“Offshore”-design in corrosion-resistant material design “C” or “D”
For use in sea- and brackish water (off-shore), as well as chemically aggressive water.
Max. water temperature up to 40°C/104°F, max. sand content of 35 mg/l and max. particle size of 2 mm.
Please absolutely have the material resistance checked by the manufacturer by means of 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 cast design.
Shaft and connecting elements of high-alloyed stainless steel.
Impellers in solid full metal design, with exchangeable wear rings of wear-resistant materials.
Adjustment of the duty point possible by trimming of impeller.
Shaft guided by metal or rubber slide bearings.
Radial bearing completely lubricated by the pumped liquid and maintenance-free
Submersible pump: Offshore K 146.1
Impeller type: Semi axial impeller
No. of stages: 3 – 7
max. impeller diameter: 209 mm
min. impeller diameter: 183 mm
max. temperature of pumped liquid: 20 °C
(higher temperature on request)
with/without non-return valve: without non-return valve
Diameter of unit: 18″ (Ø362 – Ø405)
(exact diameter on request)
No. of stages selected: 4
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 122T-2/120-o-235
Rated power: 235 kW
Power input of the motor with rated power: 266.4 kW
Current consumption of the motor with rated power: 187.6 A
No. of poles: 2
Rated speedl: 2,928 1/min
Cos Phi with rated power: 0.82
Efficiency of motor with rated power: 88.2 %
Rated frequency: 50 Hz
Starting current with d-o-l starting: 1,460.0 A
Starting current with star-delta starting: 486.7 A
Starting torque: 1,050.0 Nm
Inertia moment: 0.3557 kg m²
max. starts per hour: 10
Break: 5 Minutes
Admissible axial thrust down: 70,000 N
Admissible axial thrust up: 10,000 N
Motor filling capacity: 30 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: 209.0 mm
MATERIALS
Suction piece: G-Cu Sn10
Stage- /guide casing: G-Cu Sn10
Discharge PN 25-40: G-Cu Sn10
Impeller: G-CuAl10Ni
Stationary wear ring: 1.4580
Pump shaft: 1.4462
Shaft sleeve: 1.4401 / 1.4404
Pump end bearing: 1.4571 + NBR
Screws / tightening bolt: A 4 – 70 / A 4
Nuts: A 4 – 70
Weight of unit: : 929.0 kg
