Aspri-ESD

Summary

Product identification

The Aspri ESD B is a surface horizontal pump with a built-in Variable Frequency Drive (VFD).

Applications

• Constant water supply in dripping irrigation installations.
• Industrial applications requiring constant pressure.

Operation principle

The VFD adjusts the motor speed according to installation demand to supply constant pressure. An input signal is received from a pressure transducer installed on the discharge pipe. The Speedrive (VFD) includes protections for the pump against dry running, temperature, and over intensity.

Electrical

• Voltage range (M2 models):
  • Low voltage disconnect: 180 V
  • Low voltage automatic reset: 195 V
  • High voltage disconnect: 270 V
  • High voltage automatic reset: 250 V
• Voltage range (T2 models):
  • Low voltage disconnect: 310 V
  • Low voltage automatic reset: 335 V
  • High voltage disconnect: 485 V
  • High voltage automatic reset: 475 V

Mechanical / hydraulic

All ESD pumps are supplied with a Speedrive and a pressure transducer. A pressure vessel must be fitted on every ESD unit.

• Hydraulic Performance Models:

  • Aspri-ESD 15.5B: P2 0.75 kW, Vfd M2/T2, Suction 1”, Discharge 1”
  • Aspri-ESD 25.4B: P2 0.75 kW, Vfd M2/T2, Suction 1”, Discharge 1”
  • Aspri-ESD 25.5B: P2 1.1 kW, Vfd M2/T2, Suction 1”, Discharge 1”
  • Aspri-ESD 35.4N: P2 1.1 kW, Vfd M2-T2, Suction 11/4”, Discharge 11/4”
  • Aspri-ESD 35.5N: P2 1.5 kW, Vfd M2/T2, Suction 11/4”, Discharge 11/4”
  • Aspri-ESD 35.6N: P2 2.2 kW, Vfd T2, Suction 11/4”, Discharge 11/4”
  • Aspri-ESD 45.3N: P2 1.1 kW, Vfd M2/T2, Suction 11/2”, Discharge 11/4”
  • Aspri-ESD 45.4N: P2 1.5 kW, Vfd M2/T2, Suction 11/2”, Discharge 11/4”
  • Aspri-ESD 45.5N: P2 2 kW, Vfd T2, Suction 11/2”, Discharge 11/4”

• Pressure Transducer: 4-20 mA (10 bar)

• Minimum Pressure Vessel Sizes:

  • Prisma 15: 8 ltrs
  • Prisma 25: 18 ltrs
  • Prisma 35: 18 ltrs
  • Prisma 45: 24 ltrs

• Dimensions and Weights:

  • Aspri ESD 15 B 5M: A 235, B 285, C 202, D 74, E 110, F 207, G 220, H 73, I 51, J Ø8, 13 Kg
  • Aspri ESD 15 B 5T: A 235, B 285, C 202, D 74, E 110, F 207, G 220, H 73, I 51, J Ø8, 13 Kg
  • Aspri ESD 25 B 4M: A 228.5, B 279, C 225, D 82, E 127, F 207, G 213, H 75, I 59, J Ø8, 16.5 Kg
  • Aspri ESD 25 B 4T: A 228.5, B 279, C 225, D 82, E 127, F 207, G 213, H 75, I 59, J Ø8, 16.5 Kg
  • Aspri ESD 25 B 5M: A 255, B 328, C 240, D 82, E 127, F 207, G 227, H 79, I 59, J Ø8, 18 Kg
  • Aspri ESD 25 B 5T: A 255, B 328, C 240, D 82, E 127, F 207, G 227, H 79, I 59, J Ø8, 18 Kg
  • Suction and discharge connections for Aspri ESD 15 B and Aspri ESD 25 B models are G 1” ISO 228/1.

Materials and equipment

Materials are as per the pump and Speedrive pages (not detailed in this extract). Equipment includes pumps supplied with integrated VFD and an included pressure transducer.

Performance curves

Performance area charts for Aspri ESDM B and Aspri ESD B at 2900 rpm are available in the official PDF, showing relationships between Q [l/min, m³/h, Imp g.p.m., U.S. g.p.m.] and H [mwc, kPa, ft]. See the official PDF for exact tabulated values.

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Disclaimer: This summary is based on extracted text and may miss figures, footnotes, or revisions present in the full OEM PDF. Contractual data must always match the specific OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror