| 摘要 |
<p>PURPOSE:To provide a current pulse detector wherein operation confirmation can be easily performed at the time when it is set in a system. CONSTITUTION:A self test coil 2d composed of a conductor wound with a wind on a core 2a of a penetration type current transformer 2 is additionally provided, and a secondary side coil 2b and the test coil 2d are composed of a cable 2c, which is connected to the output of the penetration type current transformer 2, current is compared with a threshold level, and a pulse detector 3 for detecting presence of a current pulse on a line is equipped. In addition, the input terminal of the self test coil 2d is incorporated in the pulse detector 3, so that operation confirmation can be easily performed without any need for particularly setting a test signal application line at the time of the operation confirmation.</p> |
