| 摘要 |
A system and method for reducing the likelihood of a phase to phase or phase to neutral arcing failure, or a flashover in an electrical power consumption monitoring device. The method includes generating a reduced voltage from either a single phase or two phases of the electrical service provided, and utilizing the reduced voltage to supply the power supply circuits of the watthour meter and/or the data transmission circuits. A step-down auto-transformer may be used to generate the reduced voltage to thereby not only reduce the voltage available to the monitoring and data transmitting circuits of the watthour meter, but also limiting the current carried to those circuits. Because the total available power is reduced, the likelihood of a catastrophic failure caused by arcing within the watthour meter or a MOV failure is significantly reduced.
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