Grundfos NB 250-400/405 AASF1A1ESBQQEYW3 98938357, 5712603902876 Endsuction close coupled single stage
- Rated flow: 896.4 m³/h
- Rated head: 50.58 m
- Maximum operating pressure: 10 bar
- IE Efficiency class: IE4
- Rated power - P2: 160 kW
- Rated voltage: 3 x 380-420D/660-725Y V
- Mains frequency: 50 Hz
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Grundfos NB 250-400/405 AASF1A1ESBQQEYW3 98938357 Endsuction close coupled single stage
Product code: 98938357
EAN Number: 5712603902876
Non-self-priming, single-stage, centrifugal volute pump designed according to ISO 5199 with dimensions and rated performance according to EN 733 (10 bar). Flanges are PN 10 with dimensions according to EN 1092-2. The pump has an axial suction port, radial discharge port, horizontal shaft and a back pull-out design enabling removal of the motor, motor stool, cover and impeller without disturbing the pump housing or pipework. The unbalanced rubber bellows seal is according to DIN EN 12756. The pump is close-coupled to a fan-cooled asynchronous motor.
| General | EAN number | 5712603902876 |
| Product No | 98938357 | |
| Material | Code Material | A1 |
| Code for rubber | E | |
| Elastomere GLRD | E | |
| IMPELLER_MATR_QLTY_EN | EN-GJL-200 | |
| IMPELLER_MATR_QUALITY_ASTM | ASTM class 30 | |
| Impeller | Cast iron | |
| Internal pump house coating | CED | |
| Material code | A1 | |
| PH_MATR_QUALITY_ASTM | ASTM class 35 | |
| PH_MATR_QUALITY_EN | EN-GJL-250 | |
| PUMP_SHAFT_MATR_QLTY_ASTM | SAF 2205 | |
| Pump housing | Cast iron | |
| Shaft | Stainless steel | |
| Shaft | EN 1.4462 | |
| WEAR_RING_MATR_QLTY_EN | CuZn34Mn3AI2Fe1-C | |
| Wear ring | Brass | |
| Pump | Actual impeller diameter | 405 mm |
| Bearing design | Standard | |
| Code Ausführung | AS | |
| Code for shaft seal | BQQE | |
| Curve tolerance | ISO9906:2012 3B | |
| Nominal impeller diameter | 400 | |
| Primary shaft seal | BQQE | |
| Pump speed on which pump data are based | 1490 1/min | |
| Pump version | AS | |
| Rated flow | 896.4 m³/h | |
| Rated head | 50.58 m | |
| Shaft diameter | 48 mm | |
| Shaft seal arrangement | Single | |
| Connect | Bearing lubrication | Grease |
| Code Anschl. Art | F1 | |
| Connect code | F1 | |
| Maximum ambient temperature | 55 °C | |
| Maximum operating pressure | 10 bar | |
| Pipe connection standard | EN 1092-2 | |
| Pressure rating for connection | PN 10 | |
| Pump housing with feet (Yes/No) | Y | |
| Size of inlet connection | DN 300 | |
| Size of outlet connection | DN 250 | |
| Support block (Yes/No) | Y | |
| Control | Frequency converter | None |
| Pressure sensor | N | |
| Motor | Bearing insulation type N-end | N |
| Built-in motor protection | PTC | |
| Cos phi - power factor | 0.85 | |
| Enclosure class (IEC 34-5) | IP55 | |
| IE Efficiency class | IE4 | |
| IE efficiency | IE4 96,6% | |
| Insulation class (IEC 85) | F | |
| Mains frequency | 50 Hz | |
| Motor No | 92910083 | |
| Motor efficiency at 1/2 load | 96.6 % | |
| Motor efficiency at 3/4 load | 96.8 % | |
| Motor efficiency at full load | 96.6 % | |
| Motor type | INNOMOTICS | |
| Mount. design. acc. IEC 34-7 | IM B35 | |
| Number of poles | 4 | |
| Rated current | 280 A | |
| Rated power - P2 | 160 kW | |
| Rated speed | 1490 1/min | |
| Rated voltage | 3 x 380-420D/660-725Y V | |
| Starting current | 790 % | |
| Medium | Density | 998.2 kg/m³ |
| Liquid temperature range | -25 .. 120 °C | |
| Selected liquid temperature | 20 °C | |
| Other | Danish VVS No. | 386069414 |
| Gross weight | 1910 kg | |
| Herkunftsland | ||
| Language on pump nameplate | GB | |
| Minimum efficiency index, MEI ≥ | 0.50 | |
| Net weight | 1820 kg | |
| Shipping volume | 2.55 m³ | |
| Zolltarif Nr. | 84137051 |