International standard units of measurement are generally lowercase. It is only used in units named after names, such as volt V, ampere A, Kelvin K, watt W, etc. In order to show respect for the predecessors of scientists, capital letters are used. The rest of the units that are not named after people are generally in lower case. Here’s why V is capitalized.
Secondly, for quantifiers, the initial magnitude is generally lowercase. If the letters are the same, uppercase and lowercase letters often distinguish different orders of magnitude, such as mΩ and MΩ. Lowercase m means 1×10^-3; and uppercase M means 1×10^6. So k here represents 1×10^3 and should be lowercase. (Perhaps this lowercase k is to distinguish it from K (Kelvin)) In summary, it can be found that kV should be lowercase k and uppercase V.
In fact, everyone can understand it if it is written in all capital letters, but from an academic point of view, this is the case in the national standards, and we need to write according to the standards.
Senior electric power scientist
▲Volt V
Alessandro Volta, a famous Italian physicist, is famous for his invention of the “voltaic pile” in 1800. Volta died on March 5, 1827, at the age of 82. In order to commemorate him, people named the electromotive force unit volt.
▲Ampere A
André Marie Ampere, a famous French physicist, chemist and mathematician. Ampere made outstanding achievements in the study of electromagnetic effects from 1820 to 1827, and was known as the “Newton of electricity.” In order to commemorate him, the international unit of electric current is named after his surname.
▲Watt W
James Watt, British inventor, important figure in the first industrial revolution. In 1776, the first practical steam engine was built. Later, after a series of major improvements, it became a “universal prime mover” and was widely used in industry. He opened up a new era of energy utilization for mankind and brought mankind into the “steam age”. In order to commemorate this great inventor, later generations set the unit of power as “Watt” (abbreviated as “Watt”, symbol W).
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