SEW high‑cooling fan

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　　 External fan

　　Many branches of the modern drive-technology industry use variable-frequency motors. If the frequency is near zero, the motor's normal ventilation cannot provide sufficient cooling, so adequate cooling cannot be guaranteed.

　　In addition to our standard-series Force ventilation fan units, which can be delivered on short notice, we also offer equipment custom-designed and manufactured for original equipment manufacturers (OEMs), as well as solutions compatible with all electric motor brands in the aftermarket.

　　Due to frequency control, our forced‑ventilation fans reduce the motor speed, thereby improving motor efficiency and extending its service life.

　　When the motor speed exceeds the synchronous speed, a forced‑draft fan can be used to reduce noise levels.

　　We are also happy to manufacture external fans according to your specifications. Simply use our quotation form to send us your dimensions.

　　Please contact us by email or phone to discuss the design of your external fan unit. Our technical sales team will be happy to answer any questions you may have about our products.

　　The unidirectional fan delivers a high airflow to the motor’s heat sink, ensuring effective cooling.

　　External fans (FBI series) are manufactured in Europe, with an ingress protection rating of IP66, an insulation class of F, and IEC frame sizes ranging from 63(56) to 225.

　　Multi-voltage (+/- 5 %)

　　Single-phase 220–275 V, 50 Hz

　　Single-phase 220-310V D 60Hz*

　　Three-phase 380–480 V, Y connection, 50 Hz

　　Three-phase 400–525 V Y 60 Hz

　　*Not applicable to frame number RBK 132

　　The bolt‑on mounting adapter is interchangeable and can be modified to suit any motor brand. This enables straightforward assembly at the factory and allows for easy re‑equipping of the motor with an external fan system at a later date.

　　The junction boxes of these devices are available in PPN and aluminum, with cover plates and lead wire materials also offered.

　　Ventilation equipment from kmmp - www.kmmp.de Forced ventilation equipment from kmmp - www.kmmp.de Ventilation equipment from kmmp - www.kmmp.de Forced ventilation equipment from kmmp - www.kmmp.de

　　External fan type Z-RBK, IP66 to Mb 1F, IEC frame size 250–450 (standard)

　　 Information

　　 Technical Data Sheet

　　The external fan is equipped with an aluminum motor and features an IP66‑rated housing. Its aerodynamically optimized blades deliver high airflow at low noise levels. The unit has been flow‑optimized to provide substantial airflow while maintaining low noise.

　　Our bolt‑on mounting adapters are interchangeable and can be customized to fit any motor brand. This enables straightforward assembly at the factory and allows for easy re‑equipping of the motor with an external fan system at a later date.

　　Our external fans are manufactured in Europe.

　　These external fans have IEC frame sizes ranging from 250 to 450. The enclosure is rated IP66, and the insulation class is F.

　　Multi-voltage (+/- 5%)

　　Three-phase 220–290 V, 50 Hz

　　Three-phase 220–333 V, D, 60 Hz

　　Three-phase 380–500 V, Y connection, 50 Hz

　　Three-phase 380–575 V, Y connection, 60 Hz

　　These external fan junction boxes are available in PPN, aluminum, or with a cover plate featuring lead wires.