Please solve this SCR Current rating confusion!

[Sanjay kumar]

If SCR has 9000amps at 50hz non-repetitive current rating.
What will be it's non-repetitive current rating for 35uS ??

Or Can we use this SCR for 3600amps / uS for 35uS ?

 

[DPG]

I don't know the answer to this, but I'm intrigued to know the application you are using it in.

 

[Wilko]

It depends on what duration the 9kA rating was for. Often the Manufacturer will specify the maximum non repetitive rating for 1/2 cycle at mains frequency. The overload rating for a full cycle duration would be less, but it’s up to Manufacturer to specify.

 

[marconi]

The OP is charging the capacitor to 1kV. He is young and has no electrical qualifications. Mmmm...........

I will not be helping him.

 

[DPG]

The OP is charging the capacitor to 1kV. Mmmm...........

I'm hoping he is considering the safety aspect.