EC Centrifugal fans ; backward curved (Type: EHAG...)
Properties
- flow rates up to 13,400 m³/h
- size: 225 - 560 mm (impeller diameter)
- highly efficient EC technology
- compact design
- backward curved impellers
- feet can be offset by 90°
- variable discharge direction
- integrated control system (EC controller)
- speed is 100% infinitely variable
» Design and Downloads
Casing
Casings are made of galvanised sheet steel. Side parts and the spiral-shaped guide plate are connected with rivets. In the side panels, there are holes for the fixing of the feet which can be implemented by 90°.
- up to size 400
- casing in spiral design
- from size 450
- casing in rectangular form
Impellers
The impellers are mounted directly on the rotors of the external rotor motors and are dynamically balanced on two levels with the rotor according to quality level G 2,5 / G 6,3 as per DIN ISO 21940-11.Electrical connection
The motors are fitted with an outgoing cable. The electrical connection is made via an IP44 terminal box which is supplied loose.
Downloads
Operating manual: Fans with EC-drives (BA044)Centrifugal fans ; backward curved (Type: E/DHA...)
Properties
- flow rates up to 28,000 m³/h
- size: 225 - 560 mm (impeller diameter)
- asynchronous external rotor motor
- backward curved impellers
- feet can be offset by 90°
- protection class IP54
- thermal class F
- connection cable on side
- motor protection by thermal contacts
- speed is variable using auto transformers
» Design and Downloads
Casing
Casings are made of galvanised sheet steel. Side parts and the spiral-shaped guide plate are connected with rivets. In the side panels, there are holes for the fixing of the feet, which can be implemented by 90°.
- up to size 400
- casing in spiral design
- from size 450
- casing in rectangular form
- model - EHA
- single inlet design (E)
- model - DHA
- double-sided inlet design (D)
Impellers
The backward curved aluminium impellers are mounted directly on the rotors of the external rotor motors and are dynamically balanced on two levels with the rotor according to quality level G 2,5 / G 6,3 as per DIN ISO 21940-11.Electrical connection
The motors are fitted with an outgoing cable. The electrical connection is made via an IP44 terminal box which is supplied loose.
Downloads
Catalogue: World of fans (Standard fans)
Operating manual: Fans with AC-drives (BA045)Centrifugal fans with IEC standard motor ; backward curved (Type: EHN...)
Properties
- flow rates up to 21,000 m³/h
- size: 200 - 630 mm (impeller diameter)
- casing made of galvanised sheet steel
- casing position: LG or RD
- IEC standard motor, IP55, thermal class F
- backward curved impellers
- terminal box directly on motor, IP55
- motor protection through PTC thermistors
» Design and Downloads
Casing
The casing is made of galvanised sheet steel. The side parts and the spiral plate are connected to each other by rivets. With size 200, the motors are flange-mounted directly. From size 225, the motors are mounted on a console. A plastic coating is available upon request.
Impellers
The impellers of the EHN ... types are produced with backward curved blades made entirely of aluminium. The inlet cones made of galvanised sheet steel are screwed into the casing. The impellers together with the impeller hub are dynamically balanced on two levels with the rotor according to quality level G 2,5 / G 6,3 as per DIN ISO 21940-11.Electrical connection
The electrical connection is made through the terminal box on the motor in protection class IP55.
Downloads
Operating manual: Fans with IEC standard motor (BA009)