Impulse voltage generator is a device used to generate lightning impulse

In the high-voltage technique, the individual unipolar voltage pulse is called impulse voltage. Surge voltage variation with time and duration depends on its generated. Impulse voltage generator is a kind of  Voltage stabilizer  to generate lightning impulse. circuit breakers line will be on the line lightning caused a sharp rise in voltage and generates a flow wave propagation along the way, it is possible to damage the insulation of  mcb circuit breaker  systems. This over-voltage amplitude level, up to several million volts. Lightning over-voltage characteristics of the wave front rise time is short, from about a fraction of the tens of microseconds, and then slow down to zero.