Typical ArresterWorks Projects

Forensic Analysis of Failed Arresters

This is the most comprehensive analysis of failed arresters anywhere. 18-30 pages of analysis and cause of failure conclusions.

1. In depth examination of the available parts.

2. Close-up photography and microscopic photography to identify cause of failure.

3. Gas analysis of unfailed partner arresters if available.


4. Analysis of electrical characteristics of available disks. Any disk can be analyzed no matter how damaged.

5. Leak checking using the appropriate method (HMS, vacuum, die penetrate, pressure decay) of failed and unfailed partner arresters


6. In depth review of potential causes of failure and rationale of which ones are possible and which ones are not. The list includes.
   
   

   Moisture Ingress	Improper MCOV or TOV Rating
   Excessive Partial Discharge	Unbalanced Electric Field
   Lightning	Misalignment of Disk Column:
   Temporary Overvoltage	Improper Spring Pressure
   Switching Surge Overload	Mechanical Stress
   Aging of Disks	Burrs
   External Contamination	Insufficient Dielectric Strength



7. And much more...


8. Arresters that can be Analyzed: Porcelain 3-500kV, Polymer 3-500kV, Underoil, Elbow, Secondary.

Contact Jonathan Woodworth at 716 307 2431 or at jonathan.woodworth@arresterworks.com for more information or to make arrangements for a quote.