FREQUENCY CONVERTER SYSTEM UNITS
Static (solid state) frequency converters convert AC electrical power of one frequency into AC electrical power of another frequency.
To realize high efficiency, great manageability and energy saving in industrial induction motor related applications, it is necessary to adopt controllable frequency converter systems.
The power conversion process isolates the critical load from the normal mains disturbances and isolates the mains from load induced reflected harmonics affecting other loads connected to the input mains feeder. The rectifier converts AC power into DC to provide the necessary DC for continuously rated capacity of the inverter. IGBT semiconductor modules are used in PWM inverter and the control logic creates the precise sinusoidal output waveform with a very low harmonic content. Thyristor semiconductor modules are also used in rectifier for reliable operation.
The system consists of rectifier, inverter, output isolation transforme, controls and monitoring. The AC output of the inverter is connected to the critical load,
- Microprocessor Based Control
- Low Noise Level with 16 kHz Switching Frequency
- Controlled DC Bus which be able to connect batteries
- High reliability in Non Linear Loads with 6 module IGBT
- High Frequency Switching IGBT İnverter
- Full Bridge Thyristor Module Rectifier
- Pure Sine Wave Shape
- LCD Screen
- Low Noise Level with Smart Fan System
- Online Double Conversion System
- Crest Factor bigger than 3:1
- Galvanic Output Isolation Transformer
- Input Harmonic Filter
- %15 Input Voltage Tolerance
- %5 Input Frequency Tolerance
- Over Voltage, Over Load, Short Circuit, Over Heat Electronic Protection
- RS485 Communication Equipment
- MODBUS Based Communication Option on Network
- Computer User Interface
- Remote Monitoring, Parameter Setting and Backward Event Log Memory
| GENERAL | |
|---|---|
| Model | FK Series |
| Topology | Double Conversion Online System |
| Control | Microprocessor Controlled System |
| RECTIFIER | |
| Topology | Full Bridge Phase Angle Controlled Thyristor Module Rectifier |
| Control | Microprocessor Controlled System |
| Nominal Input Voltage | 110 VAC / 220 VAC / 230 VAC / 240 VAC / 380 VAC / 400 VAC / 415 VAC / 480 VAC ±15% |
| Nominal Input Frequency | 50 hz. ±5% or 60 hz. ±5% |
| Input Cosφ | ≥ 0.8 Inductive |
| Nominal DC Voltage | 110 VDC / 125 VDC / 144 VDC / 220 VDC / 264 VDC / 360 VDC |
| Static Tolerance | <1% |
| Output Voltage Ripple RMS | <1% (at full load) |
| Protections | Thermic‐Magnetic Over Current Protection, Over Voltage Protection, EMI‐RFI Filter |
| INVERTER | |
| Topology | 3 Full Bridge 6 high Frequency IGBT Inverter Modules (3 Phase); 1 Full Bridge 2 high Frequency IGBT Inverter Modules (1 Phase) |
| Isolation Transformer | Galvanically Isolated (standard) |
| Power Factor | 0.8 |
| Nominal Input Voltage | 110 VDC / 125 VDC / 144 VDC / 220 VDC / 264 VDC / 360 VDC +/-15% |
| Nominal Output Voltage | 110 VAC / 220 VAC / 230 VAC / 240 VAC / 380 VAC / 400 VAC / 415 VAC / 480 VAC |
| Voltage Tolerance | |
| static | ± 1% |
| dynamic with 100% load change | ± 10% in 50 msec. |
| Overload | |
| at 125% Load | 10 minutes |
| at 150% Load | 1 minute |
| Waveform | Pure Sinusoidal |
| Total harmonic Distortion (ThDv) | |
| at Linear Load | < 3% |
| at Non-Linear Load | < 8% |
| Crest Factor | 3 : 1 (at full load) |
| Nominal Output Frequency | 50Hz or 60Hz |
| Short-circuit behaviour: | 3 x Nominal Output Current |
| Protection | Short Circuit, Over Current, Over Voltage and Over Heat Electronic Protection |
| LCD FRONT PANEL | |
| Indicators and Buttons | 2 x 16 LCD Panel, Menu Selection and Parameter Setting Buttons |
| Warning Messages | Input Fuse/DC Voltage High‐Low /Over Load/Device Over Heat/Inverter Over Heat /Inverter SCR Fuse/Output Low‐High |
| Monitoring | Output Voltage/Output Frequency/Inverter Load Percentage/DC Bus Voltage/ Device Temperature / Event History |
| Adjustable Parameters | DC Bus Cut‐off Voltage /Output Voltage/Date/Time /Alarm ON‐OFF / Communication Address Value |
| Sound Alarm | On Warning Messages 2 Short ‘beep’ per 2 seconds |
| Communication | Events are displayed on time base. Last 256 events recorded and displayed on front panel and on PC via RS 282 and RS 485 |
| SAFETY & ENVIRONMENT | |
| Over Voltage Protection | IEEE 587 4500 A, 110 Joules (standard) / 40kA Surge Arrestor (OPTIONAL) |
| Electrical Interference Reduction | FCC Part 15 Class B |
| Electrical Standards | EN 50091-1 (Security) / EN 50091-2 (EMC) |
| Protection Level / Color | IP 20 / RAL 7035 (Standard), (Higher IP rating and different colors are available, please consult) |
| MTBF | 100,000 hrs. |
| Enclosure Material | Mild Steel, Zinc-phosphate coated; 100 µm electrostatic paint; 1.5 mm thickness |
| Cooling | Forced Fan (Standard) / Natural (OPTIONAL) |
| Cable Entry | Bottom (Standard) / Top (OPTIONAL) |
| Operating Temperature | -10 / +40 °C. (Higher operating temperatures are available, please consult) |
| Relative humidity | 5 - 90 % |
| Operating Altitude | Max. 1000 Mt. (Higher altitudes requires de-rating, please consult) |
| Noise Level | Max. 60 db |