Steam-based heating processes use latent heat and transfer it to a given product. When the work is done (i.e. steam has given up its latent heat), steam condenses and becomes condensate. In other words, condensate does not have the ability to do the work that steam does.
Subtransmission is part of an electric power transmission system that runs at relatively lower voltages. It is uneconomical to connect all distribution substations to the high main transmission voltage, because the equipment is larger and more expensive.
Why is it known as a âsubstation? Normally stations are where we catch trains and where people get on and off. By the same analogy we can explain what a substation does. Electricity has to be transmitted over large distances as the place where the power is being generated and the place where it is consumed can be far apart. The electricity is transmitted at very high voltages and low currents to reduce the heat, eddy currents, and other transmission losses.