In high tension terminals there are many components to prevent damage of the system or serious injuries on human. One of these components are toroidal tanks. These are used to store insulating oil in the terminals. Quality of these is as important as any other part of the terminal. They are needed to be clean and tested before using. One of our customers from Italy uses UniPi to do exactly such task.
UniPi is a controller for the toroidal tank cleaner and stress test machine. This machine uses oil and air which runs under high pressure into toroidal tanks to perform necessary cleaning and stress testing.
UniPi controls a power inverter powering motor-pump with a 4KW, two valves to control oil flow and one that controls the airflow. It also reads values of pressure in the tank via pressure transducer.
Raspberry Pi is connected to the network and after each testing and cleaning it writes a report and uploads it to the company’s server. The software RPi’s running does not have GUI. Instead it has a simple control panel with buttons. See the control panel below.