Centrifugal Fan Motor

 

Component Overview

The motor is the primary energy consumption driver of any centrifugal fan system. If calculated over the entire service life, it is seen that the electricity cost of a motor is many times higher than the purchase price of the original equipment. Therefore, plant engineering teams and purchasing managers should consider not only low price but also its 'efficiency class' as the main criterion when selecting a motor. A properly specified Centrifugal Fan Motor meets four simultaneous engineering requirements:

 

1. It provides sufficient starting and full-load torque throughout the speed range.

2. Its enclosure or outer casing ensures a protection class that is perfectly suited to the installation environment.

3. Its thermal insulation class adapts perfectly to the surrounding temperature and duty cycle.

4. Its efficiency class or efficiency is such that it simultaneously meets both the legal or regulatory standards of the installation area and the operator's long-term energy-saving targets.

 

According to the international standard IEC 60034-30-1:2014, it is currently mandatory to use at least IE3 Premium Efficiency in most industrial applications around the world. However, for motors with a power of more than 75 kW, the use of IE4 Super Premium Efficiency has now become mandatory in various legal jurisdictions. Every motor we supply is at least IE3 certified as standard. Additionally, you can also choose the IE4 option for motors of any power range if you wish.

Standard industrial centrifugal fans are typically installed outdoors, in dusty or humid environments. Therefore, TEFC (Totally Enclosed Fan Cooled) enclosures are used as standard in these cases. Its completely sealed body prevents outside air from entering and an external cooling fan keeps the winding temperature within specified limits. ATEX-certified motors are specifically supplied for hazardous areas such as chemical factories, petrochemical plants, gas handling or solvent processing. These motors fully comply with international standards IEC 60079 and ATEX Directive 2014/34/EU and are 100% safe for Zone 1 / Zone 2 areas. For fans and boiler ID/FD fans in cold or humid environments, a frame heater (FH) is specified inside the terminal box during standby. This keeps the winding temperature above the dew point so that condensation does not form inside during restart and there is no risk of the insulation cracking or breaking. If a VFD (Variable Frequency Drive) is used to control the speed of a Centrifugal Fan Motor, the motor must have an inverter-duty winding. This is because the high (dV/dt) voltage spikes generated from VFD switching can easily damage the insulation of ordinary motors. The number of poles of the motor is determined depending on the operating speed of the fan. Standard centrifugal fans are mainly used in 4-pole ~1,450 RPM. However, for large-sized and low-speed industrial and boiler fans, 6-pole ~960 RPM and 8-pole ~720 RPM motors are used. Mounting is supplied in accordance with the fan drive arrangement according to IEC standard configurations-IM B3, IM B5, IM B35, IM V1.

 

Primary Industrial Uses

 

Combustion & Burner Industry

Oil, Gas & Petrochemical Industry

Automotive & Painting Industry

Marine & Shipbuilding Industry

Tobacco Industry

Agriculture Industry

Textile Industry

Glass Manufacturing Industry

Pulp & Paper Industry

Food & Beverage Industry

Ceramics & Brick Industry

Packaging Industry

Trusted Partners

 

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