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DO Negative pressure fan

HuaDa Motors employs core permanent‑magnet variable‑frequency technology, delivering superior efficiency and energy savings while intelligently adjusting speed to match environmental demands. Power‑saving rates can consistently exceed 25%. With an IP55 protection rating and Class H insulation, the motor operates reliably across a temperature range of –35°C to 65°C. Its soft‑start feature ensures safe operation, and simultaneous multi‑motor startups do not impose undue stress on the power grid. Equipped with built-in intelligent overload and overheating protection chips, it safeguards against unexpected failures and significantly extends service life.

Category:

DOHuada negative-pressure fan

Phone:400-888-8888

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Product Description

800mm /31in|900mm/35in |1000mm/35in
1100mm/43in 1220mm/47in | 1380mm / 47in

Product model	Product Dimensions (mm)	Housing material	Fan blade specifications	Voltage (V)	Frequency (Hz)	Power (kW/h)	Rotational speed (R/M)	Maximum Airflow (m³/h)	Noise (dB)
HDF/F800	800800320	Galvanized iron casing	Stainless steel, 6 blades	220/380	50/60	0.37	660	16000	<55
HDF/F900	900900400	Galvanized iron casing	Stainless steel, 6 blades	220/380	50/60	0.37	560	19000	<55
HDF/F1000	10001000400	Galvanized iron casing	Stainless steel, 6 blades	220/380	50/60	0.55	560	32000	<60
HDF/F1100	11001100400	Galvanized iron casing	Stainless steel, 6 blades	220/380	50/60	0.55	560	35000	<60
HDF/F1220	12201220400	Galvanized iron casing	Stainless steel, 6 blades	220/380	50/60	0.75	560	40000	<63
HDF/F1380	13801380400	Galvanized iron casing	Stainless steel, 6 blades	220/380	50/60	1.1	460	48000	<65
HDF/F1530	15301530400	Galvanized iron casing	Stainless steel, 6 blades	220/380	50/60	1.5	460	57000	<65

Product Specifications

Comparison item	HuaDa Permanent Magnet Intelligent Negative-Pressure Fan	Traditional AC asynchronous motor fan
Number of comparisons	1 unit	1 unit
Size	1380X1380X480mm	1380X1380X480mm
Maximum airflow	40,000 m³/h	40,000 m³/h
Rotational speed	450r/min	450r/min
Actual power	1.2 kW/h	1.8 kW/h
Starting current	Smooth startup with minimal inrush current.	The startup is uneven and accompanied by vibrations, with significant current surges.
Annual electricity consumption of a single unit (24 hours/day, 300 days/year)	1 unit × 1.2 degrees/hour × 24 hours/day × 300 days/year = 8,640 degrees	1 unit × 1.8 kWh/h × 24 h/day × 300 days/year = 12,960 kWh
Annual energy savings per unit	12,960 degrees − 8,640 degrees = 4,320 degrees

Comparison between HuaDa Permanent-Magnet Intelligent Negative-Pressure Fans and Traditional AC Induction Motor Fans

850mm／33in|1060mm／42in| 1260mm/50in|1460mm/57in|

Product model	Product Dimensions (mm)	Housing material	Fan blade specifications	Voltage (V)	Frequency (Hz)	Power (kW/h)	Rotational speed (R/M)	Maximum Airflow (m³/h)	Noise (dB)
BLF/F850	850850480	SMC fiberglass-reinforced plastic	Fiberglass 6-blade	380	50/60	0.37	750	20000	<55
BLF/F1060	10601060480	SMC fiberglass-reinforced plastic	Fiberglass 6-blade	380	50/60	0.55	560	30000	<60
BLF/F1260	12601260560	SMC fiberglass-reinforced plastic	Fiberglass 6-blade	380	50/60	0.75	560	36000	<75
BLF/F1460	14601460580	SMC fiberglass-reinforced plastic	Fiberglass 6-blade	380	50/60	1.1	560	43000	<75

Product Specifications

Comparison item	HuaDa Permanent Magnet Intelligent Negative-Pressure Fan	Traditional AC asynchronous motor fan
Number of comparisons	1 unit	1 unit
Size	1460X1460X580mm	1460X1460X580mm
Maximum airflow	38,000 m³/h	38,000 m³/h
Rotational speed	560r/min	560r/min
Actual power	1.2 kW/h	1.8 kW/h
Starting current	Smooth startup with minimal inrush current.	The startup is uneven and accompanied by vibrations, with significant current surges.
Annual electricity consumption of a single unit (24 hours/day, 300 days/year)	1 unit × 1.2 degrees/hour × 24 hours/day × 300 days/year = 8,640 degrees	1 unit × 1.8 kWh/h × 24 h/day × 300 days/year = 12,960 kWh
Annual energy savings per unit	12,960 degrees − 8,640 degrees = 4,320 degrees

Comparison between HuaDa Permanent-Magnet Intelligent Negative-Pressure Fans and Traditional AC Induction Motor Fans

1460mm/57in

Product model	Product Dimensions (mm)	Housing material	Fan blade specifications	Voltage (V)	Frequency (Hz)	Power (kWh)	Rotational speed (R/M)	Maximum Airflow (m³/h)	Noise (dB)
BLF/F1460	14601460580	SMC fiberglass-reinforced plastic	7-leaf nylon	220/380	50/60	1.1	460	48000	<70

Product Specifications

Comparison item	HuaDa Permanent Magnet Intelligent Negative-Pressure Fan	Traditional AC asynchronous motor fan
Number of comparisons	1 unit	1 unit
Size	1460X1460X580mm	1460X1460X580mm
Maximum airflow	40,000 m³/h	40,000 m³/h
Rotational speed	450r/min	450r/min
Actual power	1.2 kW/h	1.8 kW/h
Starting current	Smooth startup with minimal inrush current.	The startup is uneven and accompanied by vibrations, with significant current surges.
Annual electricity consumption of a single unit (24 hours/day, 300 days/year)	1 unit × 1.2 degrees/hour × 24 hours/day × 300 days/year = 8,640 degrees	1 unit × 1.8 kWh/h × 24 h/day × 300 days/year = 12,960 kWh
Annual energy savings per unit	12,960 degrees − 8,640 degrees = 4,320 degrees