Experimental study on arc ablation occurring in a contact strip rubbing against a contact wire with electrical current

Abstract A series of tests on arc discharge were carried out to better understand the wear mechanism of a contact strip rubbing against a contact wire with electrical current. The arc discharge process was recorded with a high-speed camera. The arc voltage drop and electric current were measured throughout the test. The accumulated arc discharge energy was evaluated. Experimental results show that the wear rate of the contact strip is approximately directly proportional to the accumulated arc discharge energy in logarithmic coordinates. Increasing the normal force can suppress arc discharge and decrease wear of the contact strip.

[1]  Dierk Bormann,et al.  DC components in pantograph arcing: mechanisms and influence of various parameters , 2007, 2007 18th International Zurich Symposium on Electromagnetic Compatibility.

[2]  Gary Barber,et al.  Friction and wear in high speed sliding with and without electrical current , 2001 .

[3]  J Frene,et al.  Analysis of surface and subsurface of sliding electrical contact steel/steel in magnetic field , 2001 .

[4]  J. Frene,et al.  Damage of surfaces in sliding electrical contact copper/steel , 1999 .

[5]  R. Manory,et al.  A novel electrical contact material with improved self-lubrication for railway current collectors , 2001 .

[6]  Zhenhua Chen,et al.  Thermal wear and electrical sliding wear behaviors of the polyimide modified polymer-matrix pantograph contact strip , 2009 .

[7]  Giuseppe Bucca,et al.  Analysis of electrical interferences related to the current collection quality in pantograph–catenary interaction , 2011 .

[8]  R. Manory,et al.  Wear of railway contact wires against current collector materials , 1998 .

[9]  Chen Guangxiong,et al.  Effect of temperature and arc discharge on friction and wear behaviours of carbon strip/copper contact wire in pantograph–catenary systems , 2011 .

[10]  Amilton Sinatora,et al.  Failure analysis of a railway copper contact strip , 2004 .

[11]  M. Mansori,et al.  Lubrication mechanisms of a sliding contact by simultaneous action of electric current and magnetic field , 1999 .

[12]  Ping Liu,et al.  Sliding wear behavior of copper alloy contact wire against copper-based strip for high-speed electrified railways , 2007 .

[13]  Shunichi Kubo,et al.  Effect of arc discharge on wear rate of Cu-impregnated carbon strip in unlubricated sliding against Cu trolley under electric current , 1998 .

[14]  S. Chekroud,et al.  Influence of the electrical sliding speed on friction and wear processes in an electrical contact copper–stainless steel , 2004 .

[15]  R. Thottappillil,et al.  Understanding pantograph arcing in electrified railways - influence of various parameters , 2008, 2008 IEEE International Symposium on Electromagnetic Compatibility.

[16]  L. Qiao,et al.  Effect of surface film on sliding friction and wear of copper-impregnated metallized carbon against a Cu–Cr–Zr alloy , 2012 .

[17]  J. W. Kannel,et al.  Thermomechanical effects in high current density electrical slip rings , 1982 .

[18]  Jean Frene,et al.  Wear mechanism in graphite–copper electrical sliding contact , 1999 .

[19]  W. Sawyer,et al.  Low wear metal sliding electrical contacts at high current density , 2012 .

[20]  A. Collina,et al.  A procedure for the wear prediction of collector strip and contact wire in pantograph–catenary system , 2009 .

[21]  Ping Liu,et al.  Electrical sliding friction and wear behavior of Cu-Nb in situ composites , 1994 .

[22]  M. D. Bryant,et al.  Thermal mounding in high speed dry sliders: experiment, theory and comparison , 1995 .

[23]  Shunichi Kubo,et al.  Effect of arc discharge on the wear rate and wear mode transition of a copper-impregnated metallized carbon contact strip sliding against a copper disk , 1999 .