Leiditech Voltage Sag Generator (model VDTE T50) complies with the requirements of standards IEC 61000-4-11/34 and GB/T 17626.11/34. The product's operation interface uses a 7.0-inch super large LCD touch screen, which can be flexibly programmed. The interface has a screen prompt function, making operation convenient and less error-prone; it supports multiple languages, convenient for different users; it has a built-in automatic environment detection program, which can automatically detect the test environment and remind users; it adopts programmable control technology, enabling the control system to achieve ultra-miniaturization and intelligent automatic control and measurement with high reliability; it has built-in international standard grade parameters, making operation convenient and fast; it is equipped with an RS232 interface, which can be controlled via PC; key components use high-quality imported devices, ensuring quality and stable and reliable output. It can be used to simulate voltage sag and other electrical interference scenarios, providing professional support for voltage immunity testing of electrical equipment.