Three-phase filter circuit chokes RFDr 7/2.5 – 7/50

Three-phase filter circuit chokesRFDr 7/2.5 – 7/50Three-phase filter circuit chokes for reactive power compensation systemsRated voltage: 3AC 400VChoke factor: 7%Resonance frequency: 189 HzRated frequency: 50 Hz50 Hz current: 1.06 x rated current150 Hz current: 0.04 × rated current250 Hz current: 0.31 x rated current350 Hz current: 0.13 x rated currentThe RFDr series filter circuit chokes comply with national, international, and anticipated future regulations for worldwide use. General:Three-phase filter circuit chokes are used in reactive power compensation systems. Together with the capacitors in the reactive power compensation system, they form a series resonant circuit, thereby achieving defined power system conditions.Three-phase filter circuit chokes with power ratings matched to the load ensure the specified reactive power compensation when connected in series with capacitors of the specified capacitance.Three-phase filter circuit chokes that are not power-matched are rated based on the capacitors used and result in varying reactive power compensation values.With a commonly selected inductance of 7%, the series resonant circuit formed by the filter circuit inductor and compensation capacitors results in a resonance frequency of 189 Hz.Configuration:Open, freestanding design, stationary, for equipment installation and mounting in dry rooms. Connection up to 12.5 kVAr to creepage-current-proof transformer terminals with screw and flat-plug connections: 2.8 x 0.8 mm up to 5 A, 6.3 x 0.8 mm up to 20 A. According to DIN 46249, the 2.8 x 0.8 mm flat plug connection may only be loaded up to 5 A, and the 6.3 x 0.8 mm connection up to 20 A. For capacities from 12.5 kVAr to 25 kVAr, universal terminal blocks with screw connections are used; for capacities of 30 kVAr and above, crimped cable lugs are used. The terminals are protected against contact by the back of the hand and fingers in accordance with UVV (BGV A3).With a temperature switch in the center coil.IP 00, insulation class E, max. ambient temperature 40°C (ta40°C/E)Technical Specifications:Rated voltage: 3AC 400 VChoke factor: 7%Resonance frequency: 189 HzRated frequency: 50 Hz50 Hz current: 1.06 x rated current150 Hz current: 0.04 x rated current250 Hz current: 0.31 x rated current350 Hz current: 0.13 x rated currentFilter circuit chokes with different technical specifications are available upon request.

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