High Voltage 3 Phase Induction Motor Winding

PUTAI manufactures high-voltage stator windings for motor OEMs, distributors, repair workshops and industrial maintenance teams. They support new motor production, motor overhaul and replacement projects involving compatible high-voltage three-phase induction motors.

Stator winding design follows the applicable motor specifications. Conductor dimensions, number of turns, coil pitch, slot fit and end-turn geometry are matched to the approved winding design. The main insulation uses F/H-class epoxy mica tape, with anti-corona and supplementary insulating materials as specified. Coils are formed to the required geometry, with Vacuum Pressure Impregnation (VPI) and curing applied according to the specified process.

Mining and Mineral Processing: Replacement windings for compatible motors driving mine ventilation fans, large dewatering pumps and mineral-processing water systems.

Steel and Metallurgy: Windings for motors driving cooling-water pumps, process-water pumps, large ventilation fans and compatible rolling mill auxiliaries.

Cement Manufacturing: Applications include motors driving kiln exhaust fans, preheater fans, cement mill ventilation systems and compatible raw-material processing equipment.

Power Generation: Replacement windings for compatible motors driving circulating-water pumps, cooling-water pumps and auxiliary fans.

Oil, Gas and Petrochemical Processing: Windings for compatible high-voltage motors used in industrial process pumps and compressor auxiliaries. Suitability depends on the motor design and operating conditions.

Water Treatment and Industrial Utilities: Applications include raw-water intake pumps, treated-water transfer pumps and industrial cooling-water systems.

PUTAI supplies stator windings for motor manufacturers, repair workshops, maintenance contractors, distributors and spare-parts suppliers. Matching is based on the actual winding design, not the motor model name alone.

OEM Winding Supply
OEM production can use approved coil drawings, winding diagrams, technical specifications and agreed inspection requirements. Key information includes rated voltage, winding connection, conductor dimensions, number of turns, coil pitch, slot configuration, end-turn geometry, insulation requirements and lead arrangement. Approved documentation supports consistency across repeat orders, while design changes should be reviewed before production.

Replacement Windings for Existing Motors
Replacement assessments can use motor nameplate data, original drawings, coil samples, stator measurements, photographs and maintenance records. Compatibility is assessed across four areas:
• Electrical: Rated voltage, winding turns and connection arrangement.
• Dimensional: Slot geometry, coil dimensions and end-turn shape.
• Insulation: Main insulation structure and applicable stress-control requirements.
• Installation: Coil insertion, phase separation, lead positions and connections.

If original drawings are unavailable, customers can provide nameplate photographs, existing coil photographs, samples and available dimensions. PUTAI can review the information to identify missing details and determine what additional measurements or documents are needed before specifications are finalized.

The listed motor series are Y2, YKK, YRKK and YXKK. The product information also identifies motors associated with Wolong, Shanghai Electric, Xi'an SIMO and Jiamusi. Compatibility must be assessed for the specific motor and winding design.

Production process

 

PUTAI Electric Motor Equipment Co., Ltd. reports the following company-wide resources:

These figures describe overall company resources and experience, rather than winding-specific production capacity.

High-voltage stator winding production follows the approved design and project specifications.

Technical Review: Review available drawings, winding data, dimensions and insulation requirements.

Conductor Preparation and Winding: Prepare copper conductors and wind coils according to the approved specifications.

Coil Forming and Insulation: Form coils to the required geometry and apply the specified insulation materials.

Impregnation and Curing: Perform VPI and curing where required by the manufacturing process.

Final Inspection and Identification: Check the finished winding against agreed requirements and identify the product.

Inspection requirements are defined by the winding design, applicable technical requirements and agreed order specifications. Depending on the project, checks may include:

Dimensional Inspection: Coil dimensions and forming geometry.

Conductor and Connection Checks: Specified conductor details, winding continuity and connection information, as applicable.

Insulation Testing: Insulation resistance and specified electrical tests, including inter-turn withstand voltage testing where applicable.

Process Checks: Relevant insulation, impregnation and curing stages, as required.

Inspection Records: Results and product identification according to the agreed inspection plan.

Test methods, acceptance criteria and report requirements should be agreed before production. Records should reflect only inspections and tests actually performed.

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