Today I learned more about the picture that I posted in the last entry. The cables there are the one that you always see connected along the electric poles or "tiang letrik". There are five cables with the same sizes connected together with IPCs in a closed loop. Wait what? then how the current goes in? Good question. Noticed the big black box in that previous post? It's a transformer. The EMF in the windings generates current flow in the loop, refer to Faraday's Law. Of course, there are always resistances. A simple diagram on how it works:
Heat sensors are then attached to a point on each cable to measure their temperatures. The readings are displayed in a data logger where the technicians will record the readings for every 30 minutes. This is where the technicians have to be 24/7:
The white box is the data logger displaying the temperatures, the pen and datasheets for recording purpose, the multimeter to make sure of the current value, and many more, heh. The transformer is powered by this ugh, I forgot the name:
What are they doing here is basically creating an accelerated aging process to the cable connectors by stressing and unstressing them with high current every 30 minutes to test for their endurance. Each connectors will undergo at most 200 hours of this or until it fails. From the datas, the researchers study on what to do to make the cables last longer. This test is actually just a part of 5 tests in this particular research. More on them in the next posts.
No comments:
Post a Comment