Featured post

Estimation of Energy Storage Requirement by 2032

Energy storage requirement for Solar PV connected to grid In this post, energy storage requirement in India by 2032 is given here. The ESS r...

05/05/2017

Mounting of SCR

  • When the current passes through SCR is greater than the rated value, the thermal stress produced in it which generates mechanical force. 
  • If this mechanical force does not control, the SCR may damaged. 
  • The protection of the SCR in such a condition is done by proper mounting of it. The mounting method depends upon the rating of the SCR.
Lead mounting
  • This method is used when load current is of small value. 
  • The SCR does not require cooling device or heat sink in this method because most of the heat is dissipated by radiation and convection.
Bolt mounting
  • There is one hole is provided in the SCR. 
  • The heat sink and SCR are joined by the bolt. 
  • The mica or fibre insulation is kept in between the heat sink and SCR. This type of mounting is used in the small and medium rating SCR.
Stud Mounting
  • There are two molybdenum plates kept on both sides of SCR
  • The anode is soldered with aluminium resulting one stud is created. The SCR is joined to heat sink by this stud. 
  • If there is not necessary electrical isolation, mica or fibre type washers are used. 
  • The conduction of heat is done easily though mica or fibre type washers. It will also works as electrical insulator.


mounting-of-scr.png

No comments:

Post a Comment