Patent ID: 7005992

Claim:
A temperature monitoring system for an electric power-applied section, comprising: a temperature history recording means for measuring a temperature of said electric power-applied section and recording said temperature as a temperature history together with its measurement time; and a control means for controlling the recording and a transmitting operation of said temperature history at a first predetermined interval, wherein said temperature history recording means comprises: a temperature sensor that generates a temperature detection signal according to said temperature; a memory that stores, as said temperature history, a measured temperature and a measurement time based on said temperature detection signal; and a housing comprising a watertight circuit housing portion being formed to make a thermometric surface of said temperature sensor contact a measured object, wherein said memory comprises: a history memory that stores, in a time series, said temperature history; and a temperature alarm memory that stores, in a time series, as a temperature alarm, a temperature history being out of a range of a normal temperature, and wherein: said control means controls said temperature history recording means to conduct a recording operation of the temperature history at a second predetermined time interval that is shorter than said first predetermined time interval when a temperature history is stored in said temperature alarm memory.