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Date: 9.29.10
Title: Rosenberg’s Single Inlet Centrifugal Fans
Provide Reliable Wind Power Cooling |
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CHARLOTTE, NC – Designated the ERAE and ERAD Series, Rosenberg’s
forward-curved radial centrifugal AC fans deliver up to 4,000 CFM of air
movement in a space-saving single-inlet design. They are widely used
for the reliable cooling of generators and switchboards in modern wind
energy plants and windmills. Other applications include clean rooms,
commercial kitchen applications and railway air conditioning.
They are available in sizes from 5.2 inches to 15.7 inches
(133 mm to 400 mm). The size designation corresponds to the outside
diameter of the drum impeller. The impeller is made of galvanized sheet
steel. It is mounted directly to the rotor of the external rotor motor,
which is 100% speed controllable, so noise and vibration levels are
reduced to the lowest. The impeller is balanced dynamically at two
levels with the rotor according to quality level G2.5 to DIN1940. The
casing is also made of galvanized steel.
These rugged, high-efficiency centrifugal fans have been developed
especially for modern ventilation applications. They comply with R20
standards. The outlet flange is in compliance with DIN323.
The asynchronous motors are protected by thermal contacts.
Insulation is Class F. Protection is to IP54. The fans are also
available featuring Electronically Commutated (EC) motor technology. The
largest EC model (22 inches/560mm) delivers up to 7,500 CFM of air
movement.
Rosenberg fans have been used
in demanding applications around the globe since 1981 and are built to
handle a wide range of requirements regarding resistance to mechanical
shock, temperature range and power supply.
In addition to standard products, Rosenberg’s engineering and
manufacturing specialists offer application assistance and work directly
with customers to provide customized solutions to their air movement
problems. They are skilled at producing fans that match customers’
unique needs such as special finishes, voltages or frequencies.
The Rosenberg family of companies employs more than 1,200
individuals worldwide. Rosenberg USA is headquartered just outside
Charlotte in Indian Trail, N.C. For more information, or to place an
order, contact Rosenberg USA by phone at (704) 893-0883; fax (704)
882-0755 or e-mail sales@rosenbergusa.com.
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