Centrifugal Pump Grundfos TPD50-230 Single-stage, close-coupled, in-line centrifugal volute twin-head pump with in-line suction and discharge ports of identical diameter. The twin-head pump is designed with two parallel power-heads.
Centrifugal Pump Grundfos TPD50-230 is of the top-pull-out design, i.e. the power head (motor, pump head and impeller) can be removed for maintenance or service while the pump housing remains in the pipework. Each power head is fitted with an unbalanced rubber bellows seal. The shaft seal is according to EN 12756. Pipework connection is via PN 16 DIN flanges (EN 1092-2 and ISO 7005-2). Each power head is fitted with a fan-cooled asynchronous motor of indentical size.
TECHNICAL DATA :
- Controls:
- Frequency converter: None
- Liquid:
- Pumped liquid: Water
- Liquid temperature range: 0 .. 120 °C
- Selected liquid temperature: 20 °C
- Density: 998.2 kg/m³
- Technical:
- Pump speed on which pump data are based: 1455 rpm
- Rated flow: 31.7 m³/h
- Rated head: 15.7 m
- Actual impeller diameter: 260 mm
- Materials:
- Pump housing: Cast iron
- Impeller: Cast iron
- Installation:
- Range of ambient temperature: -20 .. 55 °C
- Maximum operating pressure: 16 bar
- Max pressure at stated temp: 16 bar / 120 °C
- Type of connection: DIN
- Size of connection: DN 50
- Pressure rating for connection: PN 16
- Port-to-port length: 440 mm
- Flange size for motor: FF215
- Electrical data:
- Motor type: SIEMENS
- Rated power – P2: 3 kW
- Mains frequency: 50 Hz
- Rated voltage: 3 x 380-420D/660-725Y V
- Rated current: 5.9/3.45 A
- Starting current: 880 %
- Cos phi – power factor: 0.81
- Rated speed: 1460 rpm
- IE efficiency: IE4 91,0%
- IE Efficiency class: IE4
- Motor efficiency at full load: 91.0 %
- Motor efficiency at 3/4 load: 91.0 %
- Motor efficiency at 1/2 load: 90.0 %
- Number of poles: 4
- Enclosure class (IEC 34-5): IP55
- Insulation class (IEC 85): F
