pump calpeda NR EI 50/250A/B

	pump calpeda NR EI 50/250A/B
Pressure:	76.9m
Flow:	30m3/h
Pump power:	15 kW
Pump type:	centrifugal In-line
Voltage:	380V
Pump material:	cast iron
Wheel material:	cast iron
Wheel type:	centrifugal
Pump location:	vertical
Connection type:	flange
Diameter of nozzles:	50x50mm

calpeda NR EI 50/250A/B pump

Variable speed pumps
NR(D) EI, NR4 EI pumps available with power from 0.25 kW to 18.5 kW and equipped with I-MAT inverters.
They enable the implementation of an extremely compact and efficient variable speed system that is ideally
suitable for use in water supply and hot water distribution and cold water.
sensors programmed directly at the manufacturing plant and programmed by the user for the
necessary mode of operation.
Advantages
- Energy savings.
- More compact system.
- Ease of use.
- Personalized programming according to installation requirements.
- Reliability.
Design
System components:
- Pump
- Electric motor (two for NRD, NRD4)
- I-MAT frequency controller (two for NRD, NRD4)
- Adapter for mounting on the motor (two for NRD, NRD4)
- Connection cable for inverter and electric pump
- Pressure sensors
- Communication cable for NRD, NRD4 multi-pump unit
- 2 boards for NRD, NRD4 multi-pump unit
Main characteristics:
Nominal motor power: from 0.25 kW to 18.5 kW
Adjustment range: revolutions 1750÷2900 1/min (2-pole pumps).
Adjustment range: revolutions 870 ÷ 1450 1/min (4-pole pumps).
Protection against dry running
Protection against operation with a closed nozzle
Protection against leakage
Protection against overvoltage in the motor
Protection against overvoltage or undervoltage in the power system
Protection against imbalance between power phases