How do you read transformer labels?
Understanding how to read food labels might benefit you by allowing you to get a better idea of what you are putting into your body, and whaat nutrition you can actually get from the packaged foods you consume. This is especially useful if you are unsure as to what an actual portion size of something is.
A voltage transformer (known as a 'potential transformer' in North America) is classed as an instrument transformer. It is used to reduce the voltage across a high-voltage load to a value that can be read (usually remotely) by an ordinary a.c. voltmeter, while electrically isolating that voltmeter from the high-voltage system for the purpose of safety. It can also be used to supply an input to a protection relay.