Centrifugal roof fan

DRD 31/64 B

No longer available for delivery
Article number: 0087.0151
Manufacturer: MAICO
Centrifugal roof fan, vertical air outlet, DN 315, three-phase AC, pole-changeable
Application examples: Production facility, Workplace, Commercial premises, Industrial building, Restaurant
Product data sheet
DRD 31/64 B IM0009963.PNG Centrifugal roof fan, vertical air outlet, DN 315, three-phase AC, pole-changeable

Characteristic curve

DRD 31/64 B - Characteristic curve

Dimensioned drawing

DRD 31/64 B - Dimensioned drawing [mm]

  1. Clear width
  2. External duct diameter
  3. Number of holes: 8

Technical data

DRD 31/64 B - Technical data

Article DRD 31/64 B
Air flow volume 2.200 m³/h / 3.400 m³/h
Rotating speed 930 1/min / 1.425 1/min
Speed controllable
Reversing capacity
Type of voltage Three-phase AC
Rated voltage 400 V
Nominal output 195 W / 560 W
Inom 0,4 A / 1,1 A
Imax 1,3 A / 1,3 A
Degree of protection IP 55
Insulation class B
Pole-changeable
Number of poles at high speed 4
Number of poles at low speed 6
Mains cable 5 x 1,5 mm²
Installation site Roof
Installation position vertical
Material Sheet steel, galvanised
Weight 42
Weight including packaging 47,58 kg
Shutter integrated
Type of shutter Airstream-operated opening/closing
Nominal size 315 mm
Width with packaging 750 mm
Height with packaging 580 mm
Depth with packaging 750 mm
Airstream temperature at nominal current -20 °C up to 60 °C
Airstream temperature at IMax 60 °C
Packing unit 1 piece
Range C
GTIN (EAN) 4012799871514
Article number 0087.0151

 

63 Hz

125 Hz

250 Hz

500 Hz

1 kHz

2 kHz

4 kHz

8 kHz

Total

LWA5, low (dB(A))

46

57

58

57

56

58

65

43

68

LWA5, high (dB(A))

49

65

76

70

67

66

75

60

80

LWA8, low (dB(A))

48

60

61

63

64

61

65

53

70

LWA8, high (dB(A))

51

68

72

75

75

71

73

62

81

LWA5= free inlet sound power level in dB.

LWA8= housing and free outlet sound power level in dB.

Accessories

DRD 31/64 B - Accessories

General accessories

Product description

Productdescription

DRD 31/64 B

short description

Centrifugal roof fan, vertical air outlet, DN 315, three-phase AC, pole-changeable

Product description

Features

  • Attractive housing made of galvanised sheet-steel.
  • Cover easily detachable for cleaning purposes.
  • Galvanized protective grille on the discharge side, protection against accidental contact in accordance with DIN EN ISO 13857.
  • Sturdy eyebolts enable transport by crane.
  • Impeller with blades curved to the rear, dynamically balanced at two levels, in accordance with performance level 6.3, DIN ISO 1940.
  • Impeller made of glass-fibre filled polypropylene.

Three-phase AC motor

  • DRD model series.
  • Rated voltage 400 V, 50 Hz.
  • Thermal overload protection as standard feature, except: available on request for pole-changeable fans.
  • Potential-free terminal connections, which must be connected to an MV 25 protective motor switch or the control circuit of a contactor.
  • Pole-changeable fans: Ensure overload protection is guaranteed by a protective motor switch provided by the customer.
  • DRD 25/64 B: Star / delta switch must be provided by the customer.

Electrical connection

  • To terminal block in the service switch.

Safety instructions

  • The fan can be operated only if the protection against accidental contact with the impeller is guaranteed to be in accordance with DIN EN 13857 for fans with a free inlet.

Special versions

  • The following special versions are available at extra cost on request:
    • Special voltages and frequencies.
    • Single-phase motors with thermal contacts or PTC thermistor, with potential-free terminal connections.
    • Fans with enhanced anti-corrosion protection.
  • Information on operation at temperatures occasionally below -20°C available upon request.
  • If operating with frequency converters, the factory must be consulted.
  • Feasibility must be checked in each case.

Table of contents

Wiring diagram

DRD 31/64 B - Wiring diagram

Predecessor - successor

Notes
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