CALPEDA NR – NR4
In-line Pump
Art: NR - NR4
Description
Close-coupled, single-impeller, centrifugal pumps; electric motor with extended shaft directly connected to the pump.
Pump casing with suction and delivery connections with the same diameter and on the same axis (in-line).
Tecnical description
- Applications:
- For clean liquids, without abrasives, which are non-aggressive for the pump materials (contents of solids up to 0.2%)
- For heating, conditioning, cooling and circulation plants
- For civil and industrial applications
- When low noise operation is required (n ≈ 1450 rpm).
- Operating conditions:
- Liquid temperature from -10 °C to +90 °C
- Ambient temperature up to 40 °C
- Total suction lift up to 7 m
- Maximum permissible working pressure up to 10 bar
- Continuous duty
- Motor: 2-pole induction motor, 50 Hz (n ≈ 2900 rpm)
- NR : three-phase 230/400 V ± 10% up to 3 kW; 400/690 V ± 10% from 4 to 18,5 kW
- NRM : single-phase 230 V ± 10%; 4-pole induction motor, 50 Hz (n ≈ 1450 rpm)
- NR4: three-phase 230/400 V ± 10% up to 3 kW; 400/690 V ± 10% for 4 kW
- NRM4: single-phase 230 V ± 10%; Insulation class F; Protection IP 54; Motor suitable for operation with frequency converter from 0,75 kW for NR4 and from 1,1 kW for NR
- Classification scheme IE3 for three-phase motors from 0,75 kW; Constructed in accordance with EN 60034-1, EN 60034-30-1; EN 60335-1, EN 60335-2-41.