Centrifugal fans ; backward curved (Type: E/DHA...)

Classification:

Centrifugal Fans

Backward Curved

Product accessories:

Catalogue: World of fans (Standard fans).pdf

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

Product Description

Casings are made of galvanised sheet steel. Side parts and the spiral-shaped guide plate are connected with rivets.

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

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 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.