Motorized Impeller

- Unbeatable advantages
  - Backward curved fan impepeller reaching 74% of static efficiency
  - A design standard ideally suited for mass installation in fan sections of air handling units, especially in Fan Array systems.
  - Full coverage of sizes and available motor powers for the SR-FS fan series.
  - Significant reduction in transport costs for large quantities of fans ordered.
  - Quiet operation thanks to optimized flow control and EC motor commutation

Why Motorized Impeller?

Motorized impellers are highly specialized EC fans consisting of a motor, impeller and a separate inlet hopper. No mounting brackets and faceplate. They are an excellent solution for mass use in fan sections, especially in Fan Array systems.

Technical Specification

- Technical specification
  - General
    
    Motorized Impeller with separate inlet funnel,
    
    Support to CAV/VAV systems (factory mounted static pressure probes on fan inlet vane + precisely determined K-factor),
    
    Air performance according to ISO 5801, Installation Category: A, LwA according to ISO 13347.
  - Inlet Funnel
    
    Material: Hot-dip galvanized steel,
    
    Factory installed static pressure probes for CAV control,.
  - Impeller
    
    Type: Radial, Backward-curved, Single Inlet,
    
    Static efficiency: up to 73%
    
    Material: High Performance Composite Material (P) / Aluminum (A),
    
    Balance quality grade: G 6,3 (ISO 1940-1) and BV-3 (ANSI S2.19-1989)
  - Motor
    
    Type: Electronically Commutated, Spinning Stator,
    
    Housing: Die-cast aluminum,
    
    Protection Degree: IP54
    
    Overload Protection: Inbuilt Thermal Limit,
    
    Speed Control: 0~10VDC / Modbus RTU,
    
    Bearing: Ball Type.
- Operational Manual∟

Model	Impeller Material	Motor Capacity [kW]	dP [Pa]	Airflow [m³/h]
SR-MI-P-225-0.3	Polymer	0.3	938	1 932
SR-MI-P-225-0.7	Polymer	0.7	1 445	2 463
SR-MI-P-250-0.3	Polymer	0.3	846	2 514
SR-MI-P-250-0.7	Polymer	0.7	1 373	3 089
SR-MI-P-315-0.3	Polymer	0.3	603	3 384
SR-MI-P-315-0.7	Polymer	0.7	820	3 944
SR-MI-P-315-1.5	Polymer	1.5	1 506	5 340
SR-MI-P-315-2.5	Polymer	2.5	1 841	5 945
SR-MI-A-225-0.3	Aluminum	0.3	935	1 856
SR-MI-A-225-0.7	Aluminum	0.7	1 466	2 358
SR-MI-A-250-0.3	Aluminum	0.3	829	2 508
SR-MI-A-250-0.7	Aluminum	0.7	1 345	3 166
SR-MI-A-315-0.3	Aluminum	0.3	593	3 178
SR-MI-A-315-0.7	Aluminum	0.7	799	3 757
SR-MI-A-315-1.5	Aluminum	1.5	1 464	5 141
SR-MI-A-315-2.5	Aluminum	2.5	1 805	5 852
SR-MI-A-355-1.6	Aluminum	1.6	1 309	6 016
SR-MI-A-355-2.5	Aluminum	2.5	1 700	6 593
SR-MI-A-355-3.7	Aluminum	3.7	2 105	7 798
SR-MI-A-400-1.6	Aluminum	1.6	1 196	6 771
SR-MI-A-400-2.5	Aluminum	2.5	1 373	7 386
SR-MI-A-400-3.7	Aluminum	3.7	1 827	8 612
SR-MI-A-400-5.4	Aluminum	5.4	2 405	10 392
SR-MI-A-450-1.6	Aluminum	1.6	970	8 209
SR-MI-A-450-2.5	Aluminum	2.5	1 183	9 225
SR-MI-A-450-3.7	Aluminum	3.7	1 534	10 381
SR-MI-A-450-5.4	Aluminum	5.4	1 926	12 026
SR-MI-A-500-3.7	Aluminum	3.7	1 285	12 318
SR-MI-A-500-5.4	Aluminum	5.4	1 627	14 065
SR-MI-A-560-3.7	Aluminum	3.7	1 204	14 529
SR-MI-A-560-5.4	Aluminum	5.4	1 373	15 189

- Two impeller material options!
  
  Thanks to the development of material technology, we are able to build rotors using modern technologies:
  - Composite impellers – made by monolithic casting in sizes from 225 to 315 mm
  - Aluminum impellers – built in laser welding technology in sizes from 225 to 560 mm