1. Specification Writing and Review                                     4. Design Review
      2. Supplier Audit                                                                  5.  Factory Inspection
      3. Tender Review                                                                  6.  Factory Tests  


 

Specification Writing and Review

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•  Prepare technical specification.

•  Review/modify the existing client specification.

•  Prepare technical data sheet.

•  Review/modify the existing client technical data sheet.

•  Drawing review

 

Supplier Audit

 

  •    Design, drafting and control engineering experience/capability.

•  Manufacturing and testing capacity.

•  Quality Assurance/Quality Control

•  Transportation, Installation, and commissioning

Tender Review

•  Review technical details of the proposals and alternatives.

•  Vendors field problems, rectification, and warranty

•  Vendors shop failures, investigations and how correction were made.

•  Review the layout drawings submitted with the bids.

•  Service after warranty.

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Design review

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•  Core design

•  Core clamping and structure design

•  Winding’s design

•  Lead exits, arrangements, and connections

•  Insulation design

•  Short circuit capability

•  Cooling design (Radiator, fan, and pump)

•  Processing

•  Tap changer (LTC, DETC)

•  Tank

•  Bushings, monitoring devices, WTI, CT’s, pressure relief and safety devices

•  Fault arrest system

•  Flanges and gaskets

•  Series and compensation transformer

•  Shields (Magnetic and non-magnetic)

•  Current Limiting reactor

•  LTC reactor

•  Test plans

•  Shipping and installation

•  Drawings

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Factory Inspection

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•  Raw materials and accessories

•  Winding

•  Coil assembly and sizing

•  Core assembly

•  Pre-vapor phase including Ratio, Polarity and  core meggering tests.

•  Pre-tanking

 

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Factory Tests

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•  Routine tests

•  Type tests

•  Design tests (Short Circuit)