Electric wire protection device

• Main Authors: MIYAKAWA TAKAHIRO, UETA KEISUKE, KIKUCHI TAKASHI, KAWAMATA SEIJU, TSUKIOKA MASATAKA, NISHINO TOMOYA, EZOE RIKUYA, UJIGAWA NOBORU, NAGAKURA SYUNSUKE
• Format: Patent
• Language: Chinese; English
• Published: 25.09.2018
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS; GENERATION

An electric wire protection device includes a voltage adjuster that adjusts voltage on a power source side to be supplied to a load and a controller that includes a temperature calculation part whichcalculates temperature information of an electric wire based on a current value flowing through the voltage adjuster. The controller sets a first time constant Tau s (S20) as a time constant used to calculate the temperature information while the voltage adjuster is in the interrupted state (S10, so), and sets a second time constant Tau n (S30) as a time constant used to calculate the temperatureinformation while the voltage adjuster supplies power to the load (S10, not). The first time constant is a value larger than the second time constant and equal to or larger than an actual time constant of the electric wire, and the second time constant is a value smaller than the actual time constant of the electric wire. 提供种能够适当保护电线的电线保护装置。电线保护装置包括：对电源侧的电压进行调压并供给至负载的电压调节部；具有根据流过电压调节部的电流值计算电线的温度信息的温度计算部并基于温度信息使电压调节部为断开状态的控