| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a gas leakage surveillance system of a gas-blast circuit breaker capable of early discovering leak of insulation gas sealed inside the breaker. <P>SOLUTION: The system is structured of a pressure sensor 2 detecting pressure of the insulation gas sealed inside the gas-blast circuit breaker, a temperature sensor 3 provided at a gas-blast circuit breaker main body 10, a pressure conversion means 4 converting the pressure measured by the pressure sensor 2 into a pressure of a reference temperature based on temperature measured by the temperature sensor 3, and a leakage detection means 5 detecting leak of the insulation gas from changes of the pressure after the conversion. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
