| 摘要 |
<p>PURPOSE:To contrive simplifying of the titled structure by a method wherein a secondary side of a electrical leak circuit breaker is connected with a power supply part for corrosion prevention and a time switch provided with a heater part on its secondary side, in the titled device which is incorporated with a time switch which enables to make contact only during midnight electrical power supply service time zone. CONSTITUTION:A electric water heater 1 is composed of a heater part 2, a power supply part 9 for corrosion prevention of a tank 3 and electrode part 10 for corrosion prevention, also provided with a time switch 7 being enabled to make contact only during midnight electric power supply service time zone. In this case, a secondary side of a electrical leak circuit breaker 6 is connected with a power supply part 9 for corrosion prevention and a time switch 7, also the heater part 2 is connected to the secondary side of said time switch 7. Thereby, the electrical power is supplied to the electrical water heter 1 through an energy meter 8 for the midnight electric power supply service, while one side, supplied to the power supply part 9 for corrosion prevention, and the other side, supplied to the heater part 2 through the time switch 7 respectively. Therefore, the electric leak circuit breaker 6 is enabled to control the circuits of two lines by only the operation of said circuit breaker itself, accordingly, the simplifying of the power supply equipment can be achieved.</p> |
