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NB 250-500/437 A-F1-A-E-BAQE - 97920959

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      Product name: NB 250-500/437 A-F1-A-E-BAQE
      Product No: 97920959
      Pump speed on which pump data are based: 990 rpm
      Rated flow: 546.3 m³/h
      Rated head: 25.6 m
      Maximum head: 10 m
      Actual impeller diameter: 437 mm
      Shaft seal arrangement: Single
      Shaft diameter: 60 mm
      Code for shaft seal: BAQE
      Secondary shaft seal: NONE
      Curve tolerance: ISO9906:2012 3B
      Pump version: A
      Bearing design: Standard
      Pump housing: Cast iron
      Pump housing: EN-GJL-250
      Pump housing: A48-40 B
      Wear ring: High alloy brass(CuZn34Mn3AI2
      Impeller: Cast iron
      Impeller: EN-GJL-200
      Impeller: A48-30 B
      Shaft: Stainless steel
      Shaft: 1.4301
      Shaft: 304
      Material code: A
      Code for rubber: E
      Maximum ambient temperature: 40 °C
      Pipe connection standard: EN 1092-2
      Size of inlet connection: DN 300
      Size of outlet connection: DN 250
      Pipe connection standard: EN 1092-2
      Pressure rating for connection: PN 10
      Support block: NO
      Connect code: F1
      Pumped liquid: Water
      Liquid temperature range: 0 .. 120 °C
      Selected liquid temperature: 20 °C
      Density: 998.2 kg/m³
      Electrical data 
      Motor type: SIEMENS
      Rated power - P2: 55 kW
      Mains frequency: 50 Hz
      Rated voltage: 3 x 380-415D/660-690Y V
      Rated current: 99.0/57.0 A
      Starting current: 730-730 %
      Cos phi - power factor: 0.85
      Rated speed: 990 rpm
      Number of poles: 6
      Enclosure class (IEC 34-5): 55 (Protect. water jets/dust)
      Insulation class (IEC 85): F
      Motor protec: PTC
      Motor No: 83C15438
      Mount. design. acc. IEC 34-7: IM B35
      Minimum efficiency index, MEI ≥: 0.48
      Net weight: 1150 kg
      Gross weight: 1270 kg
      Shipping volume: 2.4 m³

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