Withstand voltage testers are devices used to test the ability of electrical insulation to withstand high voltage without breaking down, ensuring the safety and reliability of electrical systems. They are used in applications such as product testing, quality control, and safety inspections, providing accurate and reliable voltage withstand testing. Withstand voltage testers offer features such as programmable test voltage, high precision, and safety interlocks, making them essential for verifying the dielectric strength of electrical insulation. Their ability to provide reliable high voltage testing makes them valuable for ensuring the safety and performance of electrical components and systems.