| 摘要 |
PURPOSE: To provide a power system and the monitor for an electric facility in which a special measuring instrument like an infrared thermometer is eliminated and a measuring method is easy and which has excellent maintainability and reliability. CONSTITUTION: The power system comprises a temperature sensor 7 mounted at the connector of conductors of the system and an electric facility and a CT 6 mounted in the vicinity of a bus bar connector, a transmitter 4 for transmitting data, and a receiver. A resistor 21 is connected to the secondary side output of the CT 6. It is converted to an AC voltage, which is rectified and smoothed to a DC voltage by a rectifier 22, and a stabilized DC voltage is output by a power source 23 as the power source voltage of the data processor 31 of the transmitter 4. In this case, the voltage applied to the sensor 7 and the processor 31 is common at the secondary side of the CT 6 and the ground. |
