STVB
Table of contents:
Product description
Axial fans with impellers fitted with hubs, allowing the blade angle to be changed during operation. Impellers fitted with standard blades. Capacity adjustable by changing the blade angle. Optionally available in high temperature versions up to +85°C. Weather resistant.
- Standard diameter range: Ø800 – 1000mm
- Capacity range: 20000 – 50400m3/h
- Operating temperatures: -20 to +55°C
- Installed motor powers: 2.2 – 5.5kW
- Motor speeds: 1000 min-1
- Motors fitted with maintenance-free bearings
- Motors adapted to speed control by means of a frequency converter as standard
- Steel housings
- Corrosion-protected housing – powder-coated
- Outlet protected with protective mesh
Optional executions
- High-temperature temp. max: 85°C
- Casing made of stainless sheet
- Flow parameters other than standard
Construction
Housing
Motor
Rotor
Housing:
- Machined from structural steel sheet. Fitted with a flange and inlet confuser rolled from the casing shell and provided with connection holes
- Equipped with bolted or welded motor shelf
- Protected against corrosion by powder coating. Painted in colour: RAL 9005 (black)
Housing optional:
- Corrosion protection by hot-dip galvanising
- Housing made of stainless steel, grade 1.4301
- Aluminium enclosure
- Painted in another RAL colour
Motor:
- Asynchronous 3 phase
- Supply voltage: 3~ 230/400V; 400/690V
- Efficiency class : IE3
- Insulation class: F
- Degree of protection: IP 55
- Die-cast aluminium motor housing
Motor optional execution:
- Supply voltage: 440V, 460V, Power frequency: 60Hz
- Efficiency class: IE4
- Motor insulation class: H
- Degree of protection: IP 56, IP66
- Winding temperature sensors
Rotor:
- Blades made of composite, hub made of die-cast aluminium
- High flow capacity in the low pressure range
- Dynamically balanced to class G-6.3 according to ISO 1940-1
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