Product Overview

The Raptor Panel SRE is a wall-mounted centrifugal fan designed for high performance ventilation applications. It features the BAT FE2owlet sickle bladed aerofoil impeller with serrated trailing edges and winglets, powered by a reliable Ziehl-Abegg external rotor motor. The product range includes three standard sizes (350mm, 400mm, and 450mm) with airflow rates up to 1.74 m³/s and is suitable for fixed speed operation up to +70°C, with full speed controllability.

Casing and Construction

• Heavy-duty internal aluminium louvre grille with white epoxy powder coating.
• Adjustable galvanised steel wall sleeve (230mm to 390mm) with concealed cable entry cut-out.
• High-efficiency plate axial fan.
• Air-operated external weather louvre made from durable polypropylene, light grey finish, automatically opens with fan airflow.

Impeller Details

• Ziehl-Abegg FE2owlet impellers made from pressure die-cast aluminium or high-performance composite.
• Enhanced aerodynamic design for increased efficiency.
• Dynamically balanced to ISO 14694 Grade G6.3.
• Finished in black (RAL 9005).

Motor Specifications

• Highly efficient, lightweight external rotor motors with sealed-for-life, maintenance-free ball bearings.
• Insulated to THCL 155 standard (EN 60034-5).
• Weatherproof rating IP54.
• Suitable for speed control with integral thermal overload protection.
• Operating temperature range: -20°C to +70°C.
• Electrical connection via IP55 terminal box with flying lead.

Quality and Standards

• Manufactured under BS EN ISO 9001:2008 quality management system.
• Performance tested to ISO 5801:2007 (airside) and BS 848 Part 2:1985 (sound).

Typical Applications

• Gymnasiums
• Sports halls
• Squash courts
• Light commercial environments

Performance and Electrical Data

Available in single-phase (220-240V, 50Hz) and three-phase (380-440V, 50Hz) versions. Key performance parameters include:

• Airflow rates ranging from 0.618 to 1.742 m³/s depending on model and speed.
• Static pressures up to 172 Pa.
• Overall efficiencies between 20.4% and 31.4% (ISO 12759 installation category B).
• Full load current (FLC) and input power vary by model, with detailed values provided.
• Sound power levels measured at octave bands from 63 Hz to 8 kHz, with overall sound pressure levels at 3 meters ranging from 41 to 75 dB(A).

Sound Data

Sound testing follows BS 848 Part 2:1985 at 50% peak pressure. Sound power spectra are provided in dB re-1pW for inlet and outlet at multiple octave bands. The data is intended for comparative purposes, noting that actual installation conditions may affect noise levels.

Accessories and Wiring

• Electronic and transformer controllers available for speed control.
• Wiring diagrams provided for each model.
• Accessories and detailed wiring information available via product downloads or the Elta Select information center online.

Dimensional Data

Dimensions (in mm) for the three sizes are as follows:

• SRE350: Length 526, Width 15, Sleeve adjustable 230, Height 160, Weight 22 kg.
• SRE400: Length 586, Width 15, Sleeve adjustable 230, Height 160, Weight 26 kg.
• SRE450: Length 616, Width 15, Sleeve adjustable 230, Height 160, Weight 34 kg.

Contact and Manufacturer Information

Elta Fans Limited maintains continuous product development and reserves the right to modify specifications. Contact details include phone, fax, email, and website. The company operates under ISO 9001:2008 and is a member of the HEVAC Association.