Nocchi CPS3-20

Summary

Product identification

The Nocchi CPS3-20 series consists of three-phase variable speed pressure booster sets with two electric pumps.

Overview

The CPS3-20 series offers a reliable and simple solution for residential and industrial applications, designed for easy installation and low energy consumption. The system features two electric pumps installed in parallel, each equipped with an electronic control device (CPS3) integrated directly on the motor. This device varies the pump's frequency to maintain constant pressure despite changes in water demand.

When system pressure drops below a set threshold, the module starts the pump to restore the set point. The pump's rotation speed adjusts according to demand, increasing with higher water requirements up to its maximum setting. If further output is needed, the second pump activates in emergency mode to stabilize pressure. As water demand decreases, the speed of the last activated pump is reduced until it shuts down. The first activated pump continues until its minimum set speed is reached, then shuts down if no further pressure drops are detected. The CPS3-20 is equipped with five operating modes to meet various operational needs.

Operating limits

• Maximum ambient temperature: +50°C
• Protection rating: IP55-VLR IP44-MULTINOX-VE

Electrical

• Inverter power supply voltage: 3x380-500 Vac
• Inverter output voltage: 3x380-500 Vac
• Maximum output power: 2x5.5 kW - 2x7.5 kW
• Input frequency: 50/60 Hz
• Maximum nominal output current: 11.5 Amp - 16 Amp
• Inlet filter compliant with EMC directive
• Connectivity: RS 485 serial interface
• Optional contacts: 3 (external set-point, alarm, system inhibition)

Mechanical / Hydraulic

Construction Materials

• BASE: In galvanized sheet steel complete with vibration damper feet.
• SUCTION MANIFOLD: In AISI 304 stainless steel with 2 ball valves.
• DELIVERY MANIFOLD: In AISI 304 stainless steel with:
  • 2 ball valves
  • 2 check valves
  • 1 pressure gauge
  • 2 pressure sensors

Components

• Pressure transducer: 0-5 Volt 0-10 bar

Performance Data

Detailed hydraulic performance tables, including flow rates (Q in L/min and m³/h), head (H in m.c.a./m.w.c.), pump power (P2 in HP and kW), voltage, and current (In in A) for various models (e.g., MXV 200/110, VLR 2B-130 A, VLR 8-60 A, VLR 16-40 F, VLR 32-2 F), are available in the official PDF.

Overall Dimensions and Weights

Detailed tables providing dimensions (A, B, C, E, F, H, I in mm) and weights (kg) for all models are available in the official PDF.

Connection Sizes

Inlet (DNA) and outlet (DNM) connection sizes vary by model and are specified in the dimension tables within the official PDF (e.g., 2"1/2, 2", 3", DN 80, DN 100).

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Disclaimer: This summary is based on extracted text and may not include all figures, footnotes, or the latest revisions from the original OEM PDF. For contractual data and complete specifications, always refer to the official OEM PDF revision used on your project.

Official datasheet (PDF)

Lenntech datasheet mirror