Original electric motor sample identified by the supplier as the unit supplied for the Honduras radiator cooling fan evaluation.
A customer in Honduras reported 5,000 hours of continuous, problem-free operation from a Dongchun industrial radiator cooling fan motor sample. This is customer-reported operational feedback, not an independently certified endurance test.[S1]
Before a production order, equipment buyers want to know how a sample performs in their own installation.
In this case, the customer purchased a Dongchun three-phase induction motor sample for an industrial radiator cooling fan. The feedback was encouraging, while the proposed production purchase still required internal approval. The account also identifies details to confirm before repeating the specification.[S1]
What Was the Industrial Radiator Cooling Fan Application?
The customer was evaluating the sample in an industrial radiator cooling fan application in Honduras. The supplied account identifies the equipment and electric motor type, but does not include the radiator design, fan diameter, drive arrangement or site measurements.[S1]
For an equipment manufacturer, those missing details are useful questions for the next technical discussion. Ask whether the fan is directly coupled or belt-driven, which direction it rotates and what shaft speed the equipment requires. Record the installation environment and expected operating schedule before comparing quotations.
Use this case to frame an enquiry, then evaluate your own fan requirements.
✓
The reported application was an industrial radiator cooling fan in Honduras. True
The supplied customer-case account identifies this application and country; detailed installation records were not supplied.
×
This case establishes suitability for every radiator cooling fan. False
The feedback concerns one sample and installation; other fan requirements need a separate application review.
Which Motor Specifications Still Need Confirmation?
The supplied crate photograph shows the following markings. The two voltage-frequency-power combinations are readable, but the start of the model marking is partly obscured by a packing strap. Final sample ratings still need confirmation against the nameplate and matching technical documents.[S1]
Export-crate image retouched for presentation: logo cleaned and rating text restyled. Ratings shown: 400 V/50 Hz/11 kW and 480 V/60 Hz/12.7 kW; the model prefix remains partly obscured.
غرض
Reported packaging information
Verification needed
نموذج
E4-180L-8 visible; leading character obscured by strap
Confirm exact model and sample identity
تصاعد
B3
Match installation drawing
Number of poles
8
Check nameplate and data sheet
50 Hz rating
400 V / 50 Hz / 11 kW / 15 HP
Confirm complete rating combination
60 Hz rating
480 V / 60 Hz / 12.7 kW / 17.3 HP
Confirm complete rating combination
ماركة
دونغتشون
Match supplied sample
فئة الكفاءة
IE4, as identified by Dongchun
Obtain matching efficiency documentation
Dongchun identifies the motor as IE4 for this article. The visible crate marking reads E4-180L-8, with the leading character covered by the packing strap. The 15 HP designation corresponds to 11 kW at 400 V/50 Hz; the separate 480 V/60 Hz marking is 12.7 kW/17.3 HP. Confirm the complete model and efficiency documentation against the motor nameplate.[S1]
ABB's nameplate guidance explains that ratings correspond to specified voltage and frequency, and that multiple-frequency nameplates need the corresponding parameters. Buyers should therefore confirm an11kW three phase motorenquiry separately from the reported 12.7 kW, 60 Hz rating—not merge the two into one specification.[S3]
✓
The supplied crate photograph shows different power markings at 50 Hz and 60 Hz. True
It lists 11 kW at 400 V/50 Hz and 12.7 kW at 480 V/60 Hz; both still require document verification.
×
The sample is confirmed as an IE4 motor rated 11 kW at 480 V/60 Hz. False
The reported 60 Hz packaging rating is 12.7 kW/17.3 HP; 11 kW/15 HP is the 50 Hz marking. Matching IE4 documentation still needs confirmation.
What Did the Customer Report After 5,000 Hours?
Customer-Reported Operational Feedback
Customer identity pixelated for privacy. Feedback reports 5,000 hours of continuous operation without problems; the proposed purchase was awaiting the plant manager’s authorization.
The supplied WhatsApp screenshot contains this customer message:[S1]
“Well, the engine is under test and has already completed 5000 hours of continuous operation without any problems.”
This is the central result: the customer reported continuous operation without problems during the sample evaluation. It gives buyers concrete field feedback.[S1]
The account does not provide an independent test report, hour-meter record, maintenance history or measured temperature, vibration, current, load or efficiency. The message therefore cannot establish a certified service life or performance under other conditions.[S1]
The customer also expressed an intention to place an order, subject to the plant manager's purchase authorization. That is purchase intent, not a confirmed production order.[S1]
✓
The 5,000-hour statement is customer-reported feedback. True
The supplied WhatsApp screenshot contains this message about the sample evaluation.
×
A third party certified 5,000-hour motor life and a production order was confirmed. False
Neither third-party certification nor a confirmed production purchase order was supplied.
Why Consider an 8-Pole Electric Motor for a Cooling Fan?
