Project Scope and Requirements
On August 1, 2026, LONGWELL opened a project for 90mm and 100mm EC cross flow fan configurations designed for refrigeration and air conditioning systems. The requirement specified solutions for both 220V and 115V power supplies, integrated protective wire guards, and options for both metal and plastic impellers, accompanied by 3D CAD models and technical specification sheets.
Engineering Design and Specifications
On August 5, 2026, LONGWELL engineering completed the design development and model designations for the LWCE-90680 and LWCE-100620 cross flow series.
| Model Number | Nominal Voltage | Impeller Diameter / Length | Impeller Material | Airflow (Max) |
|---|---|---|---|---|
| LWCE-90680SG-06-00 | 230 VAC | 90 mm / 680 mm | SGCC | 1200 m³/h (706 CFM) |
| LWCE-90680UG-06-00 | 115 VAC | 90 mm / 680 mm | SGCC | — |
| LWCE-100620SG-06-00 | 230 VAC | 100 mm / 620 mm | Aluminium | 1250 m³/h (736 CFM) |
| LWCE-90680SG-07-00 | 220 VAC | 90 mm / 680 mm | PA66 | 1200 m³/h |
As specified in the technical documentation, model LWCE-90680SG-06-00 operates across a voltage range of 184–276 VAC at 50/60 Hz, with a rated power input of 60W and a maximum speed of 1500 RPM. The unit integrates 0–10VDC/PWM speed control, IP55 environmental protection, Class B insulation, two ceramic bearings within the motor, and one conventional bearing supporting the impeller end. Drawing specifications for model LWCE-90680SG-07-00 reflect a PA66 plastic impeller combined with an SGCC metal grille assembly.
Technical Review Deliverable
On August 7, 2026, the technical audit of the engineering drawings and specification sheets was completed. The finalized drawings and technical models were made available for fit evaluation.
Request Technical Drawings for Your Application
If you require custom EC cross flow fans for HVAC, refrigeration, or space-constrained equipment, please share your required airflow, voltage, drive signals, and dimensional limits. Contact LONGWELL through our contact page or review standard product options on the LONGWELL Fan Selection Platform.
Choose the right cross flow fan
Longwell manufactures 495 cross flow fans in-house. Send airflow, static pressure and voltage — an engineer replies with a matching model, performance curve and price within one working day.
