P.HTH

PTH three-phase pump for open circuit systems for heat pumps (380-415V / 50Hz)

4” complete submersible pump, made of technopolimer ZDS hydraulic part, Franklin three-phase encapsulated water-cooled motor and supply cable in different lenghts, especially developed for installation in open circuit systems for heat pumps. It requires a start, operation and protection system.
This motor achieves between 5 to 7% points higher efficiency than standard sumbersible motors of the same power rating. This special and unique combination of products offers low power consuption and high efficiency, and represents the best system for heating applications.
 

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  • kW: 0,25
  • Voltage range: 380-415V / 50Hz
  • Voltage tolerance 50Hz from nominal: +6% / -10% Un
  • Degree of protection: IP 68
  • Maximum quantity of suspended sand: 120 g/m³
  • Insulation: B
  • Rated ambient temperature: max 30° C
  • Cooling flow: min 8 cm/sec
  • Maximum starts/h: 20, equally distributed
  • Mounting: vertical/horizontal, shaft upwards
  • Maximum delivery (Q): 4.200 l/h
  • Maximum head (H): 50 m
  • Maximum immersion depth: 50 m
  • Outlet diameter: 1" ¼ G-F
  • Allowed range of water pH: 6,4 - 8,0
  • Protection requirements: For these Complete Solutions an overload protection and a motor start and run control unit, must be installed according to EN 60947-4-1 trip time < 10 sec. at 5 x IN.
P.HTH

Model performance

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Information on a proper installation

  • If you are using a generator with an internal combustion engine, it is necessary that the generator’ s power measured in kW (in continuous delivery) is three times the rated power in kW of the submersible pump.
  • We recommend to install a proper cooling jacket in installations bigger than 10 cm, to guarantee the correct motor cooling flow.

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