High-voltage switches with arc preventing or extinguishing devic – Arc preventing or extinguishing devices – Interposed non-conductor
Patent
1999-04-21
2000-02-08
Scott, J. R.
High-voltage switches with arc preventing or extinguishing devic
Arc preventing or extinguishing devices
Interposed non-conductor
200262, 218 1, 218107, 218146, 324424, H01H 100, H01H 3302, H01H 3375
Patent
active
060230363
ABSTRACT:
The design of electrical switches that operate under load (with current flowing) requires replacement of the electrical contact after erosion and wear experienced by arcing and raised temperatures reduce functionality below acceptable limits.
A quantity of trace element or compound is implanted at a depth representative of the point at which wear or erosion requires contact replacement. When exposed by wear or erosion, the quantity of the trace element is released into the oil or other medium surrounding the contact, providing an indication of excessive wear.
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