Dr Kesorn PechrachWeaver: 37 Smart Ways Life Journeys : The effect of contact gap

Dr Kesorn PechrachWeaver: 37 Smart Ways Life Journeys : The effect of contact gap: The effect of contact gap The arc starts to move off from the contact region when the contact gap is less than previously thought [35...

The effect of contact gap

The effect of contact gap

The arc starts to move off from the contact region
when the contact gap is less than previously
thought [35].

The arc current is dependant on the
contact opening velocity. The anode root velocity on
the moving contact is more than the cathode root on
the fixed contact. The total mass flow decreases as
the contact opening velocity is increased. There are
more electronegative elements more at high contact
opening velocities than at lower velocities.

This research suggests that low contact velocity
MCBs can gain the same performance of the arc root
motion from the contact region as fast contact
opening. It also makes the use of smart material
actuation possible in these devices.

Reference:

-Ronsek Ltd
-Pechrach Publishing
Slow Contact Opening Circuit Breakers

How to transform a disadvantage into an advantage

How to transform a disadvantage into an advantage:

Think about things you want to do but you could
not make happen or the result was not as you
expected. For example, I have never got any job
offers, although I have attended a number of
interviews.
Think about 5 good things you get from the
disappointment of not getting a job.

5 Good things are:
1. I have time for family, teaching my kid,
looking after my husband and decorating my
house.
2. I have the chance to learn new skills such as
cake baking and cake decoration.
3. I have time to write books and publish them,
selling them worldwide.
4. I have time to stop and think about what is
happening in my life and I have time to plan
for the future.
5. I have time for a break and to practice
meditation.

Ref: 37 Smart Ways: Life Journeys