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Centrifugal fans , forward curved

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 at two levels together with the rotor according to quality level G2.5 to DIN ISO 1940.

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) Catalogue: World of fans (Standard fans)

File format: .pdf

Filesize: 19.66 MB

Operating manual: Fans with AC-drives (BA045) Operating manual: Fans with AC-drives (BA045)

File format: .pdf

Filesize: 1.29 MB


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 at two levels together with the rotor according to quality level G2.5 to DIN ISO 1940.

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

Catalogue: World of fans (Standard fans) Catalogue: World of fans (Standard fans)

File format: .pdf

Filesize: 19.66 MB

Operating manual: Fans with AC-drives (BA045) Operating manual: Fans with AC-drives (BA045)

File format: .pdf

Filesize: 1.29 MB


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 at two levels according to quality level G2.5 as per DIN ISO 1940.

Electrical connection

The electrical connection is made through the terminal box on the motor in protection class IP55.

Downloads

Catalogue: World of fans (Standard fans) Catalogue: World of fans (Standard fans)

File format: .pdf

Filesize: 19.66 MB