Other specific motors :
279 products
AC AND DC MOTOR
Specialist
AC and DC motors
for surface and
submersible applications
See also
Astrosyn’s design, manufacturing and support capability has been developed for an extended range of AC and DC
special-duty electric motors to meet the most stringent Naval Engineering Standards. The resultant performance parameters frequently apply directly to complex commercial projects...
Ultra low vibration
Shock protection
Submersible operation
Weather resistance
EMC compliance
Temperature extremes
Magnetic field compensation
Flame proofing
Electrical noise reduction
Special-duty AC Motors
Specialist ac motors are used to power a range of critical marine and submarine services including pumps, compressors, fans, bow thrusters, sonar and radar systems. Power ratings span a range up to 750kW. Submersible applications include sewage and waste water pumping, dredging, deep well sinking and offshore drilling platforms.
Special-duty shock resistant AC motors
type 43
AC motors to meet naval requirements for equipment emitting low noise & vibration spectra
Capable of withstanding mild shock to 30g in all directions
Available in IEC frame sizes from 56 to 400L
Standard range constructed with winding insulation class F
Minimum housing protection IP44.
High shock tolerant AC motors
type 50
High shock level tolerance
Compliant with the NSSII naval standard
All type 50 AC motor housings are made from nodular cast iron
type 60
Incorporates low-mass high shock resistant design
Particularly applicable to pumping applications which benefit from close coupling of the motor to the equipment being driven.
Extreme shock tolerant AC motors
t ype 48
Features a steel welded housing
Performance levels combine ultra low noise and vibration with extreme shock tolerance.
This range is also available flame proofed to Eexde (Zone 1), suitable for operation in hazardous environments
Submersible AC Motors
Astrosyn's submersible AC motors are designed for continuous or intermittent immersion, with capability for surface or forced cooling and various seal options. Typical applications include...
Deep well sinking
Dredging
Sewage & Waste water pumping
Offshore drilling platforms
Surface-Cooled Submersible Motor
type 55
Designed for continuous submersible operation, or operation only when submerged
Available in power ratings up to 500kW and IEC frame sizes up to 450
Standard range designed with mechanical seals, lipseals or airbell construction
Winding insulation classes F or H available and protection rating is up to IP68
Forced-Liquid Cooled Submersible Motor
type 99
Cooling by forced liquid flow permits operation at maximum power in both submerged and dry conditions
Excellent cooling enables a high output to be achieved from a small frame size.
Features very low airborne noise emission
Available in power ratings up to 500kW and IEC frame sizes up to 450
Winding insulation classes F or H available and protection rating is up to IP68
Low Magnetic AC Motors
Astrosyn offers a range of AC motors developed to minimise strayfield magnetic and acoustic signatures. Widely used on board mine counter-measure vessels such as minehunters and minesweepers, these motors are available in protection classes from IP54 to IP68, with standard shock protection up to 60g. Two options are available for reduced strayfield emission...
Low Magnetic
type 53
With low magnetic materials and designed to minimise strayfield and acoustic signatures
The standard range offers shock protection up to 60g
Protection ratings from IP54 to IP68, and winding insulation F or H
Integrated Strayfield
type 54
Features strayfield compensation coils which automatically track the motor load to achieve a significantly reduced strayfield signature without the use of ferromagnetic materials or complex electronics
Integrated strayfield compensated and degaussing design does not require any additional space or larger frame sizes
See also dc motors
Motor Refurbishment & Repair
Astrosyn offer a comprehensive repair service for AC and DC motors of our own manufacture and for those originally supplied by other specialist companies.
Stripdown & Survey
Initial inspections (visual, mechanical and electrical)
External cleaning
No-load testing
Disassembly
Internal cleaning
Inspection of subassemblies and/or parts
Measurement of shaft and housing fits
Report findings
Basic Refurbishment
Reclaiming of bearing fits (shaft and flanges)
Replacement of bearings
Assembly
No-load testing
Airborne noise measurements to NES847
Structure borne noise measurements to NES813
Touch up paint system; finishing
Test report and Certificate of Conformity
Major Repairs
Flange machining and shaft repair
Removal of old windings, rewind and varnishing
Fitting new thermistors to NES requirements
Replacement of armatures
Skimming of rotors and stators to adjust air-gap
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Astrosyn International Technology Plc
