| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a portable instrument which can confirm on the spot as to whether the function of a clamp type current sensor is effective. SOLUTION: This portable instrument is constituted, including a clamp type current-detecting means for detecting a current signal, while holding a part of an object to be measured where a current flows, a current-measuring means for measuring the current from the current signal of the clamp type current- detecting means, a reference current-generating means for checking the clamp type current-detecting means, a test means for flowing the current generated by the reference current-generating means and holding the clamp-type current- detecting means, and a notification means for confirming check results of the clamp-type current-detecting means.</p> |
