What is an EC motor? What are its advantages over traditional AC motors?

EC stands for Permanent Magnet Variable Frequency (BLDC) motor. Compared to AC motors, it uses a brushless design with less friction and lower heat. The core advantage is its energy conversion efficiency of over 90% (vs. 35-55% for AC) and a lifespan of 30,000-60,000 hours, which is 3-6 times longer than traditional motors.

How is the energy-saving performance of this fan? How much can I save on electricity?

Since the EC motor's energy efficiency reaches 87-94%, its power consumption is much lower than conventional motors for the same airflow. It solves the pain point of high cooling costs in large open spaces, making it ideal for industrial plants and stadiums that require long-term operation.

Our power grid voltage is unstable; will this affect the fan's lifespan?

We have designed a wide voltage protection feature (supporting 180-240V or 90-140V customization). It can handle voltage fluctuations of 15%, ensuring safe and stable operation even in remote or heavy industrial areas with unstable power grids.

30 Inch Smart Control 7 Speed Gears with Wheels Industrial Exhaust Fan

Name: 30 Inch Smart Control 7 Speed Gears with Wheels Industrial Exhaust Fan
Brand: Ningbo Keycool Electric Appliance Co., Ltd.
SKU: 2321676085

Zhejiang, ChinaNingbo Keycool Electric Appliance Co., Ltd.

US$151.00

100-299 Sets

US$146.00

300-499 Sets

US$142.00

500+ Sets

Product profile

Customization

Available

Material

Plastic

Blade Material

Plastic

Model NO.

YS75

Type

Axial Fan

Electric Current Type

Mounting

Free Standing

Certification

Product Name

30 Inch 7 Fan Speeds Copper Ec Motor Electric Indu

Size

30 Inch

Speed

7 Speed Settings

Speed Range

200-900rpm

Blade Diameter

75cm

Maximum Air Volume

14000 M ³/H

Maximum Wind Distance

25m

Transport Package

Corrugated Box

Specification

1030*420*1117mm

Trademark

KEYCOOL/OEM

Origin

China

Production Capacity

10000 Piece/Pieces Per Day Industrial Fan

Key features

Permanent magnet brushless variable frequency motor, suitable for 180-240V wide voltage or 50/60Hz dual frequency.

PP engineering plastic, corrosion-resistant, impact resistant, durable and long-lasting.

It can be moved for use and tools can be placed on the top, suitable for use in sheet metal workshops and automobile repair shops.

Accessories: 4 casters, 2 footboards, instruction manual, warranty card.

Optional: detachable spray head, stepless speed regulation switch, yellow, blue and brown fan blades, yellow and blue screen covers.

Company profile

QA/QC Inspectors100% Finished Products InspectionR&D CapabilitiesFast Delivery

Ningbo Keycool Electric Appliance Co., Ltd.

Zhejiang, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 6 Years CertifiedNearest Port: Ningbo Port, Shanghai PortAverage Response Time: ≤7.20h

AI-Powered supplier vetting

SummaryThe supplier is identified as a trade company in Ningbo, associated with manufacturing-sector companies and operating one production line. It reports broad customization and ODM capabilities, recent new-product activity, six R&D engineers, and eight quality inspectors. Its stated inspection process is documented and uniformly followed, with a claim of 100% unit testing before shipment. However, it reports no supplier-management-system certification, no overseas service infrastructure, no OEM service for popular brands, and no SDK availability. Service-related procedures exist but lack written records for supplier assessment, corrective actions, and complaint handling. Manufacturing controls are incomplete because ongoing quantity reconciliation is not performed. Export experience and customer reach are indicated, but specific customer cases are not provided.

CertificationsThe supplier-management-system certification field is recorded as NIL. No certification holding is evidenced in the provided information.

After-Sales capabilityThe supplier has procedures for customer complaints and corrective/preventive actions, but no written records are maintained. It also lacks overseas warehouses, showrooms, agents or branches, and reported participation in offline trade shows, limiting demonstrated overseas service infrastructure.

R&D capabilityThe supplier reports new products within the past year, provides ODM services, and offers multiple design-customization options. It has six R&D engineers, but no SDK is available; the evidence supports active product development and design capability, though not SDK-based development.

Production capacityThe supplier operates one production line and identifies a refrigerator and washing-machine assembly line. It reports eight quality inspectors, documented finished-product inspection instructions followed uniformly, and 100% testing claims, but does not conduct ongoing quantity reconciliation for each batch or mass production.

Customization capabilityThe supplier explicitly provides customization from samples, customization from designs, full customization, minor customization, and flexible customization. These capabilities are stated consistently across the design-service records, demonstrating broad customization coverage.

Product Q&A

Q:Are you manufacturer or trading company?

We are a professional manufacturer, and we will do our best to show you the best quality, fastest delivery and highest credit to you, looking forward to cooperating with you!

Q:Can you provide sample?

Yes, we can provide sample but customer should pay cost of sample and freight charge.

Q:How about the delivery time?

It depends on your quantity. Generally, it takes 35-50 days after receiving your deposit.

Q:Can we do our OEM logo?

Yes,we can do OEM logo for you.FOR FREE.You just provide LOGO design to us.

Q:How about your quality warranty ? And do you supply spare parts?

Yes, we provide 1 year warranty, and 3 years for motor, and we always provide 1% spare parts For Free.