• Title/Summary/Keyword: multi-contact connector

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Estimation of Heat Generation in Multi-Contact Connector for Superconducting Magnet Application (초전도자석 시스템 응용을 위한 멀티-컨텍 커넥터의 열 발생 특성 평가)

  • Kim, M.S.;Choi, Y.S.;Kim, D.L.;Lee, Y.A.
    • Progress in Superconductivity
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    • v.14 no.2
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    • pp.122-127
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    • 2012
  • Current leads are one of the important components for carrying the current to the coil in the superconducting magnet system. Heat leakage through the current lead is the major factor of entire heat load in the cryogenic system because current leads carry the current from room temperature to near 4 K, connecting thermally each other. Therefore, minimization heat load through current lead can reduce the operating temperature of superconducting magnet. The semi-retractable current lead, composed of multi-contact connector and HTS element, is one of good options. Comprehension of Multi-contact connector's structure, contact resistance and heat generation is essential for estimating heat generation in current leads. Multi-contact connector has several louvers inside of socket and the shape, number, size of louvers are different with the size of connector. Therefore contact area, current path and contact resistance are also different. In this study, the contact resistance in multi-contact connector is measured using the electrical power as a function of connector's size and temperature. Also, the unique correlation of electrical contact resistance is derived and heat generation is estimated for superconducting magnet application.

Quality Improvement for Crimping Process of Electrical Connector Using FEM Analysis (유한요소해석을 통한 전기 커넥터의 압착 품질 향상)

  • Yin, Z.H.;Park, J.G.;Choi, H.S.;Kim, Y.S.
    • Transactions of Materials Processing
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    • v.18 no.3
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    • pp.229-235
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    • 2009
  • This paper covers finite element simulations to evaluate the terminal crimping process of automobile electrical connector. Crimping is a classical technology process to ensure the electrical and the mechanical link between a wire and a terminal. Numerical modeling of the process is helpful to choose and to optimize the dimensions of the crimping part of the connector. In this paper, we discuss a 2D simulation of the crimping process, using explicit finite element methods (ABAQUS/Explicit) and we compare the results with experimental data from the industrial process of crimping (crimping height, crimping width and compressibility). The explicit method is preferred for the modeling of multi-contact problems, in spite of the quasi-static process of crimping. As compared with CAE analysis, a performance improvement makes certain of the truth of the matter.

A Study on the Variation of Electric Contact Resistance Due to Change in Contact Force in a Tin-plated Connector (주석 도금한 커넥터의 접촉 하중의 변화에 의한 전기 접촉저항 변화에 관한 연구)

  • Yu, Hwan-Shin;Oh, Man-Jin;Park, Hyung-Bae
    • Journal of Advanced Navigation Technology
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    • v.18 no.4
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    • pp.381-386
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    • 2014
  • In order to investigate the effect of contact load, which is one of the fretting corrosion factors affecting the electric connector, a coupled fretting corrosion specimens were prepared using a tin-plated brass coupon with a thickness of $3{\mu}m$. Electric resistance of the contact was measured during the fretting corrosion test period. There was increase in resistance with fretting cycles. The change in resistance can be classified by 3 stages. The first stage exhibited low and stable resistance. Second stage showed steady increment of the resistance and third stage showed very high and intermittent resistance. The relationship between the failure cycle (Nf) and contact force (P) can be drawn as; It is possible to draw the prediction equation for the failure cycle of the electric connector corresponding to the very high and intermittent resistance under various environment conditions through the fretting tests under various conditions such as load, displacement, temperature.

Performance and Design of Cable Termination for 154kV Class (154kV 케이블 콘넥터의 설계와 특성 평가 연구)

  • Cho, Han-Goo;Kim, Kyang-Young;Lee, Cheol-Ho;Lee, Yong-Sun
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2010.06a
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    • pp.112-112
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    • 2010
  • The purpose of development is to localize a connector for connection of cable and GIS for underground transmission system. The cable connector for GIS provides electrical insulation of GIS housing part and makes connection of ultra high voltage electrical apparatus and power cable by controlling electrical stress between electrodes of power cable termination. Generally Korean switchgear makers are using a connector for GIS made by foreign companies. We manufactured sample by best structure design of great capacity conductor connecting part and then modified the design by analysis of shape and section. We completed the suitable sample for current cycling test condition of conductor connecting part sample and ensured surge characteristics of line by short-time current test.

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A Study on the Mechanism of Rotational Stage with Multi Degree of Freedom for Multi-Channel Optical Alignment System (다채널 광정렬 장치에서의 다자유도 회전 스테이지 동작 특성에 관한 연구)

  • 정상화;차경래;최석봉;김광호;박준호;이경형
    • Proceedings of the Korean Society of Machine Tool Engineers Conference
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    • 2004.04a
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    • pp.219-224
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    • 2004
  • In recent years, as the demands of VBNS(Very high speed Backbone Network Service) and VDSL(Very high-data rate Digital Subscriber Line) increase, the development of kernel parts of optical communication such as PLC(Planar Light Circuit), Coupler, WDM elements increase. The alignment and the attachment technology are very important to fabricate the optical elements for communication. In this paper, the mechanism of rotational stage, the contact sensing unit, and integrated control circuit for the optical alignment system are studied.

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Shape Design of FPCB Connector to Improve Assembly Performance (체결 성능 향상을 위한 FPCB 커넥터의 형상설계)

  • Kim, Dae-Young;Park, Hyung-Seo;Kim, Woong-Kyeom;Pyo, Chang-Ryul;Kim, Heon-Young
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.36 no.3
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    • pp.347-353
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    • 2012
  • Recently, multi-functionalization (as in smart phones) has been in demand, and the connectors connecting the electrical signals of each board in a cellular phone have become key components. The miniaturization of these connectors is required to achieve a finer pitch design and enhance the electrical signal transfer capacity. However, the miniaturization of connectors reduces the structural safety, and a finer pitch design may cause contact problems under external impact. In this paper, a preliminary design for miniaturized, finer-pitch connectors is suggested for a product with 50 pins and a thickness of 0.2 mm. The assembly process of the FPCB (Flexible Printed Circuit Board) and connector was simulated to ensure the holding force between the two components and avoid overstressing. The design optimization process was performed with the Taguchi method. Fatigue analysis was also conducted to predict the fatigue life of the terminal, and the theoretical and experimental results were compared.