배선용 차단기 순시 가조정 트립부 개발에 관한 연구

Researchs for the Development of MCCB adjustable Instant Trip Unit

  • 발행 : 1999.07.19

초록

Through the Standard of MCCB, the Adjustable Type Instant Trip Unit should NO trip at -20% of each current from $5{\times}In$ to $10{\times}In$ and trip +20% of those. In this paper, we obtain the attraction force between Fixing Magnet and Moving Armature. So we first made some samples. do experiments of weight, and simulated the modelling by 3D Maxwell S/W. With values of experiment and simulated values, we do design instant trip springs by using the ADAMS S/W of kinematic simulation. Finally we product the 250A Adjustable Instant Trip Unit, and it is very useful to our customers.

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