- Service factor: 1.15
- Frequency: 50/60Hz
- Speed: 1500/1800RPM
- Voltage: 230/460/690V
- Protection degree: TEFC
- NEMA design, special balancing
- Equipped with anti-reverse ratchet
- Max. operating temperature: 55℃
- Altitude: 2000m
Key Features
Enclosed design prevents air exchange between the motor’s interior and exterior, with a rotor fan circulating internal air to transfer heat to enclosed components and an external fan blowing ambient air over the motor for effective cooling.
Material and lubrication system
- Oil-lubricated motors ship with empty bearing oil reservoirs; bearings retain a thin oil film, but reservoirs must be filled after three months of storage, with prominent labeling advised to avoid improper operation, oil leaks, or damage to internal parts.
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Two angular contact ball thrust bearings at the motor’s top manage upward or downward thrust, while a lower radial ball bearing handles pump-induced radial loads.
Corrosion-resistant materials
- Motor body features cast steel, oxygen-free copper windings, and a squirrel-cage rotor with integrated upper and lower cooling fans.
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Paired vertical turbine pumps use heat-resistant ductile iron, 2Cr13 stainless steel, or 304/316 stainless steel, ideal for impure or corrosive water.
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Geothermal deep-well pumps incorporate slender pump bodies with high-temperature, corrosion-resistant materials, withstanding high-pressure subsurface conditions.
Shanghai Electrical Machinery