| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a fitting method for a current transformer which requires no laborious fitting and screwing of a crimp-style terminal. SOLUTION: A current transformer 1 is fitted to the surface of a substrate 3 comprising a judgement circuit 15 which judges whether to actuate a protective relay based on a secondary current of the current transformer 1. A conductor part 7 of a coated conductor 2 which, with a primary current of the current transformer 1 allowed to flow, penetrates the current transformer 1 is inserted through a through hole 4 provided at the substrate 3 to the rear surface of the substrate 3. The tip end of a lead part 6a of a terminal stage 5a of the substrate 3 which protrudes above the rear surface of the substrate 3 is provided with a recessed part 6b into which the conductor part 7 is pressed, and then the conductor part 7 is pressed into the recessed part 6b for soldering.</p> |
