Claims
- 1. A method for detecting and indicating possible faults in a watthour meter having a current stator which includes a current core and a current coil, said method comprising:
- directly applying a low melting point metallic coating to the current coil of the current stator of said watthour meter; and
- providing a non-conductive covering for said metallic coating that has a reduced thickness portion whereby said metallic coating penetrates said non-conductive coating at said reduced thickness portion when a current surge is received by said current coil sufficient to melt said low melting point metallic coating so that a visual indication of a possible fault is thereafter presented at said covering, said non-conductive coating being a sheath surrounding that portion of said current coil having said metallic coating applied thereto.
- 2. The method of claim 1 wherein said method includes placing an indicia on said sheath that is responsive to melting of said low melting point metallic coating to thereafter visually indicate that a possible fault has occurred.
- 3. The method of claim 2 wherein said indicia is in the form of the letter "H" when applied to said sheath.
RELATED APPLICATION
This application is a division of my copending U.S. application Ser. No. 585,110, filed June 9, 1975, and entitled "Heat Sensitive Fault Detecting and Indicating System for Watthour Meter" now U.S. Pat. No. 4,017,795.
US Referenced Citations (4)
Divisions (1)
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Number |
Date |
Country |
Parent |
585110 |
Jun 1975 |
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