Grundfos NB 125-250/262 A-F2-A-E-BAQE
Product ID: 97837055
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Grundfos NB 125-250/262 A-F2-A-E-BAQE
Grundfos NB 125-250/262 A-F2-A-E-BAQE
NB 125-250/262 A-F2-A-E-BAQE
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 16 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.
| Specification | Value | |
|---|---|---|
| Liquid: | ||
| Pumped liquid: | Water | |
| Liquid temperature range: | 0 .. 120 °C | |
| Liquid temperature during operation: | 20 °C | |
| Density: | 998.2 kg/m³ | |
| Technical: | ||
| Speed for pump data: | 1470 rpm | |
| Rated flow: | 273 m³/h | |
| Rated head: | 19.9 m | |
| Actual impeller diameter: | 262 mm | |
| Impeller nom: | 250 mm | |
| Primary shaft seal: | BAQE | |
| Secondary shaft seal: | NONE | |
| Curve tolerance: | ISO9906:2012 3B | |
| Materials: | ||
| Pump housing: | Cast iron | |
| EN-GJL-250 | ||
| ASTM A48-40 B | ||
| Impeller: | Cast iron | |
| EN-GJL-200 | ||
| ASTM A48-30 B | ||
| Shaft: | Stainless steel | |
| 1.4301 | ||
| 304 | ||
| Rubber: | EPDM | |
| Wear ring mat.: | High alloy brass(CuZn34Mn3AI2 | |
| Installation: | ||
| Maximum ambient temperature: | 60 °C | |
| Maximum operating pressure: | 16 bar | |
| Flange standard: | EN 1092-2 | |
| Pump inlet: | DN 150 | |
| Pump outlet: | DN 125 | |
| Pressure rating: | PN 16 | |
| Electrical data: | ||
| Motor type: | MMG180LA | |
| IE Efficiency class: | IE2 | |
| Rated power - P2: | 22 kW | |
| Mains frequency: | 50 Hz | |
| Rated voltage: | 3 x 380-420D/660-725Y V | |
| Rated current: | 42,5-38,5/24,4-22,2 A | |
| Starting current: | 750-750 % | |
| Cos phi - power factor: | 0,9 | |
| Rated speed: | 1470 rpm | |
| Efficiency: | IE2 91,8% | |
| Motor efficiency at full load: | 91.8-91.8 % | |
| Motor efficiency at 3/4 load: | 91.8-91.8 % | |
| Motor efficiency at 1/2 load: | 91.1-91.1 % | |
| Number of poles: | 4 | |
| Enclosure class (IEC 34-5): | 55 (Protect. water jets/dust) | |
| Insulation class (IEC 85): | F | |
| Lubricant type: | Grease | |
| Others: | ||
| Minimum efficiency index, MEI �?�: | 0.62 | |
| ErP status: | EuP Standalone/Prod. | |
| Net weight: | 307 kg | |
| Gross weight: | 366 kg | |
| Shipping volume: | 1.11 m³ | |