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Recent content by saymeng

  1. saymeng

    HDZ Fasteners Corrosion

    Hi, The fasteners are all hot dipped galvanized steel and the copper bar is tin coated. Thanks
  2. saymeng

    HDZ Fasteners Corrosion

    Hi All, It is unlikely to have moisture ingress, it is a energised distribution transformer that has been in operation for about 3 years. It is location in-doors. I am sorry but that's the best picture I can get, as the client is reluctant for us to open up the LV cable box. Yes, I agree that...
  3. saymeng

    HDZ Fasteners Corrosion

    Hi, here is a close up. It looks to me like the zinc is migrating...on the bolts. http://files.engineering.com/getfile.aspx?folder=eb4bdc7c-f284-467b-8f5f-a46d29a9e8e0&file=TFM2.png
  4. saymeng

    HDZ Fasteners Corrosion

    Hi, I need some advice/suggestions on the root cause of this. The HDZ bolts are used on the LV side of a transformer and it shows signs of corrosion. The location is in doors, dry, no signs of moisture ingress. The transformer has been in operation for 3 years+...
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