High Voltage Motors
At A.C. Hargreaves and Co.we have extended our workshop and equipment services, and acquired Quality Assurance AS/NZS ISO9001:2000 to meet the demand of large motor overhauls and rewinds. A fully equipped large workshop for all AC/DC Low Voltage-High Voltage rotating machinery with fully qualified and experienced personnel to service this industry has been developed in the past 18 months. High Voltage rewinds and overhauls are carried out in our modern workshop with overhead crane lifting capacity of 16 tonne. An additional 20 tonne crane is planned for the near future. Some of our modern acquisitions include:
- Large Burn Out Oven Large Baking / Curing OvenVacuum Pressure Impregnation SystemAutomated Random Coil Winding MachineLarge Lathe CapacityDLA Tan/Delta HV Testing
- Partial Discharge Testing
 Large Baking Oven - Dimensions 3.3m Deep, 4.0m Wide, 2.9m High |
 Armature being processed through our VPI System |
 Large Gas Fired Burn Out Oven - Dimensions 2000mm Wide, 3560mm Deep, 2130mm High /font> |
 DLA Test on 2Mw 6.6KV Stator 593rpm 325frame |
 Large capacity automated Winding Machine |
High Voltage Workshop Capabilities
- Medium to large AC motor and/or generator stator rewind up to and including 11,000 voltsMedium to large AC motor and/or generator rotor rewindMedium to large Synchronous motor and/or generator stator / rotor rewind up to and including 11,000 voltsMedium to large DC motor and/or generator field coil rewindMedium to large DC motor and/or generator armature rewindWinding design verificationWinding designsStator and/or rotor lamination core tests ?This test is carried out on all rewinds to ensure the integrity of the inter laminar insulationCore rebuildsCommutator and Slip Ring RebuildsAC and DC motor overhaulsDesign modification and/or changeHV MeggerPolarization Index (PI) TestingSurge TestingTan Delta Testing>
- Partial Discharge
High Voltage Onsite Capabilities
- Large AC motor and/or generator stator rewind up to and including 11,000 voltsLarge AC motor and/or generator rotor rewindLarge Synchronous motor and/or generator stator rewind up to and including 11,000 voltsLarge Synchronous motor and/or generator rotor rewind up to and including 11,000 voltsLarge AC and DC motor overhaulFault DiagnosisChange outsHV MeggerPolarization Index (PI) TestingSurge TestingTan Delta Testing.
- Partial Discharge
 2 Mw, 6.6KV, 10 Pole Stator Overhaul |
 1.2KV, 6 Pole Rotor Rewind |
 2 MW, Squirrel Cage Rotor |
 Large machining lathe-6 ton capacity |
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