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ELECTRICAL POWER DISTRIBUTION TRANSFORMERS
ELECTRICAL POWER DISTRIBUTION TRANSFORMERS
  • Description: The scope covers 1,000kVA and 1,500kVA dry-type cast-resin transformers, complete with all necessary accessories. Larger transformers may be used with the approval of ADSSC. It is mandatory for manufacturers to have valid ISO 9000 series Certification issued by an Internationally Recognised Agency of West Europe, USA or Japan and should have been tested in a "RecognisedIndependent Testing Laboratory" as per the relevant IEC standards, including "Short Circuit Withstand Tests". The Manufacturer shall have documented supply record of similar transformers working satisfactorily in the same climatic and service conditions for the last five (5) years as a minimum prerequisite to submit their offer. The transformers shall be installed in a non-air-conditioned room without any forced ventilation duty at the specified ambient conditions. The Contractor shall submit technical specifications of the transformer and associated switchgear and cables together with shop drawings to ADWEA for approval prior to the manufacturing of the equipments. A duly stamped and approved copy by ADWEA shall be submitted to the engineer at site for record prior to the commencement of any work. The Contractor shall ensure supervision and certification of the testing of transformers and associated HV/MV switchgear and cables at site by ADWEA's engineers.
  • Standards: Local
  • Location: Abu Zabi
  • Categories: Fire Protection, Architecture, Structure, Mechanical, Electrical, Plumbing, Generic
  • Sub Categories: Architecture
  • Posted: February 3rd, 2022, 7:25 am
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INDEX

  1. DISTRIBUTION TRANSFORMERS – DRY TYPE (CAST RESIN)
  2. GENERAL
  3. DESIGN AND CONSTRUCTION
  4. RATING
  5. VOLTAGE RATIO
  6. TEMPERATURE RISE
  7. CONNECTIONS
  8. OFF CIRCUIT TAPPINGS
  9. IMPEDANCE VOLTAGE
  10. NOISE LEVEL
  11. HV AND LV WINDING
  12. SUPPRESSION OF HARMONIC VOLTAGES
  13. MAGNETIC CIRCUIT
  14. CORE ASSEMBLY
  15. CABLE TERMINATIONS
  16. INTERNAL EARTHING ARRANGEMENT
  17. EARTHING TERMINAL
  18. TRANSFORMER HOUSING
  19. EMERGENCY LOADING
  20. CAPITALISATION OF LOSSES
  21. INSPECTION AND TESTING
  22. ACCESSORIES
  23. WINDING TEMPERATURE MONITORING SYSTEM
  24. DIMENSIONS
  25. CORROSION PROTECTION
  26. NAME PLATES
  27. DISTRIBUTION TRANSFORMERS – OIL IMMERSED AIR COOLED
  28. GENERAL
  29. SYSTEM CHARACTERISTICS
  30. DESIGN AND CONSTRUCTION
  31. TYPE
  32. RATING
  33. VOLTAGE RATIO
  34. TEMPERATURE RISE
  35. CONNECTIONS
  36. OFF CIRCUIT TAPPINGS
  37. IMPEDANCE VOLTAGE
  38. DUTY UNDER FAULTS
  39. TANK
  40. FINISH AND COATINGS
  41. COOLING
  42. FLUX DENSITY
  43. WINDINGS
  44. BUSHING TERMINALS AND CABLE BOXES FOR GROUNDMOUNTED TRANSFORMERS
  45. FITTINGS
  46. ADDITIONAL SPECIFICATION FOR POLE-MOUNTING TRANSFORMER
  47. MOUNTING ARRANGEMENT
  48. HV TERMINALS
  49. LV CABLE BOX
  50. DIMENSIONS
  51. EMERGENCY LOADING
  52. INSPECTION AND TESTING
  53. TRANSFORMER LOAD AND NO-LOAD LOSSES
  54. CAPITALISATION OF LOSSES
  55. OPERATION AND MAINTENANCE MANUAL



Posted By

SAFWAN VP Mechanical engineer

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