Patent WO-2016114613-A1 (WO)
Title: Power supply state automatic recording system, and recording method using same
Inventor: NA BYEONG-CHEOL
IPC: G01R13/00
Filed: 2016-01-14
Abstract: The present invention relates to a power supply state automatic recording system, and a recording method using the same. More specifically, the purpose of the present invention is to provide a power supply state automatic recording system and a recording method using the same, the system having a power supply black-box function of being able to check, in real time through a power supply state automatic recording device, the number of blackouts, the number of short circuits, the number of surges, the leakage current, and the used current, thereby providing use state information to thus analyze said matters and analyze, in real time using a network, the cause of a short circuit or current leakage and a blackout, and whether or not power supply is stably supplied, so that power supply can be stably supplied. The present invention relates to a power supply state automatic recording system consisting of: a short circuit breaker connected to a power supply input terminal; a power supply state automatic recording device; and load equipment connected to a power supply output terminal, wherein the power supply state automatic recording device comprises: a short circuit detection circuit which detects, through a zero current transformer (ZCT), a short circuit occurring in a power supply line; a leakage current measurement and surge current measurement circuit which measures, through the zero current transformer, the amount of current leaking from the power supply line, and comprises a surge current measurement circuit for detecting lightning or a momentary overcurrent and overvoltage; a used current measurement and surge voltage measurement circuit which measures, through a current transformer (CT), the amount of current used in the power supply line, and comprises a surge voltage measurement circuit for detecting lightning or a momentary overcurrent and overvoltage; a transformer and DC power supply circuit which steps down the voltage at a predetermined rate and outputs the same as DC power; an auxiliary power supply which, if a short circuit breaker operates due to a short circuit or a surge and thus power supply is cut off, delivers auxiliary power through an auxiliary power supply terminal; a microprocessor which receives mode information through a mode selection switch, stores, in a non-volatile memory, and then displays, in a number display device, the number of blackouts, the number of short circuits, and the number of surges added up by detecting the number of blackouts, short circuits and surges of power supply supplied to the power supply line, stores, in the non-volatile memory, and displays, in the number display device, the leakage current and the used current so that the leakage current and the used current can be respectively checked, in real time, through the zero current transformer and the current transformer; and a central center which manages, in a remote location, the number of blackouts, the number of short circuits, the number of surges, the leakage current and the used current.