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MCC 101 Sine filters
Sine filters are output filters that attenuate voltage components associated with switching frequency. This improves the line-to-line voltage by ensuring a proper sinusoidal waveform. As a result, unwanted phenomena such as bearing currents and the negative impact of pulsed voltage on motor winding insulation are minimized, especially in motors above 50 kW.
Manufacturer’s website →
Supply voltage and power range:
| Supply voltage | Power range |
|---|---|
| 3 x 200 – 500 V AC | 2.5 – 1200 A |
| 3 x 525 – 690 V AC | 1320 A |
Information:
Enclosures
- IP00 and IP20 across the entire power range
Mounting
- Possibility of side-by-side mounting directly next to the drive (for filters up to 75 A)
- Wall mounting available for filters with rated current up to 75 A
Best solution for:
- Applications using older motors
- Environments with aggressive compounds
- Applications requiring frequent braking
- Applications with general-purpose motors supplied with 690 V
- Applications with long motor cables
Prevent disturbing pulses
A sinusoidal motor supply voltage reduces hysteresis losses in the motor, thereby lowering its temperature rise. Motor temperature has a significant impact on insulation life and durability. In this way, sine filters increase motor lifetime. As mentioned earlier, a sinusoidal supply voltage also reduces bearing current levels. This significantly decreases the risk of bearing damage, extending motor life and maintenance intervals.
Quality and design
They are designed to operate at the nominal switching frequency of frequency converters, ensuring no reduction in motor performance or efficiency. The enclosures are specially designed to match FC series drives not only in design but also in quality and functionality.
Features and benefits:
- Compatibility and suitability for operation with frequency converters in various modes (including flux and VVC+)
- Ensuring sinusoidal motor supply voltage waveform
- Elimination of overvoltages and dangerous voltage peaks
- Filter components are designed to suppress and prevent transmission of pulse interference through current to the motor
- Reduction of motor noise
- Reduction of motor losses
- For high-power applications, parallel connection of filters is possible
