Energy
How Do Substations Work?
Untangling the various equipment you might see in an electrical substation.
This is a very interesting video. Substations do a lot more then just stepping down the voltage from high-voltage transmission lines. They carefully control the output voltage and frequency, bring together often multiple power lines feeding into the system, they can disconnect and connect lines for servicing and repair. In many ways, substations really are the brains of the local power grid.
Refrigerants How they work in HVAC systems
In this video we will be learning how refrigerants work in HVAC systems such as refrigerators, air and water cooled chillers as well as split a/c units. The refrigerant removes heat from the building and transfers it into the ambient outside air to produce air conditioning.
Using the 25kv Loadbuster
How line workers break a transformer connection safely without a lot of arching.