Posted by: kellermax | January 30, 2009

Lab work

As you already know, I am working on a thesis concerning self-blast circuit-breakers.

Hopefully, the lab-and-testing part of the thesis now lies behind me. I have acquired quite a lot of data and what I have to do now is to find out what this data can tell us about the processes in a self-blast circuit-breaker at current zero.

After the mobile phone disaster the rest of the testing went quite well.  The last part was a bit more strenuous because I changed the insulation gas from CO2 to SF6. SF6 is a gas with very good insulation properties but also a greenhouse gas (22000 times the global warming potential of CO2) and the chemical byproducts produced when it is exposed to arcs are somewhat unhealthy. Therefore it needs to be handled with care. For the climatic part there is a filter and a tank so the gas can be reused several times. For the health part, we use this:

dsc00038

Looks good, isn’t it?

It’s rather cool to work with dangerous stuff. Makes work more thrilling. And it kind of compensates for the uncoolness of a lab in the basement which nobody (except the people who need and use it) ever enters.

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

Categories

%d bloggers like this: