| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a current-monitoring unit capable of being unitized so as to be additionally installed to an electrical installation apparatus, digitally displaying a value of a current flowing through a load, and outputting the current value to an external control apparatus. <P>SOLUTION: The current-monitoring unit is provide with a monitoring circuit part 6 made of an upper substrate 4 and a lower substrate 5 vertically connected at an interval from each other to a connecting means 24 inside the case body 1 comprising an upper case 2 and a lower case 3; a current transformer 20, of which a part is exposed from a transformer through hole 40 bored in the case body 1; an alarm buzzer 22 for issuing an alarm when the load current exceeds a preset value; a display part 10 for digitally displaying a load current value; a switch 13 for switching the preset value; a power supply connection terminal 21, exposed from a connection terminal through hole 41 bored in the case main body 1; and a support frame 45 for supporting a push button 33 for push operations of the display part 10 and the switch 13 inside the upper case 2, and fixing the lower substrate 5 to the lower case 3. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
