KHIA headerKnow-How in Action


Belzona® Repairs High Voltage Breaker



Power (POWR)




Customer Location:

New England, USA


Application Date:

Summer 2010


Application Situation:

SF6 High Voltage Breaker.



The aluminum casting on a SF6 High Voltage Breaker cracked, causing coolant to leak out and create a dangerous operating situation. Dismounting and replacing the breaker was not an option as no spare breaker was available for months.



Belzona 1111 (Super Metal)



Cast Aluminum


Application Method:

The surface preparation was carried out with a hand tool grinder and the application was done in accordance with Belzona Know-How System Leaflet TCC-1.


Belzona Facts:

Outages are scheduled months in advance and require Grid operator approval. The station was in a scheduled outage when the leak was discovered. No replacement was immediately available so Belzona 1111 was used to get the plant back on-line on schedule, thus saving thousands of dollars.


Photographs Description

  1. Overview of the converter station
  2. The leaking area
  3. Completed surface preparation
  4. Completed application
Case study pic one


 Case study pic two


 Case study pic three


 Case study pic four


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