Grundfos NB 125-500/493 ASF2ABQQE

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

Applications

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

Features and benefits

• 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

Specifications

Productnaam NB 125-500/493 ASF2ABQQE
Productnummer 98975872
EAN nummer 5712604551028

Materials

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.

Installation details

Maximum ambient temperature 55 ° C
Maximum operating pressure 16 bar
Pipe connection standard EN 1092-2
Size of the suction connection DN 150
Pressure connection size DN 125
Pressure stage for pipe connection PN 16
Bearing Lubrication Grease
Pump house with feet Yes
Filling block Y
Code for pipe connection F2

Medium

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

Electrical data

Engine type SIEMENS
IE efficiency class IE3
Nominal power - P2 30 kW
Mains frequency 50 Hz
Nominal voltage 3 x 380-420D / 660-725Y V.
Nominaalstroom 58,0-55,0/33,5-32,0 A
Starting current 660-660 %
Cos phi – power factor 0.83
Rated speed 980 rpm
Rendement IE3 92,9%
Motorrendement bij nominale belasting 92.9-92.9 %
Motor efficiency at 3/4 power 93.6-93.6 %
Motor efficiency at half power 93.5-93.5 %
Pool number 6
Enclosure class (IEC 34-5) IP55
Insulation class (IEC 85) F.
Motor protection PTC
Motor Nr. 83W15432
Mont. regulations according to IEC 34-7 IM B35

Other information

Minimum Efficiency Index, MEI ≥ 0.50
Netto gewicht 791 kg
Bruto gewicht 835 kg
Transport volume 1.25 m³
Country of origin HU
HS code 84137051
Frequency converter NONE
Pressure sensor N

Grundfos NB 125-500/493 ASF2ABQQE