VC 4-75 VZ #6.3 w/motor 4VR 132 M4 11 kW 1500 rpm, execution 1

Series VC 4-75 #6,3 low-pressure centrifugal fan (VR 88-72.1-5.5, VR 80-75-5) with Electric motor 4VR 132 M4 11.0 Power kW 1500 Vol./Min electric motor, manufactured from dissimilar materials for explosive atmospheres.

Intended Application:

This fan is intended for ventilation or air-conditioning systems handling gas–steam–air explosive mixtures of the 1st and 2nd categories of groups T1, T2, T3 according to the classification of the “Rules for Electrical Installations” (PVE), which do not cause accelerated corrosion of the materials in the flow parts of the fans. These mixtures must not exceed a temperature of 80 °C, and the content of fibrous materials, sticky substances, dust, and other solid impurities must not exceed 100 mg/m³ under moderate (U) climate (placement category 3) and tropical (T) climate (placement category 2) conditions in accordance with DSTU 15150. Ambient temperature is permitted from −40 °C to +40 °C (+40 °C when equipped with tropical-design electric motors).

Housing and Impeller Blade Material:

The housing and impeller blades of the explosion-proof fans are manufactured from material pairs (steel–brass or steel–aluminum) that form a non-sparking combination under frictional conditions, in accordance with DSTU 22782.0-81.

Configuration and Modular Components (available separately):

• Fan housing VC 4-75 #6,3 (VR 88-72.1-5.5, VR 80-75-5) without electric motor
• Impeller wheel of fan VC 4-75 #6,3 (VR 88-72.1-5.5)
• Fan casing (scroll) VC 4-75 #6,3 (VR 80-75-5)
• Electric motor Electric motor 4VR 132 M4 11.0 Power kW 1500 Vol./Min for fan VC 4-75 #6,3

General Characteristics of Series VC 4-75 #6,3 Centrifugal Fans with Electric motor 4VR 132 M4 11.0 Power kW 1500 Vol./Min, Manufactured from Dissimilar Metals:

• Low pressure
• Single-sided suction
• Backward-curved blades
• Number of blades: 12
• Direction of rotation: right and left
• Manufactured in accordance with TU U 28.2-24881057-003:2023
• Construction material: dissimilar metals

Applications of Series VC 4-75 VZ #6.3 w/motor 4VR 132 M4 11 kW 1500 rpm Fans (VR 88-72.1-5.5, VR 80-75-5):

• Air-conditioning systems
• Ventilation systems
• Air-heating systems
• Other sanitary and industrial purposes

Operating Conditions:

Series VC 4-75 VZ #6.3 w/motor 4VR 132 M4 11 kW 1500 rpm centrifugal fans operate under moderate climate conditions at ambient temperatures from −40 °C to +40 °C. The conveyed medium must not exceed 80 °C.

Principle of Operation:

Air, by means of energy imparted by the impeller blades, enters the fan under centrifugal force at a 90° angle and is directed radially into the scroll-shaped casing. Within the casing, the pressurized air follows a spiral path and is discharged through the fan outlet.

Delivery Set of Series VC 4-75 #6,3 Fans Made of Dissimilar Metals:

• Scroll-shaped casing
• Impeller wheel (front and rear discs, 12 sheet blades, and hub)
• Support frame (welded stand with hole for mounting on vibration isolators or foundation)
• Collector (conical, attached to the inlet nozzle; overlap between collector and impeller front disc is adjusted by axial movement within the inlet nozzle)
• Electric motor Electric motor 4VR 132 M4 11.0 Power kW 1500 Vol./Min

Position of Radial Fan Housings for Right (PR) and Left (LIV) Rotation, Viewed from the Suction Side:

• Right rotation
• Left rotation

Note on Placement Categories Based on Climatic Conditions:

1st category: operation in the open air (influence of combined climatic factors characteristic of the given macroclimate region);

2nd category: operation under a canopy or in volumes where temperature and humidity fluctuations do not differ significantly from those outdoors and there is relatively free access to external air, e.g., tents, vehicle bodies, trailers, uninsulated metal enclosures, and in enclosures of 1st category products (absence of direct solar radiation and precipitation);

3rd category: operation in enclosed volumes with natural ventilation without artificially regulated climatic conditions, where temperature and humidity fluctuations and the influence of dust and sand are significantly less than outdoors (e.g., insulated metal, stone, concrete, wooden enclosures; absence of precipitation and direct solar radiation; significant reduction in wind; reduced or absent diffused solar radiation and condensation);

4th category: operation in spaces with artificially regulated climatic conditions, such as closed heated or cooled and ventilated production premises, conditioned or partially conditioned air environments, and well-ventilated underground spaces (absence of direct solar radiation, precipitation, wind, sand, and dust; absence or significant reduction of diffused solar radiation and condensation);

5th category: operation in spaces with elevated humidity (e.g., unheated and unventilated underground spaces including mines, basements, ground burials, ship holds, and other areas where water may persist or frequent condensation may occur on walls and ceilings; e.g., certain holds, textile and hydrometallurgical production areas).