Centrifugal fans ; forward curved (Type: E/DRA...)
Properties
- flow rates up to 15,000 m³/h
- size: 180 - 400 mm (impeller diameter)
- casing made of galvanised sheet steel
- asynchronous external rotor motor
- forward 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°.
- model - ERA
- single inlet design (E)
- model - DRA
- double-sided inlet design (D)
Impellers
The impeller is made of galvanised sheet steel and is mounted directly to the rotor of the external rotor motor and balanced 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 drive 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 slippage characteristics (Type: E/DRA...)
Properties
- flow rates up to 12,000 m³/h
- size: 249 - 399 mm (impeller diameter)
- steep volume-pressure curve
- extremely low starting current
- casing made of galvanised sheet steel
- asynchronous external rotor motorr
- forward curved impellers
- protection class IP54
- thermal class F
- motor protection by thermal contacts
- speed is variable using auto transformers
» Design and Downloads
Casing
The casing is made of galvanised sheet steel. On request, a plastic coating can be applied at an additional cost.
- model - ERA
- single inlet design (E)
- model - DRA
- double-sided inlet design (D)
Impellers
The impeller is made of galvanised sheet steel, and is mounted directly to the rotor of the external rotor motor and balanced 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 drive motors are fitted with an outgoing cable. The electrical connection is made via an IP54 terminal box which is supplied loose.
Downloads
Centrifugal fans with IEC standard motor ; forward curved (Type: ERN...)
Properties
- flow rates up to 11,000 m³/h
- size: 200 - 450 mm (impeller diameter)
- casing made of galvanised sheet steel
- casing position: LG or RD
- IEC standard motor, IP55, thermal class F
- forward 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 ERN... types with forward curved blades are manufactured from galvanised sheet steel. The inlet cones made of plastic 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)
