Three-Phase Sine Wave Filter RDSF 8 – 1120

Three-phase sine wave filterRDSF 8 – 1120Three-phase sine wave filters for use with variable frequency drivesRated voltage: 3AC 400V to 3AC 690V (higher voltages available upon request)Rated current: up to 1200 A (higher currents available upon request)Frequency: 50 Hz to 60 Hz (higher frequencies available upon request)Pulse width modulation (PWM) frequencies: 1.5 kHz to 8.0 kHzThe RDSF series sine wave filters comply with national, international, and anticipated future regulations for worldwide use. General:Michael Riedel Transformatorenbau GmbH’s RDSF series of sine wave filters (output filters for variable frequency drives) are precisely tailored to the technical requirements of modern drives (VFDs). The use of modern variable frequency drives in motor control results in high harmonic content in the pulsed output voltages. These “harmonic components” place additional strain on the motor insulation, leading to shorter motor service life. The use of RDSF sine wave filters reduces these additional losses even when long motor leads are used, thereby helping to prevent early failures and costly downtime.Technical Specifications:Rated voltages: 3AC 400V to 3AC 690V (higher voltages available upon request)Rated current: up to 1200 A (higher currents available upon request)Frequency: 50 Hz to 60 Hz (higher frequencies available upon request)Pulse width modulation (PWM) frequencies: 1.5 kHz to 8.0 kHzAmbient temperature: ta = 40°C / F, S1/100% duty cycleCooling Types: ANProtection class: IP00 (higher protection classes available upon request)Design: compact, open design for installation in dry roomsAdvantages: Low-noise filters thanks to new core geometry (confirmed by noise level measurements at Aalen University) Reduction of overvoltages on the motor insulation (longer motor operating times) Long motor leads are possible Lower noise levels at the motor

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