地震防災用リレーの真実接触表面の動作回数による劣化の研究

摘要

In this study, the earthquake disaster prevention relay was used, seismic acceleration (972gal) at the Hanshin-Awaji Earthquake level was dealt, and the deterioration process on the surface of the contacts was measured. The surface roughness as the shake frequency rise to increase in the surface of the contacts. It has been understood that the increase of the surface roughness has a big damage on the plating layer on the surface of contact by it, and shortens the contact longevity. The present study examined the mechanism to which the loose contact (sensor defect) occurred because of the oscillatory phenomenon of contacts for a long time.%本研究では，地震防災用リレーを用い阪神・淡路大震災程度の振動加速度（972gal）を加え，接点表面の劣化過程を測定した.接点表面は，振動回数の増大に伴って表面あらさが増大することがわかった.表面あら　さの増大は，接触表面のめっき層に大きな影響を与え，接点寿命を短くすることがわかった.本研究は，現在市販されている接点の長時間の振動現象によって接触不良（センサ不良）が起きるメカニズムの一端を検討した.