| 摘要 |
The present invention is the high pressure distribution panel having the blocking function through an arc flash sensor, a low voltage distributing tool, and a motor control center and a cabinet panel. The high pressure distribution panel, the low voltage distributing tool, and the motor control center and the cabinet panel can detect the generation of the arc flash from the flowing phase currents in any one of holding spaces based on photo sensing signals of the current sensing module, from the sensing and point light sensing unit furnace through an offset sensing unit comprised of two or more point light sensing units, and from AC voltage lines located in the holding spaces. The arc offset and the arc flash which can be generated by the holding space senses cam be sensed at any breaker, a trip coil drive unit and the holding spaces for operating the trip coil of the breaker of three phase voltage that runs in electrical devices for selectively blocking within two or more holding spaces and supplies the sensed illumination to offset the energy level in the arc. The level of the arc energy is calculated from the number of occurrence in a certain period, and also by examining the intensity of the detected arc flash, as well as the duration and the corresponding holding space. The load level is determined based on phase currents sensed by the current sensing module. The necessity of the trip is determined based on the energy level and the load level in the arc. According to the necessity of the trip, the control module includes the operation of the trip coil of the breaker to the trip coil drive unit. [Reference numerals] (12) Main MPU;(14) Sub MPU;(20) Manipulation unit;(22) Remote control receiving unit;(24) Trip level setting unit;(30) Light sensing module;(32) Current sensing module;(34) Access sensing module;(36) Door sensing module;(40) Trip coil drive unit;(42) First light alarming unit;(44) Second light alarming unit;(50) LED display unit;(52) Sound output unit;(54) Screen display unit;(AA) External terminal |
