Technical Specifications
This document details the technical specifications, performance data, and design variations of axial fans from the Series FL and FE.

Specifications
- Voltage: Available in 1~ 115 V and 3~ two-speed 460 V ∆/Y.
- Frequency: 60 Hz.
- Thermal Insulation Class: 155 (previously class F).
- Protection: IP 54.
- Motor Protection: Thermostat switch (TB).
- Paint Finish: RAL 9005 black.

Performance Data
Performance data is provided for models FE045, FE050, FE056, FE063, FE071, FE080, and FE091, detailing power (P1), current (I), speed (n), and temperature rise (tR).

Design Variations
Includes design variations K, Q, and V, affecting airflow direction and weight.

Performance Curves
Measured in full bell mouth without guard grille in installation type A according to ISO 5801, showing airflow (q) and pressure (p) relationships.

Accessories and Customization
Accessories are available, with custom voltage and frequency options upon request at an extra charge.

Dimension Sheets
Provide detailed information on type, article number, design, airflow direction, weight, and connection diagrams for each model.

Overview
Focuses on the FE091-SDQ.6N.V5 and related models, including characteristic data, performance metrics, and constructional variants.

Performance Data
Includes electrical specifications such as power (P1), current (I), and rotational speed (n) for different voltage and frequency configurations, airflow rates in CFM and m³/h, and pressure data in in.w.g and Pa.

Characteristic Data
Presents noise levels in dB and efficiency metrics for various operating conditions, measured according to ISO 5801 standards.

Constructional Variants and Dimensions
Detailed dimensional sheets specify measurements in millimeters and inches for precise installation and compatibility.

Electrical Connection
Details on terminal boxes and connection cables for proper electrical integration and safety compliance.

Relevance
Essential for engineers and technicians involved in installation, maintenance, and operation, providing necessary technical details for effective use.