Paul Herrick wrote: > > -- [ From: Paul Herrick * EMC.Ver #2.3 ] -- > > Does anyone have information on the use of Magnesium in ITE equipment. Under > some circumstances the metal Magnesium can burn. IEC950 gives rules only for > plastic parts. > > The actual application is for a casting to save weight. It is close to motors > enclosed in metal, cables, printed wiring boards with low power consumption. > No shock or energy hazard circuits. > > Thanks, > > Paul Herrick > Product Safety Engineer > JPH Consulting
Yes. I would look under the table for Electrochemical Potentials. You will find that Magnesium can only be used with Zinc or Zinc alloys or 80 tin/20 Zn on steel of Zn on Iron or stell for 0.05v and 0.55v respectively. Any other combination of dissimilar metals with Magnesium drives the electrochemical potential above the 0.6v barrier. Copper alloys for instance result in a 1.35v potential and I would not recommend it's use for safety ground in conjunction with Magnesium. ******************************************************* ------------------------------------------------------- The comments and opinions stated herein are mine alone, and do not reflect those of my employer. ------------------------------------------------------- *******************************************************
