The lightning impulse voltage generator is mainly used to simulate lightning overvoltage in laboratory environments and conduct strict inspections on high-voltage electrical equipment. Its core purposes can be summarized into the following four aspects:

1. The "touchstone" of equipment insulation strength

This is its most core mission. By applying standardized lightning impulse voltage (such as 1.2/50 μ s waves) to power transformers, high-voltage cables, insulators and other equipment, the main insulation and longitudinal insulation (such as transformer turn to turn insulation) can withstand this extreme voltage test, ensuring that they will not be damaged under real lightning strikes.

2. "Physical examination officer" before the new equipment is put into operation

Any new high-voltage equipment must pass this test before design finalization (type test) and before leaving the factory (factory test). It can effectively expose insulation defects in product design, materials, or manufacturing processes, and is the first line of defense to ensure the safe operation of the power system.

3. The "ruler" for protecting equipment

Used to test key performance parameters of lightning arresters (surge protectors), such as residual voltage. By simulating lightning current surge, the protection level of the lightning arrester can be calibrated to ensure that it can reliably protect other equipment.

4. Important tools for scientific research and teaching

In research, it is used to study the breakdown characteristics of various insulation materials under transient high voltage; In teaching, it is an important experimental device that helps students intuitively understand high voltage phenomena and insulation coordination principles.

In summary, it is an essential key equipment for ensuring the safety of the power grid, ensuring the quality of power equipment, and conducting research on high-voltage technology.