Electrical contact wear

Details Electrical contact wear Electrical contact wear

1996-09-10

1999-08-24

Scott, J. R.

Electricity: circuit makers and breakers

Electric switch details

Contact

H01H 102

Patent

active

059413700

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 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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