FRENIC4600FM6e medium-voltage frequency converter 3–11 kV, 450–18 300 kVA
FRENIC4600FM6e is a series of medium-voltage frequency converters of 3–11 kV for direct speed control of high-voltage induction and synchronous motors without an output transformer. Rating from 450 to 18 300 kVA. Used for energy saving on fans and pumps, and also to drive blowers, extruders and other machines.
- Input/output voltage
- 3.0/3.3 kV; 4.16 kV; 6.0/6.6 kV; 10 kV; 11 kV
- Rating
- 3 kV — 500–5500 kVA; 4 kV — 700–3200 kVA; 6 kV — 450–11 000 kVA; 10 kV — 500–16 500 kVA; 11 kV — 625–18 300 kVA
- Topology
- multilevel, series connection of cells (6 kV — 15 cells, 10 kV — 24 cells), without an output transformer
- Output frequency
- 0–72 Hz (option up to 120 Hz)
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
The converter consists of an input multi-winding transformer and inverter cells. Each cell is a single-phase two-level inverter with an output voltage of 693 V. With a cascade connection of five cells per phase, a 6 kV class voltage is obtained (15 cells), and with eight cells, a 10 kV class voltage (24 cells). In the 10 kV class the output voltage changes in 17 steps, which reduces overvoltages at the motor terminals.
The series is produced for the classes 3/3.3 kV (500–5500 kVA), 4.16 kV (700–3200 kVA), 6/6.6 kV (450–11 000 kVA), 10 kV (500–16 500 kVA) and 11 kV (625–18 300 kVA). Versions according to JIS/JEM/JEC and according to IEC are available. The output frequency is 0–72 Hz, up to 120 Hz as an option, and the overload capability is 110 % for 60 s.
A multi-pulse diode rectifier (18–54 pulses) sharply reduces current harmonics in the grid without external filters and compensating capacitors. The grid power factor exceeds 0.95, and the overall efficiency with the input transformer is about 97 %. The proprietary multilevel PWM forms an almost sinusoidal output current, so torque ripple and additional losses in the motor are minimal. The converter can be used with existing standard motors without derating them.
Cooling is forced air, with fans on the cabinet roof, and no cooling water is needed. The degree of protection is IP20, up to IP42 as an option, and the ambient temperature is 0…+40 °C. The converter provides an intelligent cell bypass in case of failure (the failed cell is shunted within 0.5 s), multi-level fault signaling, a bypass-to-grid function, automatic restart after a short loss of supply with speed search, a touch-screen LCD panel and open interfaces. Each cell can be withdrawn separately, which simplifies maintenance.
The catalog gives an example of savings. A cooling tower fan with a 600 kW motor and annual operation of 8500 h reduces consumption from 4.26 to 2.12 million kWh per year. The series is also suitable to drive pumps and draft fans of thermal power plants at 6–10 kV.
Technical specifications
| Input/output voltage | 3.0/3.3 kV; 4.16 kV; 6.0/6.6 kV; 10 kV; 11 kV |
|---|---|
| Rating | 3 kV — 500–5500 kVA; 4 kV — 700–3200 kVA; 6 kV — 450–11 000 kVA; 10 kV — 500–16 500 kVA; 11 kV — 625–18 300 kVA |
| Topology | multilevel, series connection of cells (6 kV — 15 cells, 10 kV — 24 cells), without an output transformer |
| Output frequency | 0–72 Hz (option up to 120 Hz) |
| Overload | 110 % for 60 s |
| Efficiency | about 97 % (including the input transformer) |
| Grid power factor | above 0.95 |
| Rectifier | multi-pulse diode (18–54 pulses) |
| Cooling / protection | forced air, fans on the roof; IP20 (option up to IP42) |
| Standards | JIS, JEM, JEC; IEC version (also GB, DL) |
Request a price and lead time
FRENIC4600FM6e medium-voltage frequency converter 3–11 kV, 450–18 300 kVA. We reply within one business day.
Or email sales@usk.ua or call 044 339-50-20.
Questions and answers
For what voltage and rating classes is FRENIC4600FM6e produced?
Classes 3/3.3 kV (500–5500 kVA), 4.16 kV (700–3200 kVA), 6/6.6 kV (450–11 000 kVA), 10 kV (500–16 500 kVA) and 11 kV (625–18 300 kVA).
Are harmonic filters and an output transformer needed?
No. A multi-pulse diode rectifier of 18–54 pulses reduces harmonics without external filters, and there is no output transformer. The grid power factor is above 0.95.
What are the output frequency, overload and degree of protection?
Output frequency 0–72 Hz, up to 120 Hz as an option, overload 110 % for 60 s. Degree of protection IP20, up to IP42 as an option.
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