SD
Submersible borehole pumps for 4” and 6” wells
FLOW
0.15 / 21
mc / h
HEAD
6.6 / 305
m
POWER
0.37 / 10
kW
Execution
Submersible borehole pumps for 4” wells (DN 100 mm), and 6” (DN 150 mm), with external jacket in stainless steel AISI 304 and impellers in Noryl.
Impellers
radial floating impellers 4SDP
radial impellers 6SDN 12, 16, 21
mixed flow impellers 6SD 18, 19, 20
Connection: screwed connection ISO 228.
Delivery casing with built-in non-return valve.
Applications
For water supply systems.
For civil and industrial applications.
For fire fighting applications.
For irrigation.
Operating conditions
Liquid temperature: up to a 35 °C for 4” motors
– up to a 25 °C for 6” motors.
Max. sand quantity into the water: 150 g/m3 (300 g/m3 high percentage of solids and sand).
Continuous duty.
Motor
2-pole induction motor, 50 Hz (n ≈ 2900 rpm).
Sized for connection to the pumps according to NEMA Standards.
Standard voltages:
single-phase – single-phase 230 V up to 2,2 kW for 4” motors.
three-phase – three-phase 230 V; 400 V, for 4” motors.
– three-phase 400 V; 400/690 V, for 6” motors.
Voltage tolerance : +6% / -10%.
In order to limit both current and torque at each starting, for rated motor powers equal to or higher than 7.5 kW, one of the following types of starting is necessary: star/delta, soft starter, stator impedance or autotransformer.
Insulation class F for 4” motors, class E for 6” motors.
Protection IP 68.
Continuous duty.
4” motor suitable operation with frequency converter (4” singlephase excluded).
6” motor suitable operation with frequency converter (with suitable filter dv/dt).
Case History
Case History
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