| 摘要 |
PURPOSE: A digital low voltage maximum current measuring device is provided, which is easily installed since it does not adjust the switch in response to current prediction value of the low voltage distribution line during the installation. CONSTITUTION: A digital low voltage maximum current measuring device includes a current transformer(31), a static voltage block(32), a current rectifying block(33), a microcomputer(35) and a displaying block(36). The current transformer(31) detects the current flowing the wire. The static voltage block(32) supplies the voltage to the system. The current rectifying block(33) rectifies the current applied from the current transformer(33). The microcomputer(35) measure and stores the over current flowing the wire through the rectified direct current in response to the previously set program. And, the displaying block(36) displays the elapsed time, a current value, a maximum current generation elapsed time and a maximum current for the maximum value of the current flowing the wire under the control of the microcomputer(35).
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