WDEx roof fan

WDEx roof fan

 

WDEx type anti-explosion roof fans are intended for the ventilation of the rooms where explosive atmospheres of gases, vapours or mists can be formed. They ensure the safety level required for the group II and category 2 units, so for the units that can operate at places other than mining plants where there is the risk of methane or carbon dust explosion. The additional condition: the occurrence of the explosive atmosphere is unlikely and it can occur but only within a short period.
The fans are intended for the operation in such room as: spraying lines (liquid pants), dry cleaners, chemical warehouses etc., classified in part or in whole as the zone 2.

Product description

 

The series of WDEx type fans includes 5 sizes: 16; 20; 25; 31,5; 40.
Every fan is equipped with:

  • electrical part: motor - increased safety,
  • mechanical part: 
  • statically and dynamically balanced metal centrifugal impeller,
  • non-metallic housing.

Remark: The non-metallic housing is made of special plastic with conductive coat for removing redundant electrostatic charges.

Working conditions

WDEx fans are intended for the operation at the ambient temperature within -20 to +40OC. The admissible temperature on the surface of the motor element is T3=200OC, therefore, when selecting it should be noted that the lowest self-ignition temperature of the explosive atmosphere is higher than the afore-mentioned temperature T3.

WDEx-16

 

Three-phase motors

Motor type

KPER-63G4

Voltage [V]

400

Motor power [kW]

0,18

Current [A]

0,66

Revolutions [rpm]

1380

WDEx-16

WDEx-20

 

Three-phase motors

Motor type

KPER-71K4

Voltage [V]

400

Motor power [kW]

0,25

Current [A]

0,79

Revolutions [rpm]

1380

WDEx-20

WDEx-25

 

Three-phase motors

Motor type

KPER-71K4

Voltage [V]

400

Motor power [kW]

0,25

Current [A]

0,79

Revolutions [rpm]

1380

WDEx-25

WDEx-31,5

 

Three-phase motors

Motor type

KPER-80K6 KPER-80K4

Voltage [V]

400

400

Motor power [kW]

0,37

0,55

Current [A] 

1,3

1,59

Revolutions [rpm]

920

1380
WDEx-31,5

WDEx-40

 

Three-phase motors

Motor type

KPER-90S8 KPER-90L6

Voltage [V]

400

400

Motor power [kW]

0,37

0,95

Current [A] 

1,69

2,85

Revolutions [rpm]

700

925
WDEx-40

Files to download

WDEx catalogue sheet pdf 20.02.2017 1,24MB
Fans control and automatics pdf 27.01.2017 1,98MB
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