What does the abbreviation 'kV' signify?

The abbreviation 'kV' stands for kilovolt, which is a measurement of electrical voltage. One kilovolt is equal to 1,000 volts. Understanding this unit is crucial in electrical engineering as it helps to quantify and categorize the voltage levels used in various electrical systems. Voltage is a key component in circuit design and analysis, influencing factors such as current flow, power transfer, and safety measures in electrical installations.

The other options provided do not accurately define 'kV'. While voltage is indeed a critical concept in power and insulation metrics, the term itself specifically refers to the measure of electrical voltage rather than power or insulation.