Grundfos NB 125-315/297 A-F2-A-E-GQQE
Product ID: 98305862
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Grundfos NB 125-315/297 A-F2-A-E-GQQE
Grundfos NB 125-315/297 A-F2-A-E-GQQE
NB 125-315/297 A-F2-A-E-GQQE
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 shaft seal with reduced seal face 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: | -25 .. 60 °C | |
| Liquid temperature during operation: | 20 °C | |
| Density: | 998.2 kg/m³ | |
| Technical: | ||
| Speed for pump data: | 2980 rpm | |
| Rated flow: | 445 m³/h | |
| Rated head: | 112.1 m | |
| Actual impeller diameter: | 297 mm | |
| Impeller nom: | 315 mm | |
| Primary shaft seal: | GQQE | |
| 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: | 55 °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: | SIEMENS | |
| IE Efficiency class: | IE3 | |
| Rated power - P2: | 200 kW | |
| Mains frequency: | 50 Hz | |
| Rated voltage: | 3 x 380-420D/660-725Y V | |
| Rated current: | 345-310/200-180 A | |
| Starting current: | 720-720 % | |
| Cos phi - power factor: | 0,92 | |
| Rated speed: | 2980 rpm | |
| Efficiency: | IE3 95,8% | |
| Motor efficiency at full load: | 95.8-95.8 % | |
| Motor efficiency at 3/4 load: | 96.0-96.0 % | |
| Motor efficiency at 1/2 load: | 95.7-95.7 % | |
| Number of poles: | 2 | |
| Enclosure class (IEC 34-5): | 55 Dust/Jetting | |
| Insulation class (IEC 85): | F | |
| Lubricant type: | Grease | |
| Others: | ||
| Minimum efficiency index, MEI �?�: | 0.69 | |
| ErP status: | EuP Standalone/Prod. | |
| Net weight: | 1400 kg | |
| Gross weight: | 1480 kg | |
| Shipping volume: | 2.35 m³ | |