Dr. Kesorn Pechrach Weaver: Arc Control in Circuit Breakers: Anode and Cathode root in Circuit Breakers

Dr. Kesorn Pechrach Weaver: Arc Control in Circuit Breakers: Anode and Cathode root in Circuit Breakers: Anode and Cathode root in Circuit Breakers The anode and cathode root displacement are shown in Figure 4.21. The results show that when...

Anode and Cathode root in Circuit Breakers

Anode and Cathode root in Circuit Breakers

The anode and cathode root displacement are shown in Figure 4.21. The results show
that when the pressure starts to rise up, both anode and cathode root still stay in the
contact region. At the period of 1800 μs, the second pressure rises up.
This is coincident with the point that the cathode root moves off from the fixed
contact. When the anode root moves from the contact region at the period of 2600 μs,
the pressure drops down shapely.
At contact opening velocity of 10 m/s (see Figure 4.16), the pressure rises earlier than
that of 1 m/s. The maximum pressure when the contact opening velocity of 1 m/s is
double that of 10 m/s. The arc root contact time at contact opening velocity of 1 m/s
is longer than that of 10 m/s. The period the arc root is in the arc chamber at contact
opening velocity of 1 m/s is shorter than that of 10 m/s.

Reference:

Arc Control in Circuit Breakers: Low Contact Velocity Paperback – 1 Jan 2017 by Dr Kesorn Pechrach PhD (Author)

Dr. Kesorn Pechrach Weaver: Arc Control in Circuit Breakers: The Energy and Mass of Ag/C and Cu in Protection d...

Dr. Kesorn Pechrach Weaver: Arc Control in Circuit Breakers: The Energy and Mass of Ag/C and Cu in Protection d...: The Energy and Mass of Ag/C and Cu in Protection devices The Ag/C step   contact material   shows the maximum electron energy  ...

The Energy and Mass of Ag/C and Cu in Protection devices

The Energy and Mass of Ag/C and Cu in Protection devices

The Ag/C step contact material shows the maximum electron energy less than the Cu Punch contact material. However, there is only one chemical element, O II appears in both Ag/C step and Cu Punch contact material. Both contact Material Ag/C step and Cu punch have the same lowest energy at the wavelength 821 nm for chemical elements N I, O I and O II.

The Mass of the chemical elements Ag I and Cu II is higher than other chemical elements about 4 times in the Ag/C step contact material. The maximum Mass when using the Cu Punch contact material is the chemical element Cu II at the wavelength 776 nm. This confirms that the chemical element Ag I and Cu II come from the contact material. Both the Ag/C step contact material  and Cu Punch contact material show the minimum Mass is the chemical element H. The average Mass of Ag/C contact material is 0.026g higher than Cu Punch contact material.

The highest temperature rise of Ag/C step contact material belongs to chemical element N III at the wavelength 500 nm. The maximum temperature rise for the Cu punch contact material is the chemical elements NII at the wavelength 428 nm.  The maximum temperature rise for the Cu punch contact material is higher than the Ag/C step contact material. Both Ag/C step contact material and Cu Punch contact material have the same minimum temperature rise and the same chemical element Cu II, at the wavelength 776 nm. The average temperature rise for the Ag/C contact material is lower than the Cu Punch contact material about 0.25x10^-33 K. 

Reference:  Arc Control in Circuit Breakers: Low Contact Velocity Paperback – January 1, 2017 by Dr Kesorn Pechrach PhD (Author)

Dr. Kesorn Pechrach Weaver: Arc Control in Circuit Breakers: Chemical Elements in Short Circuit Breakers

Dr. Kesorn Pechrach Weaver: Arc Control in Circuit Breakers: Chemical Elements in Short Circuit Breakers: Chemical Elements in Short Circuit Breakers The maximum energy when contact opening velocity at 10 m/s is higher than the contact ...

Chemical Elements in Short Circuit Breakers

Chemical Elements in Short Circuit Breakers

The maximum energy when contact opening velocity at 10 m/s is higher than the
contact opening velocity 1 m/s. However, they have the same minimum energy and
the same chemical element N I, O I and O II. The average energy when the contact
opening velocity 10 m/s is slightly higher than the contact opening velocity 1m/s.
Both contact opening velocity of 1 m/s and 10 m/s has the same minimum and
maximum Mass. The maximum Mass, when the contact opening velocity 10 and 1
m/s is the chemical element Ag I. The minimum Mass is the chemical element H. The
Mass average when the contact opening velocity 10 m/s is 0.003g higher than the
contact opening velocity 1 m/s.
The maximum temperature rise when the contact opening velocity 10 m/s, the
chemical element N II, is higher than the contact opening velocity 1m/s the chemical
element N V. The minimum temperature rise of the contact opening velocity 10 m/s,
is the chemical element Cu II, is not significantly different from the minimum
temperature rise of the contact opening velocity 1 m/s.

Reference:  Arc Control in Circuit Breakers: Low Contact Velocity Paperback – January 1, 2017 by Dr Kesorn Pechrach PhD (Author)