ان 8 pole electric motoris a candidate when the fan design calls for its speed range. Synchronous speed followsnₛ = 120 × frequency ÷ number of poles. For eight poles, that is 750 RPM at 50 Hz and 900 RPM at 60 Hz.[S2]
These are magnetic-field speeds. A three-phase induction motor operating as a motor runs below synchronous speed because of slip. The sample's actual rated speed must come from its confirmed nameplate or data sheet;900 RPM is not a verified shaft-speed rating for this sample.[S2][S3]
When requesting a480V 60Hz electric motor, specify the required shaft speed as well as pole count. Ask the fan designer to confirm the motor selection and mechanical drive arrangement. An eight-pole designation alone does not establish airflow, noise, cooling capacity or energy savings for the assembled equipment.
✓
Eight poles at 60 Hz gives a synchronous speed of 900 RPM. True
This follows the synchronous-speed formula and ABB's pole-count table; it is not the sample's measured speed.
×
An eight-pole induction motor must deliver exactly 900 RPM at its shaft on 60 Hz. False
Actual motoring speed is lower because of slip and requires the motor's own rated-speed information.
What Quality Evidence Should Buyers Request?
Dongchun's website describes one-by-one factory testing. That is a manufacturer process statement, separate from this customer's operating account; no sample-specific factory test results were supplied for this article.[S4][S1]
For a new industrial cooling fan motor order, ask for records linked to the proposed model or serial number. A practical review can cover:
Confirmed nameplate, data sheet and installation drawing.
Agreed electrical inspection items and acceptance limits.
Bearing, assembly and balance checks relevant to the fan installation.
Applicable efficiency documentation and its exact model scope.
Final inspection, identification and export-packing photographs.
Agree which records will be delivered before shipment. This makes industrial motor reliability a reviewable purchasing requirement.
✓
Factory-process statements and customer operating feedback are different evidence. True
The website describes testing generally; the customer message describes one sample's reported operation.
×
The customer message proves every factory inspection result. False
The supplied feedback contains no sample-specific factory test measurements or inspection report.
What Should Cooling Equipment Manufacturers Put in an RFQ?
Dongchun Motor supplies electric motors for B2B wholesale buyers, with OEM support described in our company profile. Explore ourthree phase motor range و company introductionwhen preparing an equipment enquiry.[S5][S6]
Send the fan application, required power, voltage, frequency, rated speed, mounting drawing, operating schedule and quantity. Identify any sample specification that must be repeated, and request written confirmation of changes before production.
قالب RFQ للموردين
Please quote an electric motor for our industrial radiator cooling fan. Supply: [V/Hz]; required output: [kW]; rated shaft speed: [RPM]; poles: [if specified]; mounting and shaft drawing: [attached]; drive arrangement and rotation: [details]; environment and operating schedule: [details]; quantity: [units]. Please confirm the complete rating at each frequency, efficiency documentation, inspection records, production days after deposit, warranty period and export packing.
✓
An RFQ should identify the fan application and electrical and mechanical requirements. True
These details define what the supplier is being asked to quote and confirm.
×
The sample's reported operating hours replace a new buyer's specification review. False
A new order still needs its own agreed ratings, installation requirements and acceptance records.
خاتمة
The Honduras customer reported 5,000 hours of continuous, problem-free operation from a Dongchun sample used for an industrial radiator cooling fan. That is useful application feedback, with clear limits: the complete model designation, efficiency class and nameplate ratings still need confirmation, and the proposed production purchase was awaiting approval.[S1]
Planning a radiator or cooling fan project?اتصل بناto discuss your motor requirements and request a quotation fromTAIZHOU DONGCHUN MOTOR CO., LTD.[S6]
الحواشي
[S1]Anonymous Honduras radiator cooling fan case: customer messages and packaging transcription supplied for this draft, October 19, 2026. The three original uploaded images were reviewed on October 19, 2026 via the user-provided shared conversation. The WhatsApp screenshot is included with customer identity pixelated at the supplier’s request on October 20, 2026; the complete model prefix, nameplate and sample test records remain unverified. This is customer-reported feedback.
[S2]ABB, *Softstarter Handbook*, “Speed,” printed page 6 (PDF page 13), https://library.e.abb.com/public/2985284834bcff7fc1256f3a00274038/1SFC132002M0201.pdf. Accessed October 19, 2026. General speed principles, not a test of the Dongchun sample.
[S3]ABB, *How to read a NEMA motor nameplate*, https://new.abb.com/news/detail/80778/how-to-read-a-nema-motor-nameplate. Accessed October 19, 2026. General rating principles; no NEMA conformity claim is made for this sample.
[S4]Dongchun Motor, official homepage, factory-testing description, https://iecmotores.com/. Accessed October 19, 2026. Manufacturer statement, not an independent audit or sample test report.
[S5]Dongchun Motor, *Three Phase Motor*, https://iecmotores.com/three-phase-motor/. Accessed October 19, 2026. Product-range context does not confirm this sample's efficiency class.
[S6]Approved Dongchun company profile and user-provided company/contact details, October 19, 2026; official pages: https://iecmotores.com/about/ and https://iecmotores.com/contact-us/. Accessed October 19, 2026.
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