Dr. Kesorn Pechrach Weaver: Arc Control in Circuit Breakers: Short circuit current at 500A

Dr. Kesorn Pechrach Weaver: Arc Control in Circuit Breakers: Short circuit current at 500A: Short circuit current at 500A For short circuit current level 500A, both anode and cathode root contact delay longer in the contact reg...

Short circuit current at 500A

Short circuit current at 500A

For short circuit current level 500A, both
anode and cathode root contact delay longer in the contact region before it moves
slowly off from the contact region towards into the arc chamber. At the short circuit
current level 2000A, the arc root moves from the contact region faster than that of
1400A and 500A.

Ref: Slow Contact Opening Circuit Breakers

 

Dr. Kesorn Pechrach Weaver: Arc Control in Circuit Breakers: Electron energy when using Ag/C step contact mater...

Dr. Kesorn Pechrach Weaver: Arc Control in Circuit Breakers: Electron energy when using Ag/C step contact mater...: Electron energy when using Ag/C step contact material The relationship between electron energy and chemical elements when using Ag/C...

Electron energy when using Ag/C step contact material

Electron energy when using Ag/C step contact material

The relationship between electron energy and chemical elements
when using Ag/C step contact material. There are 25 chemical elements when using
Ag/C step contact material. At the wavelength 500 nm, it shows the maximum
electron energy at 3.98x10-37 J from the chemical elements O II, O, IV, Ti VIII, Al
IV and N III.
The average energy for all chemical elements when using the Ag/C step contact
material is about 3.14x10-37 J. The lowest energy is at the wavelength 821 nm for
chemical elements N I, O I and O II about 2.42x10-37 J.

Ref: Arc Control in Circuit Breakers: Low Contact Velocity