Three-Phase Motor Filter RDMF 24 – 1120

Three-phase motor filtersRDMF 24 – 1120Three-phase motor 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 RDMF series motor filters comply with national, international, and anticipated future regulations for worldwide use. General:Michael Riedel Transformatorenbau GmbH ’s RDMF motor filters reduce voltage rise rates to less than 500 V/μs. As standard, the motor filters are supplied for a rated voltage of up to 3AC 690 V and a rated current of up to 1200 A. In addition, a unique core geometry significantly reduces noise emissions. The use of RDMF is recommended for motor supply cables up to 250 m in length.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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