HYBRID SURGE PROTECTIVE DEVICE JOINED TO NETWORK EQUIPMENT WITH POWER OVER ETHERNET

摘要

PURPOSE: An integrated hybrid surge protector for network equipment with Ethernet power protects the entire circuit more safely by absorbing a surge voltage at a high speed to a ground part by an overvoltage protection unit using a separate semiconductor device. CONSTITUTION: A line terminal (110) is connected to a cable led from a user device terminal. A first overvoltage protection unit (130) blocks a first surge voltage coming from the line terminal. An overcurrent protection unit (140) limits the overcurrent of the surge voltage. A second overvoltage protection unit (150) blocks a surge voltage coming faster than the first surge voltage. A device-side terminal (120) is connected to network equipment and receives power from the network equipment. [Reference numerals] (110) Line terminal; (120) PoE terminal; (130) First overvoltage protection unit; (140) Overcurrent protection unit; (150) Second overvoltage protection unit; (160) PoE detection unit; (AA) Device