The switch choosing a button with the source of many electric powers automatically

摘要

A first power source, a second power source, and a third power source including a first power source and a second power source supplied from different substations or transformers, and a third power source generated from a self-generator; The first failure section switch and trip device (first trip device) wired to the first power source, the second failure section switch and trip device (second trip device) wired to the second power source, and the third wired to the third power source. Failure section switch and trip device (third trip device); Wired to the next stage of the switchgear via three fault interval switchgears and trip devices (fourth fault switchgear and a fourth trip device) via three fault section breakers wired to the respective three power sources; Each fault section switch includes a driving device for moving the contact of the switch and engaging the contact; A live wire monitoring device including a current transformer CT for monitoring whether the first, second, and third power supplies are out of power through an uninterruptible power supply device (UPS) that charges electric charges and supplies power during power failure; It is composed of a main control part composed of microprocessors that drive each trip device (1, 2, 3, 4 trip device) by receiving information on whether power is interrupted through the live monitoring market value, and thus, the first power supply and the first failure section switch It is wired to the next stage of the switchgear (KEPCO metering base, vacuum cut-off base, transformer panel, low voltage panel) through the fourth fault section switchgear, but when the first power is outage, the blackout monitoring device transmits the power failure information to the main fishery. The main control unit trips the first and fourth tripping devices to open the first and fourth fault section switchgear, safely opens the line in the double despite the power failure, and then supplies power through the second power source by driving the second fault section switchgear. Drives the fourth fault section switch to safely supply double power, and if the first, second, and power supply are out of power at the same time, the first, second and fourth trip devices are operated to open the line twice safely and then character Multi-power automatic selection switching device characterized in that the main control unit for driving the wig electric power and the third and fourth fault interval switch opening and closing the power supply safely.;Automatic switching, power failure, fault switchgear, main control part, microprocessor