| 摘要 |
PURPOSE: A switchboard with a standby power cut-off function is provided to reducing standby power consumption by implementing a protective relay system. CONSTITUTION: A protective relay operates a circuit breaker to switch power according to a detected accident or anomaly on a power line. A sensing unit (200) senses at least one among a current, voltage, and temperature signal of the power line. A power control unit (300) comprises a control signal generator and a power control driver. A selective switch (400) is installed to be parallel to the power control unit to differentially switch power that is supplied to the protective relay. [Reference numerals] (100) Protective relay; (200) Sensing unit; (300) Power control unit; (500) Mode display unit |
