neonison
Member
Seen on 387 162 - what are the rings on the edges of the pan head?
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What are the rings on this class 387 pantograph?
- Thread starter neonison
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RailUK Forums
Could they be anti-corona rings? I don't know anything about pantograph design but with the large voltages that are involved these come to mind.
Peter Mugridge
Veteran Member
They are indeed. The whole point is to reduce the risk of arcing from a relatively sharp / pointed end to the pantograph.
D365
Veteran Member
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I was thinking that the 'horns' name sounded more familiar.
neonison
Member
Many thanks
Of course I’m now puzzled as to why these are not found on all other pan heads, including those of more recently-introduced classes.
Of course I’m now puzzled as to why these are not found on all other pan heads, including those of more recently-introduced classes.
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