12" SAER Submersible Borehole Motors
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Applications
Motor for radial or semi-axial submersible pumps, in wells with
12” diameter or bigger, basins or boosters for pressurization
systems.
Constructive Characteristics- Standard Motors
- Water filled rewindable submersible motor, with PVC or PE winding Filling fluid: clean water with mono-propylenic glycol. Pre-filled motors, fill-up tools included.
- Shaft protrusion: spline model or cylindrical model with key Degree of protection: IP 68
- Shaft entirely made of stainless steel AISI 431
- Outer shell made of stainless steel AISI304
- Bidirectional Kingsbury type axial thrust bearing
- Counterthrust bearing
- Water lubricated radial bearings
- Safety valve
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A compensation membrane on the bottom of the motor ensures
the balance between the internal and external pressures, along
with the variation of the water volume due to the temperature.
Standard, double seal system on rotor shaft: bi-directional
mechanical seal in SiC/Tungsten Carbide + sand-guard with
laminar seal
Rotation: clockwise or counter clockwise without distinction Cable material suitable for use with drinking water
All motors 100% tested (test report supplied upon request)
SAER submersible motors are suitable for use with frequency changer. You can address to our technical servicing for any further
information.
Features
- Powers: from 150 kW up to 300 kW
- Frequency: 50 Hz (3000 1/min) and 60 Hz (3600 1/min)
- Standard voltages: 400 V - 50 Hz / 460 V - 60 Hz, other voltages up to 700 V upon request.
- Tolerance in conformity to IEC EN 60034-1
Installation and Operation Characteristics
- All MS300 series motors do not need auxiliary cooling systems in normal working conditions.
- Max water temperature: PVC: 25°C, PE: 50°C. See page 64 for de-rating charts.
- Max starts / h:
- P (kW) Starts / h
- 75 ÷ 132 20
- 150 ÷ 185 15
- Allowable voltage variation: +10% / -10% Un
- Max immersion depth: 200 m
- Mounting: vertical / horizontal (up to 170 kW)
- Max allowable axial thrust: 70 kN
- Motor protection against overloads: protection have to be provided by the customer and it has to be according to EN 60947-4-1. Trip time < 10 s at 5 x In.
Special Versions
- PE winding for hot water (up to 50 °C)
- Version for horizontal mounting (up to 170 kW)
- Version with double axial thrust bearing for heavy duty horizontal work
- AISI 316 stainless steel series MSX
- Marine bronze series MSB
- Mechanical seals in special materials
- Lead in different lengths
Accessories on Request
- PT100 temperature sensor
- PTC thermistor according to DIN 44082
- Complete control box
- External compensation tank suitable for encrusting or corrosive water
- Complete splicing kit