Grundfos NB 65-250/254 AF2ABQQE

Grundfos NB 65-250/254 AF2ABQQE

Grundfos offers an almost unlimited range of closely coupled (NB / NBG) end suction pumps, which are very suitable for challenging applications due to their robustness and reliability. The Grundfos NB and NBG pumps are single-stage centrifugal standard block pumps with axial suction port, radial discharge port and a horizontal shaft and are not self-priming. The standard and block pumps are extremely reliable, energy efficient and can be used for a wide range of applications due to enormous configuration options.

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Extensive product information

• Water supply
• Industrial pressure boosting
• Industrial liquid transport
• Indoor climate (air conditioning, heating and ventilation)
• Irrigation

• Capacity up to 1300 m3/h
• Head up to 160 mWk
• Optimized hydraulics in housing and impeller ensures unimpeded fluid flow
• O-ring seal between pump housing and cover, so no risk of leakage
• Highly corrosion resistant
• Available with IE2 and IE3 motors
• Available with various shaft seal and material variants
• PN 10, 16 and 25 bar

Product name NB 65-250/254 AF2ABQQE
Product number 98150990
EAN number 5711490534863

Pump housing Cast iron
Pump housing EN-GJL-250
Pump housing ASTM class 35
Wear ring Brass
Impeller Cast iron
EN-GJL-200
ASTM class 30
Shaft Stainless steel
EN 1.4301
AISI 304
Internal coating pump housing CED
Material code A
Code for rubber E.

Maximum ambient temperature 55 ° C
Maximum operating pressure 16 bar
Pipe connection standard EN 1092-2
Size of the suction connection DN 80
Pressure connection size DN 65
Pressure stage for pipe connection PN 16
Bearing Lubrication Grease
Pump house with feet Yes
Filling block N
Code for pipe connection F2

Fluid handled Water
Liquid temperature range -25 .. 120 °C
Medium temperature during operation 20 ° C
Density 998.2 kg / m³

Engine type SIEMENS
IE efficiency class IE3
Rated power - P2 5.5 kW
Mains frequency 50 Hz
Nominal voltage 3 x 380-420D / 660-725Y V.
Rated current 11.13-10.1/6.4-5.8 A
Starting current 720-720 %
Cos phi – power factor 0.84
Rated speed 1475 rpm
Efficiency IE3 89.6%
Motor efficiency at rated load 89.6-89.6 %
Motor efficiency at 3/4 power 90.1-90.1 %
Motor efficiency at half power 89.5-89.5 %
Pool number 4
Enclosure class (IEC 34-5) IP55
Insulation class (IEC 85) F.
Motor protection PTC
Engine No. 83V15217
Mont. regulations according to IEC 34-7 IM V1

Minimum Efficiency Index, MEI ≥ 0.70
Net weight 134 kg
Gross weight 156 kg
Transport volume 0.509 m³
Frequency converter NONE

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