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The RF3D-146-180 is a high-performance, single-inlet AC centrifugal cooling fan specifically engineered for industrial variable speed drive systems. Manufactured by a European ventilation equipment vendor, it serves as a critical proprietary cooling spare part supplied directly to ABB drive systems, under the official ABB product ID 68973708.
Backward/forward tilting centrifugal fans
Built-in EC control circuit, no external capacitor required
The parts are made of high-strength galvanized steel sheets or metal materials
As a critical industrial cooling component, the RF3D-146-180 fan ensures optimal heat dissipation in low-voltage AC drive units, guaranteeing overall operational capability and system reliability. Over time, the cooling efficiency of a fan inherently decreases as components like bearings begin to wear out. To mitigate this risk, ABB follows relevant international standards and introduces structured maintenance solutions accordingly.
The improved RF3D-146-180 cooling fan is fully compliant with eco-friendly, ErP-approved regulations, helping drive owners significantly reduce their energy costs and carbon footprint without incurring excessive overhead. This fan model is specified with a distinct type code and long-life marking. To ensure high availability, its standard operation is calculated based on the L10 bearing life principle at a nominal ambient temperature of 35 °C.
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
ABB RF3D-146-180 AC Centrifugal Fan Manuals, Datasheets, Drivers, Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Metallurgy & Steel Rolling
Used in the high-power variable frequency main drive systems of blast furnace blowers and hot/cold rolling mills to provide forced air cooling for inverter modules (IGBTs).
Oil Drilling & Exploration
Installed inside the electrical control room inverter cabinets of offshore drilling platforms or onshore top drive systems to expel accumulated heat generated by high-current operations.
Petrochemical & Refining
Used inside the variable frequency drive cabinets of large crude oil transfer pumps and hydrocracking compressors to maintain specified operating temperatures for electrical components under continuous running conditions.
Thermal Power
Applied in the variable frequency speed regulation cabinets of boiler induced draft fans, primary air fans, and feed water pumps to provide all-weather heat dissipation protection for core power semiconductors.
Hydropower & Pumped Storage
Used within the excitation systems of hydro-generator sets or Static Frequency Converters (SFC) to rapidly expel heat from high-power rectifier units during unit startup and operation.
Pulp & Paper Industry
Used in the multi-point sectional variable frequency drive cabinets of continuous production lines for large paper machines, ensuring air dryness and constant temperature inside the cabinets within high-humidity workshops.
When using the RF3D-146-180 cooling fan, its terminals must be connected directly to a 230V AC power supply and the connection of any external startup capacitor is strictly prohibited, as this will immediately burn out the onboard integrated EC control chip.
During installation, the outlet plane must compress tightly against the rubber seals of the drive cabinet air duct to prevent airflow leakage and recirculation, while dust on the galvanized impeller must be cleaned periodically to maintain dynamic balance.
Furthermore, since long-term operation naturally wears out the bearings, a complete preventive replacement must be strictly executed on a 9-year cycle according to the official maintenance guidelines to prevent an inverter over-temperature fault caused by reduced cooling capacity.
Alternative Names
Alternative Names
RF3D 146 180RF3D-I46-I80RF3D-146-18ORF3D-I46-I8O
Technical notes
Technical notes
Internally, the hardware is configured with dual ball bearings, supporting mounting at any angle along the air duct rails inside the drive cabinet, where the outlet plane directly compresses against the rubber seals of the drive inverter modules (such as the ACS800 series). In terms of electrical connection and operational specifications, the component connects directly to a single-phase 230V AC power supply, compatible with both 50Hz and 60Hz power grids. It exhibits a power consumption of 230W and a current draw between 1.31A and 1.45A under full load. Driven by the electrical input, the maximum rotational speed of the impeller reaches 2694 RPM. The wiring architecture incorporates EC (electronically commutated) technology with an onboard integrated control chip, allowing the terminal block to interface directly with the AC line while eliminating the connection for an external running capacitor. According to the ABB drive preventive maintenance guidelines, this cooling component is scheduled for complete removal and original-site replacement on a 9-year cycle under a standard industrial environment of 35°C.
It is a high-performance single-inlet industrial centrifugal fan manufactured by EMC (S&P), typically bearing the full suffix K506 DSF-2326, commonly used as a dedicated core cooling component for ABB inverters.
What is the primary industrial use of the RF3D-146-180?
It is specifically used for forced air cooling and thermal management in large low-voltage AC drives (such as ABB ACS800 series inverter modules) to prevent high-temperature damage to core power components.
How do you correctly install and use a product like the RF3D-146-180?
Securely slide or bolt it into the fan rail or cooling duct of the inverter, connect the standard 230V AC power interface, and ensure the blower scroll outlet aligns perfectly with the system exhaust duct.
What are the rated power and current of the RF3D-146-180?
Its rated power consumption is approximately 230W (0.23 kW), and its rated current ranges between 1.31A and 1.45A at line frequency.
What type of motor technology does the RF3D-146-180 use?
It utilizes external rotor motor technology (often an energy-efficient EC motor in upgraded variants), which provides a more compact structure and higher cooling efficiency.
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