Well & waterworks design, in corrosion-resistant material design “C”
For use in cold, clean, chemically corrosive water with max. sand content of 100 mg/l and max. particle size of 2 mm.
Please absolutely have the material resistance checked by the manufacturer by means of a water analysis.
HYDRAULIC
Single- or multi-stage radial/semi-axial/axial submersible pump in waterworks-design for vertical/horizontal installation in stage design.
All casing parts in high-quality precision casting design with exchangeable wear rings of wear-resistant materials.
Shaft and connecting elements of high-alloyed stainless steel.
Adjustment of the duty point possible by trimming of impeller.
Shaft guided by rubber slide bearings.
Radial bearing completely lubricated by the pumped liquid and maintenance-free
Submersible pump:: Offshore K12.380
Impeller type:: Semi axial impeller
No. of stages: 1 – 6
max. impeller diameter: 224 mm
min. impeller diameter: 179 mm
max. temperature of pumped liquid: 20 °C
(higher temperature on request)
with/without non-return valve: with non-return valve
Diameter of unit: 12″ (Ø275 – Ø300)
(exact diameter on request)
No. of stages selected: 1
MOTOR:
“NEMA-standard” submersible motor in wet type technology.
In three-phase A.C. design with rewindable stator.
Motor stator, shaft ends and connecting elements of stainless steel.
Motor end parts in solid cast design.
Radial bearings by water-lubricated and -cooled slide bearings of special artificial carbon, with spiral and longitudinal slots included.
Mitchell-type bearing for high loads.
Supporting plate and tilting segments of stainless steel, mobile wear ring of artificial carbon. With integrated counter supporting disc of artificial carbon for negative axial loads.
Motor filling with pure drinking water or water/propylene glycol.
Optional with winding temperature control by cold type or PT100-thermistors.
MOTOR DATA
Selected motor: NU 801-2/75-o-60
Rated power: 60 kW
Power input of the motor with rated power: 68.6 kW
Current consumption of the motor with rated power: 121.1 A
No. of poles: 2
Rated speed: 2,905 1/min
Cos Phi with rated power: 0.86
Efficiency of motor with rated power: 87.5 %
Rated frequency: 50 Hz
Starting current with d-o-l starting: 760.0 A
Starting current with star-delta starting: 253.3 A
Starting torque: 340.0 Nm
Inertia moment: 0.0423 kg m²
max. starts per hour: 10
Break: 5 Minutes
Admissible axial thrust down: 50,000 N
Admissible axial thrust up: 2,000 N
Motor filling capacity: 8.6 l
Possible installation type: V
max. temperature of pumped liquid 40 °C
(higher temperature on request)
DUTY POINT DATA
Flow rate:
Tot.man.head:
Pump efficiency at duty point: %
Power input of motor at duty point (P1):
NPSH-value of pump at duty point:
Impeller diameter: 224.0 mm
MATERIALS
Suction piece: 1.4517
Stage- /guide casing: 1.4517
Impeller: 1.4517
Stationary wear ring: 1.4470
Pump shaft: 1.4462
clamp sleeve: 1.4462
Shaft sleeve: 1.4462
Bearing sleeve: EPDM
Connecting screws: A4
Nuts: A4
Non-return valve: 1.4517
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Weight of unit:274.9 kg
