Customer Requirement
An OEM customer chose the LWCD-45 series cross-flow fan. They requested to provide the confirmation data sheets and technical drawings required for system integration. The available installation space is long and shallow, and using the cross-flow fan is more suitable for equipment layout. The fan needs to be powered by a 24 VDC power supply and support PWM speed control. Noise is also an important consideration, and the required sound level is specified as 42 decibels (A). They ultimately requested the drawings of the LWCD-45350MN-06 model.
Engineering Solution
The LONGWELL engineering team evaluated the available impeller sizes in the LWCD-45 series based on the customer’s installation space. The final selected impeller length of 350 mm and diameter of 45 mm maintained the installation space for the fan.
The selected configuration of the LWCD-45350MN-06-14 model was designed for low-resistance airflow paths. It has a maximum airflow of 194 m³/h and a maximum static pressure of 24 Pa. It is A three-phase BLDC motor with an integrated SmartEC™ driver that meets the 24 VDC power requirement and accepts PWM input directly. With a rated input power of 9.1 W, the fan provides adjustable airflow without requiring a separate external speed controller.
Technical Specifications
| Parameter | Value |
|---|---|
| Model Number | LWCD-45350MN-06-14 |
| Voltage | 24 VDC |
| Motor Type | 3 Phase BLDC (EC Motor) |
| Input Power | 9.1 W ±10% |
| Current | 0.38 A ±10% |
| Speed | 2000 RPM |
| Max Airflow | 194 m³/h |
| Max Static Pressure | 24 Pa |
| Noise Level | 42 dB(A) |
| Dimensions (L x W x H) | 408 x 80 x 72 mm |
| Impeller Diameter / Length | 45 mm / 350 mm |
| Bearing Type | Ball Bearing |
| Operating Temperature | -25°C to +60°C |
| Speed Control | PWM / 0-10V |
| Signal Output | FG (Tachometer) |
| Certifications | CE, RoHS, ISO |
The key figures for this application are the 194 m³/h airflow delivered across a 350 mm length, and the low 9.1W power draw. This combination signifies high operational efficiency, critical for electronics cooling where both thermal performance and energy budgets are strict.
Technical Documentation
This product data sheet shows performance curves and specifications for the entire LWCD-45 series. The engineers can choose from the following standard sizes.
Why LONGWELL for This Application?
An OEM selects a component supplier based on more than just the datasheet. For this project, the choice of LONGWELL was reinforced by several factors beyond the fan’s technical merits:
- Technical Support: The customer’s request for drawings was processed immediately, with final approved documents generated through an efficient internal workflow from Sales Input to Approved. The technical documentation system is built strictly in line with these global standards, which helps OEM partners accelerate their own product compliance verification and market entry processes.
- Simplified System Integration: The cross-flow fan’s onboard SmartEC™ motor driver accepts PWM signals directly. This eliminates the need for the OEM to design, source, and validate a separate motor controller, reducing component count, cost, and supply chain complexity.
- Certified Testing: The specification results provide OEM engineers with reliable data for simulations and integration. The stated airflow of 194 m³/h is not a theoretical maximum but a verifiable figure tested to AMCA 210-16 and ISO 5801 standards.
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Trust from Global Customer: LONGWELL has long provided high-standard technical support services for Fortune 500 companies and top HVAC OEMs. Many customers have given positive feedback that LONGWELL’s technical support effectively improves the overall reliability of their products.
Explore our full Cross-Flow Fans range.
Frequently Asked Questions
Q: Is this fan available in 12VDC or 48VDC?
A: The LWCD-45 series is standardized on a 24VDC platform. For OEM projects with specific voltage requirements, LONGWELL’s 90-day New Product Introduction (NPI) process can be used to develop custom motor windings for 12VDC or 48VDC operation.
Q: Can the fan speed be controlled without a PWM signal?
A: Yes. The ross-flow fan is controlled for speed variation through PWM signals. If the white PWM control line is disconnected, after receiving a 24V DC power supply, the fan will default to running at its maximum rated speed.
Q: What is the lead time for the LWCD-45350MN-06-14 model?
A: For the standard model of the LWCD-45350MN-06-14 model, the sample can be offered within 3 days. The bulk order (≤500 units) will need 15–30 days. For OEM volume orders that exceed 1,000 units, typically need 6–10 weeks. We work closely with our OEM partners to establish delivery schedules that align with their production builds.
Technical Documentation & Resources
Have a Similar Fan Requirement?
Longwell’s engineering team delivers custom spec sheets and samples within 90 days. Since 1990, we have supplied EC fans and blowers to OEMs across HVAC, cold chain, data center, and industrial applications worldwide.
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🏆 ISO 9001 / ISO 14001 / ISO 45001 | CE (TÜV) | UL/ETL | ATEX Zone 21/22 | AMCA 210-16 / ISO 5801 tested
Project Item: 7039203276-LWCD-45350MN-06-14
Project Date: 2026-07-06 05:53:36
