link voltage, to power the IGBT inverter that transforms the continuous voltage into a 50Hz, 60Hz or 400Hz alternating sinusoidal stabilized voltage with a PWM modulation. The output inverter voltage feeds a transformer which on its output have the filter capacitors. The output voltage is sinusoidal with a distortion of 3%. The output has an electronic stabilization both in voltage and in frequency.
– High efficiency up to 95%
– High frequency IGBT Technology
– Online Double Conversion with Sine-wave output
– Galvanic Isolation of Inverter via Inv. transformer
– Power Factor Correction
– 4 Quadrant Operation
– Monitoring and Display controlled by Microprocessor
– Front Access for maintenance
– Robust design for industrial applications
Optionals:
– Monitoring by Web and SNMP (NetAgent)
– IP20, IP42, IP54 and/or stainless steel enclosure
– Drop line compensation
– Additional 28VDC module output
– Parallel version
– Low-tension distribution board
| TECHNICAL SPECIFICATION | |
| Unit | Static Frequency Converter 50Hz, 60Hz, 400Hz |
| INPUT | |
| Nominal voltage | 400/415VAC 3Ph |
| Voltage tolerance | ± 15% |
| Nominal frequency | 50Hz , 60Hz ±5% |
| Input current harmonics | < 5% at full load (sinusoidal) |
| OUTPUT | |
| Voltage | 200V/400V/415VAC 3-Phase *
or 230V/240VAC 1-phase * |
| Frequency | 50Hz/ 60Hz/ 400Hz ± 1% |
| Waveform | Sinusoidal |
| Overall Efficiency | 87% – 95% |
| Max crest max | 3 : 1 |
| RECTIFIER | |
| AC Voltage Range | -25% – +10% |
| Efficiency | 95% – 98% |
| Input Frequency Deviation | ± 5% |
| Overload capacity | 120% continuous |
| Current walk in | 5 seconds to maximum |
| Overall current limits | 120% |
| Short Circuit Proof | Standard |
| INVERTER | |
| Static regulation 0 -100% load | ±1% |
| Dynamic regulation 100% | ±5%, recovering to 1% within 40 millisecond |
| Total harmonic distortion | < 3% linear load |
| Overload | 120% for 60s, 150% for 5s, 200% for 2s |
| Frequency stability | ±0.01% Crystal controlled |
| Load power factor | 0.7 – 1 |
| Efficiency | 95% – 97% |
| ENVIRONMENTAL CONDITIONS | |
| Temperature range at sea level | 0 – 400C (full load)
300C at 2000m (full load) |
| HUMIDITY | |
| Recommended | 40% – 60% |
| Extreme | 90% |
| Noise level | < 65dbA at 1meter |
| Altitude | Up to 2500m |
| DIMENSION (WxDxH) mm | |
| Capacity: 10 – 30kW | 530 x 750 x 990 |
| Capacity: 40 – 120kW | 710 x 800 x 1400 |
| Capacity: 150 – 400kW | 1600 x 1000 x 2000 |
| COMMUNICATIONS | |
| Ethernet connection | Standard with NetAgent |
| CAN (with Remote Panel) | Optional |
| Power rating | 10kW – 15kW – 20kW – 25kW – 30kW – 40kW – 50kW – 60kW – 80kW – 100kW – 120kW – 150kW – 200kW – 250kW – 300kW – 400kW |