electrical-grounding

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electrical-grounding

  1. 1. Electrical Grounding BY: PIGENG YANG 14 April 2012
  2. 2. Electrical Grounding 1.Preparation 2.Materials 3 Tools 4.Installation 5.Test 6.Attachments 1
  3. 3. 1、Preparation  Site survey (to identify location of installation)  Application of electric power( for ground rod driver machine)  Shop drawing (attachment A)  Material approval (attachment B)  Incoming material inspection (attachment C)  Installation inspection (attachment D)  Test results (attachment E) 2
  4. 4. 2、Materials  Grounding rods  Grounding terminal boxes and test boxes  Bare copper earth wire, BCEW  PVC pipes 3
  5. 5. 3、Tools  Scaffolding or ladder  Ground rod driver  Resistance Meter  Cad welding mould  Powder mixture  Gas torch 4
  6. 6. 4、Installation Ground rod driver machine with ladder Ground rod driver machine with scaffolding 5 rod into earth
  7. 7. 4、Installation BCEW through ground beam BCEW with PVC pipe under ground beam 6
  8. 8. 4、Installation Powder mixture Cad welding mould Filling the mould with powder mixture 7
  9. 9. 4、Installation Three- way connection mould Mould with cover closed 8 Two-way connection mould
  10. 10. 4、Installation Gas torch to ignite powder Catch fire in three-way mould Catch fire in two-way mould 9
  11. 11. 4、Installation The joint after mould is taken off A close view of different joint type 10
  12. 12. 4、Installation Earth wires to connect with grounding and test boxesEarth & reference wires installation in electrical room 11
  13. 13. 4、Installation Earth wires reserved to connect with lightning rod Earth wires with PVC pipe attached on column 12
  14. 14. 5、Test Connect meter with grounding wire #1 Connect meter with grounding wire #2 13 Read the resistance value on the meter
  15. 15. THANK YOU 14
  16. 16. 6、Attachment(A) shop drawing 15
  17. 17. 6、Attachment (B) material approval Documents of Material Approved Sheet-BCEW 16
  18. 18. 6、Attachment (C) Incoming material inspection 17
  19. 19. 6、Attachment (D) Field installation inspection 18
  20. 20. 6、Attachment(E) Grounding resister test 19

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